C/2002 V1 (NEAT)

C/2002 V1 (NEAT)
Reported observations:
2003 Mar. 08.00 UT: m1=5.3, Dia.=3', DC=8 ... 10x50 B ... Mariano Ribas (Villa Gral. Belgrano, Córdoba, Argentina)[comet about 18° above SW horizon. Some clouds, but mostly clear. Naked eye comet, but the Tail=, 1,5°, is only observable with binoculars]
2003 Mar. 03.00 UT: m1=4.2, Dia.=4', DC=8/, Tail= 1.2 deg. in PA: 155 deg ... 7x50 B ... Luis Mansilla (Rosario, Argentina) [Out-Out Method. Comet in middle twilight]
2003 Mar. 02.41 UT: m1=4.4, Dia.=2', DC=8-9, Tail=~4 deg PA: 150 deg ... 10x50 B ... Terry Lovejoy (Jondaryne, Queensland) [Nice comet! Tail= and coma visible to the naked eye - although not conspiciously. In 16cm telescope a bright curved ribbon of Tail= extends from an intense coma. As a rough guess the Tail= alone would be about integrated mag. 3. In fact I could see the Tail= extending up from the horizon in 15 x 70 binoculars as the coma set]
2003 Mar. 01.97 UT: m1=3.7, Dia.=3', DC=8 ... 10x50 B ... Mariano Ribas (Planetario de Buenos Aires, Argentina) [comet about 10° above SW horizon. Some clouds, but mostly clear. Twilight. The coma is very concentrated, and I could hardly guess the Tail=]
2003 Feb. 28.40 UT: m1=3.5, Dia.=2', DC=8, Tail= 1 deg. in PA: 150 deg ... 15x80 B ... Glenn Dawes (Sydney, Australia) [Obs. from a suburban location. Magn. is somewhat of a guessimate using nearby 4.5 magn. Delta Scuptoris, out of focus, for comparison (with the local light pollution this May  be underestimated somewhat)]
2003 Feb. 26.99 UT: m1=4.3, Dia.=3", DC=8/, Tail= 0.6 deg. in PA: 153 deg ... 7x50 B  ...  Luis Mansilla (Rosario, Argentina) [Out-Out Method. The comet resembles a version of 2000 WM1]
2003 Feb. 26.99 UT: m1=4.3, Dia.=3", DC=8/, Tail= 0.6 deg. in PA: 153 deg ... 7x50 B  ...  Víctor Buso (Rosario, Argentina) [Out-Out Method. The comet resembles a version of 2000 WM1]
2003 Feb. 26.44 UT: m1=3.0:, Dia.=2', DC=8, Tail=>1.5 deg PA: 160 deg ... 7x50 B ... Michael Mattiazzo (Wallaroo, South Australia) [comet altitide 4 deg. Mag estimate corrected for atmospheric extinction. Twilight interference] 
2003 Feb. 26.40 UT: m1=3.0, Dia.=2', DC=8 ... 15x80 B ... Glenn Dawes (Sydney, Australia) [Difficult observation through scattered cloud at light polluted suburban location. Magn. is somewhat of a guessimate with nothing suitable for comparison (certainly fainter than nearby 1st magn. Formalhaut, out of focus)]
2003 Feb. 25.97 UT: m1=2.8, Dia.=5', DC=8 ... 90-mm R F/5.6 (19x) ... Mariano Ribas (Planetario de Buenos Aires, Argentina) [comet only 6° above SW horizon. Very clear sky, but still middle twilight. The coma is very concentrated and I could see just a hint of the Tail=]
2003 Feb. 24.97 UT: m1=2.3, Dia.=3', DC=8/, Tail= 0.2 deg. in PA: 160 deg ... 0.28-m SCT (50x) ... Luis Mansilla (Rosario, Argentina) [Magnitude difficult to estimate due to lack of comparison stars in the bright twilight]
2003 Feb. 24.97 UT: m1=2.3, Dia.=3', DC=8/, Tail= 0.2 deg. in PA: 160 deg ... 0.28-m SCT (50x) ... Víctor Buso (Rosario, Argentina) [Magnitude difficult to estimate due to lack of comparison stars in the bright twilight]
2003 Feb. 18.94 UT: m1=[-3 ... 12.7-cm SCT (49x) ... Charles S. Morris and Carmelita Miranda (Fillmore, CA) [Not positively seen. Tried for the comet in the daytime. Used C5 mounted on the 41cm SCT. Used The Sky to offset from the Sun. Very difficult with the Sun so close. Both observers had a possible object, but it was at the limit of vision. m1 was probably fainter than -3 as expected. Very difficult observation. Couldn't use the 41cm SCT because it was impossible to shield the telescope. Binocular search was negative]
2003 Feb. 16.29 UT: m1=-0.5:, Dia.=2', DC=9, Tail= 0.2 deg. in PA: 350 deg ... 11x80 B ... Juan Jose Gonzalez (Sierra del Aramo, alt.1240 m, Asturias, North Spain) [Mountain location, clear sky. Magnitude estimate corrected for atmospheric extinction with ICQ winter table. Very low altitude: 2 deg. solar elongation 8 deg. Mercury and the comet were clearly visible in the twilight, half an hour before sunrise]
2003 Feb. 14.72 UT: m1=1.5*, Dia.=1.5', DC=8, Tail= 0.2 deg in PA: 15 deg ... 12x50 B ... Bjorn H. Granslo (Nyland, Oslo, Norway) [Observed from my work location in strong twilight (Sun 8.5 deg. below horizon) at true altitude 2.5 deg. The comet was seen from 17h00m UT when it escaped a cloud layer and until it set 11 minutes later. It was a considerably more challenging object that previous evening, but still clearly visible in binoculars. The formal observation was made shortly before setting when both the comet and the comparison star Alpha Aqr (true alt. 4.1 deg) were visible. The comet appeared 0.6 mag. brighter than this star and its magnitude was corrected by -0.9 mag. for extinction by using an empirically determined extinction coefficient of 0.21 mag. per airmass. Despite these corrections the final magnitude should be fairly precise and correct to within +/- 0.3 mag. The limiting magnitude near comet was approx. +3.5 with 12x50 B, hence NEL = -1.0 (approx.)]
2003 Feb. 14.70 UT: m1=1.0:, Dia=<1´, DC=9, Tail= 0.3 deg. in PA: 15 deg ... 7x50 B ... Timo Karhula (Virsbo, Sweden) [Magnitude difficult to estimate due to lack of comparison stars in the bright twilight. The fainter alpha Aqr was the only visible star in the field. NEAT reminded of a "fuzzy" Mercury. Altitude 3.8 deg. 20x100 binocular showed a small,yellow disclike coma and a short Tail=. I could follow the comet for 21 minutes, until 17.00 UT when its altitude was 1.1 deg and it disappeared behind the distant tree-tops. Observed from latitude 60 deg N. Very clear weather. Comet´s elongation 12 deg.]
2003 Feb. 13.99 UT: m1=2.1, Dia.=1', DC=9, Tail= 0.4 deg in PA: 020 deg ... 16x80 B ... Phillip J. Creed (Massillon, OH) [Sun -9 deg alt. Comet seen at less than 3 deg above the horizon. Excellent transparency but brutally cold, never been so happy to end an observation of a 2nd-mag. comet in my life]
2003 Feb. 13.98 UT: m1=2.2, Dia.=2', DC=9, Tail= 0.75 deg ... 25x150 B ... Larry Shotter (Uniontown Pa.) [Dia. stated is for nucleus only, no coma visible,(bright sky washing coma out?). Nucleus appearance resembles disk of Mercury seen next morning, only a little larger and fainter. Beautiful sight in bright sky, easily watched comet set over distance horizon]
2003 Feb. 13.73 UT: m1=2.0, Dia.=2', DC=8, Tail= 0.9 deg. in PA: 23 deg ... 7x50 B ... Bjørn H. Granslo (Tryvann, Oslo, Norway) [Despite nautical twilight and true altitude of 3 degrees the comet and its Tail= was a very neat object and easily seen with 7x50 B. It was just not visible to the naked eye, indicating NEL= 1.8 near comet. With 7.0-cm f/6.8 R (24x): The coma appeared yellowish and showed an intense and apparently stellar central condensation of mag. 2.8, the western part of the Tail= was bright, curved and with a sharply defined boundary, several streamers were suspected within the Tail=. Observed under a clear and transparent sky from an elevation of 529 meters, but barely escaping a layer of low clouds. The comet was visible until a true altitude of -0.3 degrees! This was my first observation of this comet for two weeks due to unfavorable weather conditions]
2003 Feb. 13.69 UT: m1=1.8:, Dia.=3', DC=7/, Tail= 25' in PA: 17 deg ... 20x60 B ... Tomasz Sciezor (Krakow, Poland) [comet only 5 deg above horizon, very clear, but bright sky]
2003 Feb. 13.67 UT: m1=2.1, Dia.=--, DC=8, Tail= 0.8 deg. in PA: 30 deg ... 20x60 B ... Veikko Mäkelä (Helsinki, Finland) [comet at +4 deg, Sun at -9 deg, atmospheric extinction estimated]
2003 Feb. 13.00 UT: m1=2.5, Dia.=1', DC=9, Tail= 0.6 deg in PA: 030 deg ... 16x80 B ... Phillip J. Creed (Massillon, OH) [Sun -12 deg alt. Comet is VERY low but shows up surprisingly well given the conditions. The Tail= has remarkably high surface brightness]
2003 Feb. 13.00 UT: m1=2.0, Dia.=10', DC=9, Tail= 1.50 deg in PA: 030 deg ... 7.6-cm L f/4.95 (9.5X) ... Robert B Slobins (DeKalb County, IN) [Only the white dusty component visible, as the comet was within five degrees of the horizon. This Tail= spanned an angle of less than ten degrees. Magnitude is a rough estimate, despite the severe clear and clean sky, I could see none of the neighboring third magnitude stars in Pegasus and Aquarius at that altitude. Comet was just visible naked-eye in the twilight]
2003 Feb. 12.97 UT: m1=2.3, Dia.=2-3', DC=9, Tail= 0.3 deg in PA: 30 deg ... 15x70 B ... J. Bortle (Stormville, NY) [mag. corrected for extinction, bright twilight, comet's solar elong. less than 16-deg]
2003 Feb. 12.72 UT: m1=2.8, Dia.=3', DC=8, Tail= 0.5 deg ... 7x50 B ... Jure Zakrajsek (Nanos Mtn., Slovenia) [Comet easy object at +4 degrees, Sun at -12. Clear sky]
2003 Feb. 12.72 UT: m1=2.3*, Dia.=&5', DC=7/, Tail= 0.5 deg in PA: 45 deg ... 20x60 B ... Maciej Reszelski (Szamotuly, Poland) [Time of observation: 17:10 UT (Feb. 12.715 UT). Twilight. Comet appears slight fainter than Epsilon Pegasi. Tail= is still easy. It is possible last time when I see comet on evening twilight. I suspect that tomorrow comet will be 3 deg lower at the same time]
2003 Feb. 12.72 UT: m1=2.7, Dia.=2', DC=8, Tail= 0.8 deg ... 10x50 B ... Jure Atanackov (Nanos Mtn., Slovenia)[Comet at +4 degrees, Sun at -12. Clear sky with zenithal LM 5.8. In 20-cm f/10 SCT at 50x a round disk-like coma 1' in diameter with 10' Tail=]
2003 Feb. 12.72 UT: m1=2.6, Dia.=2', DC=8, Tail= 20' ... 7x50 B ... Javor Kac (Nanos Mtn., Slovenia) [Comet at +4 degrees, Sun at -12. Clear sky with zenithal LM 5.5.]
2003 Feb. 12.70 UT: m1=1.5, Dia.=5', DC=7, Tail= 1 deg. in PA: 40 deg ... 10x50 B ... Mieczyslaw L. Paradowski (Lublin, Poland) [Perfect weather conditions. Twilight, moonlight and city lights interfered]
2003 Feb. 12.69 UT: m1=2.4, Dia.=2', DC=8, Tail= 2 deg in PA: 30 deg ... 10x50 B ... Piotr Guzik (Krosno, Poland) [Faintly visible to the naked eye because of very small elongation - 16 deg. Corrected for extinction]
2003 Feb. 12.68 UT: m1=3.4, Dia.=4', DC=S8, Tail= 2 deg. in PA: 30 deg ... 20x60 B ... A. Baransky (Bucha, Ukraine) [Strong central condensation, parabolic Tail=]
2003 Feb. 12.52 UT: m1=2.6, Dia.=2' DC=6, Tail= 2 deg in PA: 35 deg ... 7x35 B ... David Harris (Hayward, Wisconsin, USA) [Comet 5 degrees high, Well defined Tail=, out-out method, -5 Deg F Cold Clear Moonlight Tough Conditions but well worth it]
2003 Feb. 11.80 UT: m1=3.6, Dia.=6', DC=8, Tail= 30' ... 11x80 B ... Carlos Labordena (Castellon, Spain) [I've corrected for atmospheric extinction]
2003 Feb. 11.73 UT: m1=3.2:, Dia.=4', DC=8, no tail ... 7x50 B ... Mario Fonti (Rome, Italy) [Comet only 8 degrees high, out-out method, not easy]
2003 Feb. 11.73 UT: m1=3.2, Dia.=3', DC=8, Tail= 1.5 deg ... 10x50 B ... Jure Atanackov (Krvavi potok, Slovenia) [Corrected for atmospheric extinction. Windy conditions. NELM5.5. also observed it in a 20-cm f/10 SCT. It appeared as a round disk like object of 2' diameter and about 0.5 degree Tail= at 50x power. Higher power not used as the telescope was shaken out of proper colimation during transport]
2003 Feb. 11.71 UT: m1=2.8, Dia.=2', DC=8, Tail= 0.5 deg ... 7x50 B ... Javor Kac (Krvavi potok, Slovenia) [Corrected for atmospheric extinction. Poor conditions due to haze near the horizon. NELM5.0]
2003 Feb. 11.68 UT: m1=3.6, Dia.=4', DC=S8, Tail= 3 deg. in PA: 33 deg ... 20x60 B ... A. Baransky (Bucha, Ukraine) [Strong central condensation, parabolic Tail=]
2003 Feb. 10.74 UT: m1=3.2, Dia.= 2', DC= 8/, Tail= 2.8 deg in PA: 40 deg ... 10x50 B ... Roberto Haver (Frasso Sabino, Italy) [Magnitude estimate corrected for atmospheric extinction. Moonlight and twilight. Probably seen to naked eye: magnitudo 3.0]
2003 Feb. 10.74 UT: m1=3.5, Dia.=10', DC=8, Tail=~1° deg ... 9x63 B ... Luca Basili (Ostia Lido, Roma, Italy) [magnitude could be understimated of about 0.3 mag. due to strong Light Pollution, Moonlight, and comet low altitude (~6°)]
2003 Feb. 10.73 UT: m1=3.5, Dia.=6', DC=8, Tail= 1.5 deg ... 7x50 B ... Jure Zakrajsek (Dolenja vas, Slovenia) [Comet at 7 degress, 62% moon interference, ZLM 6.0, Bobrovnikoff method used]
2003 Feb. 10.73 UT: m1=3.6, Dia.=4', DC=8, no tail ... 7x50 B ... Mario Fonti (Rome, Italy) [Clear sky, comet 10 degrees high, out-out method]
2003 Feb. 10.73 UT: m1=3.5, Dia.=4', DC=8, Tail= 1.5 deg ... 7x50 B ... Javor Kac (Dolenja vas, Slovenia) [Clear sky with zenithal LM 6.0, 62% Moon interference. Strong winds! Comet at 6 degrees altitude, comparison stars within 1 degree from the comet in altitude. Corrected for atmospheric extinction]
2003 Feb. 09.77 UT: m1=3.8, Dia.=5', DC=7, Tail= 1.5 deg. in PA: 50 deg ... 16x50 B ... Stephen McCann (Southampton, England)
2003 Feb. 09.73 UT: m1=3.4, Dia.=--, DC=8, Tail= 1 deg in PA: 40 deg ... 7x50 B ... Timo Karhula (Virsbo, Sweden) [The comet was faintly visible to the naked eye. The Tail= curved slightly to the E and the W border was sharper. Coma almost stellar and intense. NEAT was a neat.-) sight in a 20x100 binocular. Altitude 7 degrees. First quarter moon in the sky]
2003 Feb. 09.39 UT: m1=4.4, Dia.=~4', DC=8 ... 20x100 B ... Yoshimi Nagai (Yamanashi, Japan) [Used 10cm B, Because low altitude and twilight. Data from the Tycho catalog Johnson V magnitudes, and used correcting for atmospheric extinction. Tail= about 1 deg long in PA: 40]
2003 Feb. 09.00 UT: m1=3.9, Dia.=2', DC=8, Tail= 1.5 deg in PA: 045 deg ... 16x80 B ... Phillip J. Creed (Warsaw, OH) [Intense condensation. Almost 1 deg of Tail= visible 50 minutes after sundown. Clouds spoiled view 80 minutes after sunset (solar alt. -15 deg)]
2003 Feb. 08.80 UT: m1=4.2, DC=9 ... Naked Eye ... Juan Jose Gonzalez (North Spain) [Moonlight. Comet observed from comercial jet aircraft flying at an altitude of 8000 m over Valladolid]
2003 Feb. 08.79 UT: m1=4.4, Dia.=1,5', DC=9, Tail= 1 deg. in PA: 95 deg ... 7x50 B ... Federico Fdez. Pardavila (Iturrioz, Guipuzcoa, Spain) [some light pollution]
2003 Feb. 08.75 UT: m1=4.6, Dia.=4', DC=8, no tail ... 7x50 B ... Mario Fonti (Rome, Italy) [Cloudy with some clear sky breaks, and comet 8 degrees high, out-out method]
2003 Feb. 08.73 UT: m1=3.9, Dia.=10', DC=9, Ions Tail= 5 deg ... 7x50 B ... T. Scarmato (Calabria, Italy)
2003 Feb. 08.23 UT: m1=4.6, Dia.=4.0', DC=8, Tail= 2.5 deg in PA: 45 dg ... 10x50 B ... Mike Linnolt (Dillingham, HI) [Out-Out method. Tycho2+Bessell corr. Dark sky site but low altitude and zodiacal light/twilight. NELM~5.0 near comet. Very compact, brilliant coma with long but faint Tail= best seen by averted vision. Visible by naked eye, but just barely]
2003 Feb. 08.01 UT: m1=4.4, Dia.=3', DC=8, Tail= 1.0 deg in PA: 045 deg ... 16x80 B ... Phillip J. Creed (Spencer Lake, OH) [An observation stolen from the clutches of lake-effect clouds]
2003 Feb. 07.80 UT: m1=4.6, Dia.=5', DC=8, Tail= 3 deg in PA; 45 deg ... 7x50 B ... Juan Jose Gonzalez (Pico Fario - Siero, alt.670 m, Asturias, North Spain) [Moonlight. NELM=4.5 near comet]
2003 Feb. 07.79 UT: m1=4.3, Dia.=3', DC=8, Tail= 2 deg in PA: 41 deg ... 11x70 B ... Philippe Roux (Ploumilliau, France) [More condensed than two days ago, bright nucleus, the Tail= also seems brighter. m1 estimated by bobrovnikoff corrected from atmospheric extinction]
2003 Feb. 07.75 UT: m1=4.0, Dia.=--, DC=8, Ions Tail= 2 deg ... Naked Eye ... T. Scarmato (Calabria, Italy) [Very nice comet in 7x50B like to Ikeya-Zhang show a long Tail= about 5.5 degrees]
2003 Feb. 07.74 UT: m1=4.5, Dia.=5', DC=8 ... 20x80 B ... Sandro Baroni (Milan,Italy) [Moonlight and Twilight]
2003 Feb. 07.74 UT: m1=4.0, Dia.=3', DC=8, Tail= 4.2 deg in PA: 45 deg ... 10x50 B ... Roberto Haver (Frasso Sabino, Italy) [Magnitude estimate corrected for atmospheric extinction]
2003 Feb. 07.74 UT: m1=4.2, Dia.=5', DC=7, Tail= 2.0 deg ... 7x50 B ... Jure Zakrajsek (Urban pri Mariboru, Slovenia) [Comet at 10 degres, 34% moon interference, ZLM 5.5, comet seen with naked-eye, Bobrovnikoff method used]
2003 Feb. 07.73 UT: m1=4.5, Dia.=5', DC=8, Tail= 3.0 deg ... 7x50 B ... Javor Kac (Krizni vrh, Slovenia) [Corrected for atmospheric extinction. Comet at 12 degrees, 34% Moon interference. Zenithal LM 6.4.]
2003 Feb. 07.11 UT: m1=4.5, DC=8/ ... 10x50 B ... Charles S. Morris (Fillmore, CA) [The comet was distinctly brighter]
2003 Feb. 06.80 UT: ml=4.9, Dia.=6', DC=8, Tail= 1.5 deg in PA: 44 deg ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Feb. 06.78 UT: m1=5.0, Dia.=6', DC=8, Tail= 50' ... 8-cm B (11x) ... Carlos Labordena (Castellon, Spain)
2003 Feb. 06.76 UT: m1=4.5, Dia. 10', DC=7, Tail=~2.5° deg ... 9x63 B ... Luca Basili (Tolfa, Civitavecchia, Italy) [Comet altitude from horizon: 12°, Out-Out method, slight Light Pollution and Moonlight, low Humidity]
2003 Feb. 06.74 UT: m1=4.5, Dia.=4', DC=8/, Tail= 1.5 deg in PA: 45 deg ... 10x70B ... Fabio Zucconi (Lodi, Italy) [out out method, light pollution, sky very good]
2003 Feb. 06.74 UT: m1=4.3, Dia.=3', DC=8, Tail= 1.5 deg in PA: 48 deg ... 10x50 B ... Roberto Haver (Roma, Italy) [Magnitude estimate corrected for atmospheric extinction]
2003 Feb. 06.73 UT: m1=4.7, Dia.=5', DC=8, Tail= 1.5 deg ... 7x50 B ... Jure Zakrajsek (Urban pri Mariboru, Slovenia) [LM 6.0, comet seen with naked-eye, Bobrovnikoff method used. Corrected for atmospheric extinction]
2003 Feb. 06.73 UT: m1=4.8, Dia.=3', DC=8, Tail= 30' ... 7x50 B ... Javor Kac (Ljubljana, Slovenia) [Comet at 13 degrees. Estimate inaccurate because the observation was made in the city with hazy sky and zenithal LM 5.3]
2003 Feb. 06.40 UT: m1=4.8, Dia.=4', DC=8 ... 7x35 B ... Yoshimi Nagai (Yamanashi, Japan) [Tail= 2.5 deg long in PA: 45 deg.]
2003 Feb. 06.11 UT: m1=4.9, DC=8/, Tail= 4.5 deg ... 10x50 B ... Charles S. Morris (Fillmore, CA) [Moonlight starting to affect observed Tail=.]
2003 Feb. 06.01 UT: m1=4.8, Dia.=stellar, DC=9 ... Naked Eye ... Phillip J. Creed (Wilmot, OH) [Outstanding in 16x80B, with a 3' coma, intensely condensed, with 2.5-deg Tail= in PA 050. m1 estimate corrected for atmospheric extinction w/ICQ winter table]
2003 Feb. 05.80 UT  m1=4.7, Dia.= 15', DC=8, Tail= 1.2 deg. in PA: 80 deg ... 8x40 B ... Jose Carlos Millan (Estacion de VadoJaen, Martos,(Jaen), South Spain) [Observation poor due to moon´s position and cirrus] {Then why did you report your magnitude to 0.01 mag. accuracy? I rounded it off. csm}
2003 Feb. 05.78 UT: m1=5.1, Dia.=6.0', DC=9, Tail= 1 deg ... 7x50 B ... J. P. Navarro Pina (Astronomical Observatory of Los Molinos, Crevillente, Alicante, Spain)
2003 Feb. 05.78 UT: m1=4.6, Dia.=5', DC=8, Tail= 0.66 deg. in PA: 45 deg ... 11x70 B ... Philippe Roux (Ploumilliau,France) [Coma very condensed and bright nucleus. The Tail= is evident at the first look! m1 was estimated by Bobrovnikoff method and corrected from atmospheric extinction]
2003 Feb. 05.75 UT: m1=5.1, Dia.=6', DC=7, Tail= 30' PA: 52 deg ... 20x50 B ... A. Diepvens (Balen, Belgium)
2003 Feb. 05.74 UT: m1=4.8, Dia.=6' DC=8, Tail= 1 deg ... 7x50 B ... Javor Kac (Vrhnika, Slovenia) [Comet at 14 degrees. Very clear sky, zenithal LM 6.7.]
2003 Feb. 05.74 UT: m1=4.5, Dia.=3', DC=8/, Tail= 1 deg in PA: 44 deg ... 10x70B ... Fabio Zucconi (Lodi, Italy) [out out method, light pollution]
2003 Feb. 05.74 UT: m1=4.6, Dia.=7', DC=8 ... 20x80 B ... Sandro Baroni (Milan,Italy)
2003 Feb. 05.23 UT: m1=4.9, Dia.=5.0', DC=6, Tail= 1 deg in PA: 50 deg ... 10x50 B ... Mike Linnolt (Honolulu, HI) [Out-Out method. Tycho2+Bessell corr. Comet getting quite low and in worsening light pollution, NELM~3.5, adjusted for atmospheric extinction. Surprisingly, the Tail= is faintly visible even under the poor conditions]
2003 Feb. 04.84 UT: m1=5.0, Dia.=10', DC=8, Tail= 1 deg. in PA: 65 deg ... 10x50 B ... Francisco A. Rodriguez (Gran Canaria, Canary Islands) 
2003 Feb. 04.49 UT: m1=5.0, Dia.=6', DC=7, Tail= 2 deg in PA: 70 deg ... 70-mm refractor and 12x50 B ... Quanzhi Ye (Xiaoshan, Guangzhou, China) [a very beatiful object in the moonlight. Not very sure because the vapor]
2003 Feb. 04.11 UT: m1=5.0, DC=8/, Tail= 6 deg ... 10x50 B ... Charles S. Morris (Fillmore, CA)
2003 Feb. 04.05 UT: m1=5.2, Dia.=2', DC=8, Tail= 2.5 deg. in PA: 050 deg ... 11x80 B ... Paul Robinson (15km W. of Norman, OK, USA) [No light pollution. Coma very small but bright. Long narrow Tail=.]
2003 Feb. 03.80 UT: ml=5.0, Dia.=7', DC=7, Tail= 1.5 deg in PA: 48º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Feb. 03.76 UT: m1=5.3, Dia.=8', DC=7, Tail= 0.8 deg. in PA: 60 deg ... 16x50 B ... Stephen McCann (Southampton, England)
2003 Feb. 03.71 UT: m1=5.1, Dia.=3', DC=8, Tail= 1.1 deg in PA: 53 deg ... 7-cm R (25x) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Feb. 03.69 UT: m1=5.1, Dia.=4', DC=S8 ... 7x50 B ... A. Baransky (Kyiv, Ukraine) [Starlike coma in 7x50 B, it is appears more diffuse (DC=5) in 60-mm (40x) refractor]
2003 Feb. 03.11 UT: m1=5.1, DC=8/, Tail= 5 deg ... 10x50 B ... Charles S. Morris (Fillmore, CA)
2003 Feb. 02.85 UT: m1=5.7, Dia.=4', DC=7, Tail= 0.5 deg. in PA: 45 deg ... 10x70 B ... J. Carvajal (Madrid, Spain) [No changes since previous observation]
2002 Feb. 02.84 UT: m1=5.1, Dia.=15', DC=8, Tail= 1.5 deg. in PA: 65 deg ... 10x50 B ... Francisco A. Rodriguez (Gran Canaria, Canary Islands)
2003 Feb. 02.81 UT: m1=5.1, Dia.= 15', DC=7, Tail= 1 deg. in PA: 80 deg ... 8x40 B ... Jose Carlos Millan (Estacion de VadoJaen, Martos, Jaen, South Spain) [Method: B, Observation with MALE 5.9, although in the comet´s zone there was some light pollution]
2003 Feb. 02.80 UT: ml=5.2, Dia.=8', DC=7, Tail= 1 deg in PA: 50º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Feb. 02.80 UT: m1=5.1, Dia.=6', DC=8, Tail= 1.5 deg. in PA: 50 deg ... 7x50 B ... Juan Jose Gonzalez (Montejos del Camino, alt.950 m, Leon, North Spain) [Comet visible to naked eye: Feb. 02.81 UT: NE: m1=5.0, DC=9. Very clear sky. Observation made under better conditions and from a higher location than two days ago. Tail= appears brighter and longer in 7x50B. NELM=5.7 near comet]
2003 Feb. 02.78 UT: m1=5.0, Dia.=6.0', DC=9, Tail= 60' ... 7x50 B ... J. P. Navarro Pina (Astronomical Observatory of Los Molinos, Crevillente, Alicante, Spain)
2003 Feb. 02.75 UT: m1=5.4, Dia.=10', DC=7, Tail= 0.75 deg ... 9x63 B ... Luca Basili (Ostia Lido, Rome, Italy) [Comet altitude from horizon: 20°, Out-Out method, Light Pollution, Wind, very low Humidity.]
2003 Feb. 02.75 UT: m1=5.1, Dia.=6', DC=7, Tail= 1 deg in PA: 53 deg ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [In out method, light pollution]
2003 Feb. 02.74 UT: m1=4.7, Dia.=5', DC=8, Tail= 0.6 deg in PA: 54 deg ... 10x50 B ...  Roberto Haver (Roma, Italy)
2003 Feb. 02.74 UT: m1=5.2, Dia.=5.5', DC=8, Tail= 40' ... 7x50 B ... Javor Kac (Kostanjevec, Slovenia) [Zenithal LM 6.5]
2003 Feb. 02.72 UT: m1=5.0, Dia.=6', DC=8 ... Naked Eye ... 10x50 B ... Piotr Guzik (Krosno, Poland) [Easily seen with naked eye thanks to very good conditions. Zodiacal light interference. 2.73 UT: m1=5.1, Dia.=6', DC=7/, Tail= 3 deg in PA 55 deg ... 10x50B. Comet is very bright now with long quite bright Tail=. It has similar appearance to that of 153P/Ikeya-Zhang at the end of February 2002, during my first naked eye observation]
2003 Feb. 02.71 UT: m1=5.4, Dia.=5', DC=d6, Tail= 1 deg. in PA: 59 deg ... 20x60 B ... A. Baransky (Bucha, Kyiv region, Ukraine) [Strong central condensation, the head of comet is round, the parabolic Tail= is slightly bent in a direction counter-clockwise. By it's appearance the comet strongly reminds the Comet C/2002 C1 (Ikeya - Zhang) in March, 2002]
2003 Feb. 02.24 UT: m1=5.1, Dia.=3.5', DC=7, Tail= 1.2 deg in PA: 55 deg ... 10x50 B ... Mike Linnolt (Dillingham, HI) [Out-Out method, Tycho2+Bessell corr. Dark sky site, NELM~6.0. Coma has really shrunk significantly recently.]
2003 Feb. 01.84 UT: m1=5.7, Dia.=4', DC=7, Tail= 35' in PA: 45 deg ... 10x70 B ... J. Carvajal (Madrid, Spain) [Comet has passed the m1=6.0 barrier for me although total brightness and DC are growing very slowly day by day at the time that diameter is decreasing. Tail= is now clearly seen. Nice view through 10cm R @25x]
2003 Feb. 01.80 UT: ml=5.3, Dia.=7', DC=7, Tail= 1.3 deg in PA: 50º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Feb. 01.78 UT: m1=4.9, Dia.=5', DC=8, Tail= 18' ... 8x50 B ... J. P. Navarro Pina (Ctra. Fuente Librilla, Murcia, Spain)
2003 Feb. 01.77 UT: m1=5.3, Dia.=6', DC=7/, Tail= 1.5 deg in PA: 50 deg ... 10x50 B ... Piotr Guzik (Krosno, Poland) [First naked eye observation: 1.76 UT: m1=5.2, Dia.=6', DC=8 ... NE. Corrected for extinction]
2003 Feb. 01.75 UT: m1=5.5, Dia.=6', DC=7 ... 15x110 B ... Erwin Kurz (Gaal, Austria) [easy object also under bright light from night skiing area]
2003 Feb. 01.75 UT: m1=5.6, Dia.=10', DC=7, Tail= 0.5 deg ... 9x63 B ... Luca Basili (Ostia Lido, Rome, Italy) [Comet altitude from horizon: 21°, Out-Out method, Light Pollution.]
2003 Feb. 01.75 UT: m1=5.2, Dia.=6', DC=8, Tail= 1 deg in PA: 55 deg ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [In out method, good sky, light pollution]
2003 Feb. 01.75 UT: m1=5.6, Dia.=6', DC=7, Tail= 1 deg. in PA: 50 deg ... 10x50 B ... Svetozar Stefecek (Sobotiste, Slovakia) [out-out method]
2003 Feb. 01.74 UT: m1=5.3, Dia.=6', DC=6, no tail ... 7x50 B ... Mario Fonti (Fiuggi, Italy) [In-out method]
2003 Feb. 01.74 UT: m1=4.9, Dia.=5.5', DC=7/, Tail= 0.33 deg in PA: 56 deg ... 10x50 B ... Roberto Haver (Roma, Italy)
2003 Feb. 01.74 UT: m1=5.4, Dia.=6', DC=8, Tail= 30' ... 7x50 B ... Javor Kac (Kostanjevec, Slovenia) [Zenithal LM 6.1]
2003 Feb. 01.74 UT: m1=5.0, Dia.=3', DC=8, Tail= 1 deg in PA: 52 deg ... 7-cm R (25x) ... Sergey E. Shurpakov (Baran', Belarus)
2002 Feb. 01.73 UT: m1=5.2, Dia.=12', DC=7, Tail= 1 degree in PA: 052 degrees ... 7x50 B ... Mike Begbie (Harare, Zimbabwe) [ Comet at six degrees altitude, some remaining twilight. A bright highly condensed core with large, faint outer coma. Made this observation while mourning the loss of the space shuttle Columbia and its crew. To all of you at N.A.S.A., the families of those who have perished and the American and Israeli people, our hearts go out to you at this time of tragic loss.]
2003 Feb. 01.73 UT: m1=5.4, Dia.=3', DC=7, Tail= 25' in PA: 51° ... 7x50 B ... Silvio Klausnitzer (Pohrsdorf, Germany) [Comet observed in the end of twillight. Only diameter and Tail= were measured in 25-cm SCT (63x). And, I was surprised at faint naked-eye-visibility.]
2003 Jan. 31.80 UT: m1=5.7, Dia.=6', DC=8, Tail= 0.5 deg. in PA: 55 deg ... 7x50 B ... Juan Jose Gonzalez (Buseco - Oviedo, alt.470 m, Asturias, North Spain) [NELM=5.5 near comet]
2003 Jan. 31.75 UT: m1=4.9, Dia.=12', DC=8, Ions Tail= 4 deg in PA: 85 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Comet visible to naked eye, clearly brighter since my last observation. This evening I Have used the Morris Method and 4 stars in the field of my 7x50B. The Tail= is very long and probably my is an underestimation]
2003 Jan. 31.75 UT: m1=5.9, Dia.=6', DC=7, Tail= 15' PA: 45° ... 20x50 B  ... A. Diepvens (Balen, Belgium)
2003 Jan. 31.75 UT: m1=5.0, Dia.=10', DC=7 ... 20x80 B ... Sandro Baroni (Milan,Italy)
2003 Jan. 31.71 UT: m1=5.6, Dia.=8', DC=7, Tail= 0.5 deg. in PA: 90 deg ... 20x60 B ... Manos Kardasis( Glyfada-Athens,Greece) [Light pollution]
2003 Jan. 31.73 UT: m1=5.1, Dia.=4', DC=8, Tail= 50' ... 7-cm R (25x) ... Sergey E. Shurpakov (Baran', Belarus)
2003 Jan. 31.72 UT: m1=5.4, Dia.=6', DC=6 ... 20x60 B ... A. Baransky (Bucha, Kyiv region, Ukraine)
2003 Jan. 31.72 UT: m1=5.4, Dia.=6', DC=6 ... 20x60 B ... A. Baransky (Bucha, Kyiv region, Ukraine)
2003 Jan. 31.41 UT: m1=5.6, Dia.=6', DC=7 ...  12x50 B ... Yoshimi Nagai (Yamanashi, Japan)[Faint Tail= 1.3 deg long in p.a. 50 deg]
2003 Jan. 31.12 UT: m1=5.5, DC=8 ... 10x50 B ... Charles S. Morris (Fillmore, CA) [I was taking CCD images with the 41cm SCT so this was a quick estimate. Tail= was about the same as yesterday. My estimates of this comet are using the Modified-Out Method]
2003 Jan. 31.01 UT: m1=5.4 CCD, Dia.=6.2', DC=7/ ... 10-cm R & 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Coma is very large and appears to be taking on a brighter overall distribution relative to the bright nucleus (m2=10.1CCD, via 0.31m SCT), Tail= in PA 56 deg. traced for 0.3 deg in bright sky conditions, NOTE that images reveal several jets/streamers NE of coma]
2003 Jan. 30.74 UT: m1=5.4:, Dia.=7', DC=6 ... 6x30 B ... A. Baransky (Kyiv, Ukraine)
2003 Jan. 30.41 UT: m1=5.6, Dia.=6', DC=7 ... 10x40 B ... Yoshimi Nagai (Yamanashi, Japan) [Faint Tail= 1.0 deg long in p.a. 55 deg]
2003 Jan. 30.12 UT: m1=5.6, DC=8, Tail= 3 deg ... 10x50 B ... Charles S. Morris (Fillmore, CA) [The high clouds finally cleared enough for me to have another look at this comet, through scattered high clouds. First half of Tail= was very obvious.]
2003 Jan. 30.04 UT: m1=5.7, Dia.=5', DC=8, Tail= 0.5 deg. in PA: 055 deg ... 11x80 B ... Paul Robinson (Norman, OK, USA) [Slight light pollution. Round coma. Tail= very faint. I'm getting worried about its performance]
2003 Jan. 31.02 UT: m1=5.2, Dia.=7', DC=5 ... Naked Eye ... Phillip J. Creed (Killbuck, OH) [In 16x80B, m1=5.5 (Bobrovnikoff), Dia.=5', DC=7, Tail==1.5 deg in PA 060, though Tail='s surface brightness is still quite low. Intensely-condensed coma as seen in 25-cm SCT @ 114X, with some Tail= structure evident]
2003 Jan. 29.88 UT: m1=6.0, Dia.=5', DC=6/, Tail= 25' in PA: 50 deg ... 10x70 B ... J. Carvajal (Madrid, Spain) [Tail= easily seen in binos, but no significant changes appreciated]
2003 Jan. 29.83 UT: m1=5.6, DC=6 ... 8x40 B ... Jose Carlos Millan (Estacion de VadoJaen, Martos,(Jaen), Spain) [Observation poor due to twilight,and it was neccesary to observe quickly, because some clouds come to this zone]
2003 Jan. 29.79 UT: m1=5.7, Dia.=8', DC=6 ... 16x50 B ... Stephen McCann (Southampton, England)
2003 Jan. 29.77 UT: m1=5.3, Dia.=10', DC=8, Ions Tail= 2 deg in PA: 85 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Comet steady. In-out method]
2003 Jan. 29.75 UT: m1=5.4, Dia.=6', DC=7/, Tail= 1.5 deg in PA: 50 deg ... 10x50 B ... Piotr Guzik (Krosno, Poland) [Really bright object]
2003 Jan. 29.72 UT: m1=5.5, Dia.=8', DC=6, Tail= 0.5 deg. in PA: 60 deg ... 20x60 B ... A. Baransky (Bucha, Kyiv region, Ukraine)
2003 Jan. 29.46 UT: m1=6.0, Dia.=2', DC=7 ... 11x80 B ... Angelito Sing (Manila, Philippines)
2003 Jan. 29.23 UT: m1=5.6, Dia.=4.0', DC=6 ... 10x50 B ... Mike Linnolt (Honolulu, HI) [In-Out method. Tycho2+Bessell corr. Poor conditions, light pollution and clouds. NELM~3.5]
2003 Jan. 29.014 UT: m1=6.0, Dia.=8', DC=5 ... 20x80 B ... Jesus Guerrero (Barquisimeto, Venezuela)
2003 Jan. 28.84 UT: m1=5.4, Dia.=7', DC=6, Tail= 0.5 deg. in PA; 75º ... 8x40 B ... Jose Carlos Millan (Estacion de VadoJaen, Martos,(Jaen), Spain) [Observation with excellent conditions, MALE: 6.2]
2003 Jan. 28.79 UT: ml=5.5, Dia.=12', DC=6 ... 10x50 B ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Jan. 28.77 UT: m1=5.5:, Dia.=5', DC=7/, Tail= 1 deg in PA: 50 deg ... 10x50 B ... Piotr Guzik (Krosno, Poland) [Comet seen only for several seconds beetween clouds]
2003 Jan. 28.76 UT: m1=5.5, Dia.=6', DC=8 ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [In-Out Method, light pollution]
2003 Jan. 28.75 UT: m1=6.1, Dia.=10', DC=6, Tail= 0.5 deg ... 9x63 B and 0.20-m L (31x) ... Luca Basili (Tolfa, Civitavecchia, Italy) [Comet altitude from horizon: 26°, Out-Out method, High humidity but very clear sky.]
2003 Jan. 28.75 UT: m1=5.1, Dia.=10', DC=6 ... 20x80 B ... Sandro Baroni (Milan, Italy)
2003 Jan. 28.75 UT: m1=5.8, Dia.=4', DC=7 ... 7X50 B ... Antonio Giambersio (Potenza, Italy)
2003 Jan. 28.75 UT: m1=5.3, Dia.=12', DC=8/, ions Tail=~2.5 deg in PA: 85 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Comet apparently almost steady in brigthness and shape. Haze]
2003 Jan. 28.73 UT: m1=6.3, Dia.=7', DC=6, No Tail ... 7x50 B ... Mario Fonti (Rome, Italy) [Light pollution, haze, in-out method]
2003 Jan. 28.45 UT: m1=5.6, Dia.=4', DC=6 ... 10x50 B ... Quanzhi Ye (Guangzhou, China) [with a very exciting Tail=]
2003 Jan. 28.41 UT: m1=6.0, Dia.=7', DC=7 ... 12x50 B ... Yoshimi Nagai (Yamanashi, Japan) [Faint Tail= 0.5 deg long in p.a. 55 deg]
2003 Jan. 28.01 UT: m1=5.9 CCD, Dia.=3.7', DC=8/ ... 10-cm R + CCD ... P. Clay Sherrod (ASO - Conway) [*m2 via CCD, 0.31m SCT @ 10.5, Tail= in PA 58 degrees, multi-component with longest at 0.2 deg. length, highly condensed starlike nucleus in coma with very distinct reddish hue visually]
2003 Jan. 27.86 UT: m1=5.7, Dia.=6' , DC=6 ... 7x50 B ... Jose Carlos Millan (Martos, Jaen, Spain) [Observation corroborated with 25 cm L x87. MALE 5.2]
2003 Jan. 27.84 UT: m1=5.8 , Dia.=10', DC=6 ... 10x50 B ... Francisco A. Rodriguez (Gran Canaria, Canary Islands)
2003 Jan. 27.77 UT: m1=5.6, Dia.=6.5', DC=6 ...  25-cm L (37x) ... J. P. Navarro Pina (El PalMar, Murcia, Spain)
2003 Jan. 27.75 UT: m1=5.9, Dia.=6', DC=7, Tail= 1.0 deg. in PA: 50 deg ... 7x50 B  ... Oddleiv Skilbrei (Hønefoss, Norway) [Barely visible to naked eye at in focus magnitude 5.8. NEL= 6.0.]
2003 Jan. 27.74 UT: m1=5.4, Dia.=12', DC=9, ions Tail=~3 deg in PA: 80 deg ... 7x50B ... T. Scarmato (Calabria, Italy) [Comet very nice with a strong central condensation. The first degree of the Tail= is much brigth and seem visible a second large curved Tail= (dust?) long about 50' in PA 70 deg]
2003 Jan. 27.74 UT: m1=5.2, Dia.=9', DC=4 ... 20x80 B ... Sandro Baroni (Milan,Italy)
2003 Jan. 27.74 UT: m1=6.4, Dia.=7', DC=6, No Tail ... 7x50 B ... Mario Fonti (Rome, Italy) [Light pollution]
2003 Jan. 27.71 UT: m1=5.9, Dia.=5', DC=6 ... 12x50 B ... Bjørn H. Granslo (Nyland, Oslo, Norway)
2003 Jan. 27.46 UT: m1=5.6, Dia.=6', DC=6, Tail= 10' or more in PA: 40 deg ... 10x50 ... Quanzhi Ye (near Guangzhou, China) [a wonderful object]
2003 Jan. 27.02 UT: m1=5.7 CCD, Dia.=3.7', DC=7/ ... 0.41-m SCT/CCD ... P. Clay Sherrod, (ASO - Conway) [Tail= measured at 12' length in PA, images show corkscrew affect of some Tail= components and much irregular curving, 8 astrometric readings, comet has brightened significantly in past two days]
2003 Jan. 26.90 UT: m1=5.9, Dia.=12', DC=6 ... 10x50 B ... Francisco A. Rodriguez (Gran Canaria, Canary Islands)
2003 Jan. 26.84 UT: m1=6.1, Dia.=6', DC=6/ ... 10x70 B ... J. Carvajal (Madrid, Spain) [No significant changes since previous observation, just a bit brighter and more condensed.]
2003 Jan. 26.79 UT: m1=6.0, Dia.=5', DC=6/ ... 12x50 B  ... Bjørn H. Granslo (Movatn, Oslo, Norway) [With 7.0-cm f/6.8 R (15x): Dia.=5', DC=7, coma appeared bluish, an apparently stellar central condensation (mag. approx. 8) was surrounded by a diffuse glow with ill-defined boundaries. Comet only clearly seen for a couple of minutes due to clouds, NEL = 5.4 at best.]
2003 Jan. 26.78 UT: m1=5.7, Dia.=5.5', DC=7/, Tail= 1.5 deg in PA: 62 deg ... 10x50 B ...  Roberto Haver (Frasso Sabino, Italy)
2003 Jan. 26.76 UT: m1=5.8, Dia.=9', DC=8 ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [Out-Out Method, small light pollution]
2003 Jan. 26.74 UT: m1=6.6, Dia.=7', DC=6, no tail ... 7x50B ...  Mario Fonti (Fiuggi, Italy)
2003 Jan. 26.71 UT: m1=6.3, Dia.=5', DC=6, no tail ... 9x63B ... Luca Basili (Ostia Lido, Rome, Italy) [Light pollution, comet altitude from horizon: 31°, Out-Out method.]
2003 Jan. 26.52 UT: m1=6.4, Dia.=4', DC=5 ... 20x80 B ... Andrew Pearce (Lancelin, Western Australia) [Tycho-2 comparison stars at same altitude as comet were used.]
2003 Jan. 26.24 UT: m1=6.2, Dia.=5.0', DC=7, Tail= 15' in PA: 65 ... 10x50 B ... Mike Linnolt (Dillingham, HI) [In-Out method. Tycho2+Bessell corr. Dark sky site, but some zodiacal light. NELM~6.0]
2003 Jan. 26.12 UT: m1=6.1, Dia.=6', DC=8, Tail= 1.75 deg ... 10x50 B ...  Charles S. Morris (Fillmore, CA) [Jan. 26.12: m1=6.0 ... 20x80 B ... The Tail= is more obvious.]
2003 Jan. 25.85 UT: m1=6.3, Dia.=7', DC=5 ... 6x30 B ... J. M. San Juan (Toledo, Spain)
2003 Jan. 25.84 UT: m1=6.2, Dia.=8', DC=6 ... 6x30 B ... J. Carvajal (Toledo, Spain) [Poor conditions make impossible to detect (clearly) the Tail= in binos (even in 7x50B). Keeps a well defined central condensation. Using 45cm L @ 65x, Tail= length visible is around 0.5 deg.]
2003 Jan. 25.81 UT: m1=5.1, Dia.=6', Tail= 17', DC=9 ... 8x50 B ... J. P. Navarro Pina (Ctra.Fuente Librilla, Murcia ,Spain) [m2=9.4, comet visible naked eye, very good conditions of observation]
2003 Jan. 25.81 UT: ml=6.0, Dia.=8', DC=5, Tail= 35' in PA: 57º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Jan. 25.80 UT: m1=6.0, Dia.=8', DC=7  ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [Light pollution, in-out method]
2003 Jan. 25.79 UT: m1=5.5, Dia.=13', DC=8/, Tail=~2.5 deg. in PA: 75 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Comet just visibile to naked eye appear almost of stellar shape with a coma clearly elongated in Tail= direction. In-out method]
2003 Jan. 25.77 UT: m1=6.0, Dia.=7', DC=6 ...  16x50 B ... Stephen McCann (Southampton, England)
2003 Jan. 25.74 UT: m1=5.5, Dia.=10', DC=7, Tail= 40' in PA: 065 degrees ... 7x50 B ... Mike Begbie (Harare, Zimbabwe) [Comet at 15 degrees altitude, caught for ten minutes in a very clear gap between clouds. fainter outer coma seems to compose about two thirds of the coma radius, with a very condensed core. Used the Sidgwick for the above estimate, but also did a estimate using the Morris and the same instrument-nearly half a magnitude fainter! I think that this particular comet's morphology seems to favour the first method, at least until maybe the DC becomes even more condensed] {Sorry, but the fact that the Sidgwick method gives a bright estimate doesn't make it correct! It is difficult/impossible for the eye-brain to accurately estimate the AVERAGE surface brightness of a highly condensed comet. That is why Sidgwick is NOT recommended for this type of comet. One would expect an overestimate of brightness given that the observer would tend to give more weight to the brighter portion of the coma. csm
2003 Jan. 25.73 UT: m1=5.3, Dia.=8', DC=5 ... 20x80 B ... Sandro Baroni (Milan, Italy)
2003 Jan. 25.52 UT: m1=6.4, Dia.=4', DC=5/ ... 20x80 B ... Andrew Pearce (Lancelin, Western Australia)
2003 Jan. 25.39 UT: m1=6.4, Dia.=6', DC=7 ... 12x50 B ... Yoshimi Nagai (Yamanashi, Japan)
2003 Jan. 24.86 UT: m1=6.1, Dia.=6', DC=5/ ... 10x70 B ... J. Carvajal (Madrid, Spain) [The central condensation seems a bit fainter today, this clearly smoothes the brightness profile]
2003 Jan. 24.80 UT: ml=6.1, Dia.=8', DC=5, Tail= 37' in PA: 58º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Jan. 24.79 UT: m1=6.1, Dia.=6', DC=7/ ... 10x70 B ... Fabio Zucconi (Lodi, Italy) [Good sky, light pollution, in-out method]
2003 Jan. 24.75 UT: m1=5.5, Dia.=--, DC=8 ... Naked Eye ... T. Scarmato (Calabria, Italy) [Comet visible to naked eye with adverted vision. In 7x50B show a coma about 12' and a Tail= long at least 2 deg in PA 75 deg]
2003 Jan. 24.74 UT: m1=6.1, Dia.=5', DC=7 ... 20x50 B ... A. Diepvens (Balen, Belgium)
2003 Jan. 24.73 UT: m1=5.2, Dia.=10', DC=6 ... 20x80 B ... Sandro Baroni (Milan,Italy)
2003 Jan. 24.13 UT: m1=6.3, Dia.~8', DC=7/, Tail= 1.75 deg ... 10x50 B ... Charles S. Morris (Fillmore, CA) [Jan. 24.13: m1=6.3 ... 20x80 B]
2003 Jan. 23.86 UT: m1=6.9, Dia.=7', DC=5, no tail ... 11x70 B ... Philippe Roux (Ploumilliau, France) [Comet altitude 13 degres, clear sky but strong humidity. rond bright with a stellar nucleus m1 estimated by bobrovnikoff method]
2003 Jan. 23.86 UT: m1=6.2, Dia.=7', DC=6 ... 10x70 B ... J. Carvajal (Madrid, Spain) [Strong central condensation with a coma smaller and more diffuse than weeks ago.]
2003 Jan. 23.84 UT: m1=6.4, Dia.=5', DC=6 ... 7x50 B ... Jose Carlos Millan (Martos, Jaen, Spain) [Bobrovnikoff. Observation corroborated with 25 cm L x87. Strong Wind]
2003 Jan. 23.81 UT: ml=6.5, Dia.=8', DC=5, Tail= 30' in PA: 55º ... 15-cm R (30x) ... Rafael Benavides Palencia (Posadas, Córdoba, Spain)
2003 Jan. 23.80 UT: m1=6.1, Dia.=7', DC=6 ... 7x50 B ... Juan Jose Gonzalez (Sierra del Aramo, alt.1031 m, Asturias, North Spain) [Zodiacal Light, NELM=5.9 near comet]
2003 Jan. 23.81 UT: m1=6.0, Dia.=7', DC=6, Tail= 0.2 deg. in PA: 60 deg ... 11x80 B ... Juan Jose Gonzalez (Sierra del Aramo, alt.1031 m, Asturias, North Spain) [Zodiacal Light, NELM=5.9 near comet]
2003 Jan. 23.79 UT: m1=5.8, Dia.=9', DC=6 ... 7x50 B ... Virgilio Gonano (Udine, Italy) [LIght pollution]
2003 Jan. 23.74 UT: m1=5.8, Dia.=8', DC=5 ... 16x50 B ... Stephen McCann (Southampton, England) [Observed towards end of twilight]
2003 Jan. 22.75 UT: m1=6.9, Dia.=5', DC=6, No Tail ... 9x63 B ... Luca Basili (Ostia Lido, Rome, Italy) [Light pollution and Haze, comet altitude from horizon: 34°, Out-Out method]
2003 Jan. 22.24 UT: m1=6.5, Dia.=5.5', DC=6 ... 11-cm L (18x) ... Mike Linnolt (Honolulu, HI) [In-Out method. Tycho2+Bessell corr. NELM~3.8]
2003 Jan. 22.04 UT: m1=6.2, Dia.=7', DC=7, Tail= 0.5 deg in PA: 060 ... 16x80 B ... Phillip J. Creed (Wilmot, OH) [Starting to become a fine binocular object but it appears to be following a more prosaic light curve. Finally get clear nights in Ohio but along with brutal cold.]
2003 Jan. 21.78 UT: m1=6.2, Dia.= 6', DC= 5, Tail= 3' in PA: 118 deg ... 8-cm B (x11) ... Carlos Labordena (Castellon, Spain)
2003 Jan. 21.73 UT: m1=6.6, Dia.=8', DC=7 ... 20x50 B ... Alfons Diepvens (Balen, Belgium)
2003 Jan. 21.73 UT: m1=6.0, Dia.=15', DC=7/, Tail=~1.5 deg in PA: 70 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Coma elongated and central condensation much marked. The start side of the Tail= is very bright and appear not only as a ions Tail=. Also in 25 cm Newton at 45x the apparent dust Tail= is easy visible]
2003 Jan. 21.40 UT: m1=6.4, Dia.=8', DC=8 ... 7x35 B ... Yoshimi Nagai (Yamanashi, Japan) [Before moonrise. An object is condensed.]
2003 Jan. 20.85 UT: m1=6.3, Dia.=7', DC=5 ... 10x50 B ... Francisco A. Rodriguez (Gran Canaria, Canary Islands)
2003 Jan. 20.80 UT: m1=6.3, Dia.=6', DC=6, Tail= 0.3 deg. in PA: 65 deg. ... 11x80 B ... Juan Jose Gonzalez (Sierra del Aramo, alt.1031 m, Asturias, North Spain) [Observation made after the end of astronomical twilight and before moonrise. Mountain location, clear sky, NELM=5.8 near comet]
2003 Jan. 20.79 UT: m1=6.4, Dia.=6', DC=6, Tail= 0.2 deg. in PA: 65 deg ... 7x50 B ... Juan Jose Gonzalez (Sierra del Aramo, alt.1031 m, Asturias, North Spain) [Observation made after the end of astronomical twilight and before moonrise. Mountain location, clear sky, NELM=5.8 near comet]
2003 Jan. 20.75 UT: m1=6.5, Dia.=7', DC=6, Tail= 20' in PA: 70 deg ... 7x50B ... Javor Kac (Vrhnika, Slovenia) [Zenithal LM 6.0]
2003 Jan. 20.73 UT: m1=6.1, Dia.=11', DC=7/, Tail=~1 deg in PA: 75 deg ... 7x50B ... T. Scarmato (Calabria, Italy) [Comet much condensed with a coma apparently less large but elongated]
2003 Jan. 20.72 UT: m1=6.5, Dia.=6', DC=4, Tail= not visible ... 20x60 B ... Manos Kardasis (Glyfada-Athens, Greece) [light pollution]
2003 Jan. 20.04 UT: m1=6.8, Dia.=6', DC=7, Tail= 0.25 deg. in PA: 045 deg ... 11x80 B ... Paul Robinson (Norman, OK, USA) [Slight light pollution. Round coma. Tail= very faint. Slight starlike center visible in 15cm L]
2003 Jan. 19.78 UT: m1=7.4, Dia.=5', DC=6 ... 25-cm L (37.5x) ... J. P. Navarro Pina (El Palmar, Murcia, Spain) [bobrovnikov]
2003 Jan. 19.76 UT: m1=6.8, Dia.=3', DC=4 ... 25-cm SCT (63x) ... Silvio Klausnitzer (Pohrsdorf, Germany) [In bright moonlight and in a hazy skie comet was only visible in telescope. In binoculars the comet could not be detectet.]
2003 Jan. 19.74 UT: m1=6.4, Dia.=6', DC=6 ... 10x50 B ... Roberto Haver (Roma, Italy)
2003 Jan. 19.73 UT: m1=6.7, Dia.=5', DC=6, Tail= 0.8 deg in PA: 60 deg ... 20.3-cm L (63x) ... Piotr Guzik (Krosno, Poland)
2003 Jan. 19.72 UT: m1=6.5, Dia.=7', DC=6, Tail= 0.5 deg in PA: 60 deg ... 10x50B ... Piotr Guzik (Krosno, Poland)
2003 Jan. 19.72 UT: m1=6.2, Dia.=13', DC=7/, Tail=~1.3 deg in PA: 75 deg ... 7x50 B ... T. Scarmato (Calabria, Italy) [Clear increase of the brightness since my last observation. The coma is more condensed and the central side almost stellar]
2003 Jan. 19.71 UT: m1=6.6, Dia.=5', DC=4 ... 15x70 B ... Johann Reifberger (Wals, Austria)
2003 Jan. 19.70 UT: m1=6.8, Dia.=8', DC=7 ... 16x70 B ... Antonio Giambersio (Potenza, Italy)
2003 Jan. 19.46 UT: m1=6.5, Dia.=6', DC=6 ... 10X50 B ...  Quanzhi Ye (Guangzhou, China) [a little contaminated and moonlight, comet could be found easily]
2003 Jan. 18.77 UT: m1=6.8, DC=3 ... 15x70 B ... Johann Reifberger (Wals, Austria)
2003 Jan. 18.75 UT: m1=6.3, Dia.=3.4', DC=5 ... 8-cm R f/5 (12,5x) ... Claudio Pra (Alleghe, Italy) (moonlight interference)
2003 Jan. 18.74 UT: m1=6.6, Dia.=7', DC=5 ... 7x50 B ... Mike Begbie (Harare, Zimbabwe) [Sidgewick Method. Comet in moonlight and seen for about five minutes between clouds.]
2003 Jan. 18.72 UT: m1=6.8:, Dia.=10', DC=6 ... 10x50 B ... Ralf Kannenberg (Niederweningen ZH, Switzerland) [out-out method, full moon from behind, but comet was easy to see]
2003 Jan. 16.24 UT: m1=6.8, Dia.=6', DC=7 ... 10x50 B ... Mike Linnolt (Honolulu, HI) [In-Out method. Tycho2+Bessell corr. Poor conditions with bright moonlight and haze, but comet is a fairly easy condensed object]
2003 Jan. 15.98 UT: m1=7.5, Dia.=5', DC=1 ... 6-cm R f/13 (40x) ... Alexandre Amorim (Florianopolis, Brazil) [moonlight interference]
2003 Jan. 15.79 UT: m1=7.0, DC=3 ... 10x40 B ... Johann Reifberger (Wals, Austria)
2003 Jan. 15.75 UT: m1=6.9, Dia.=6', DC=5 ... 7x50 B ... Mike Begbie (Harare, Zimbabwe) [Strong moonlight interference, but the comet is still visible. Sidgewick Method used]
2003 Jan. 15.75 UT: m1=6.8, Dia.=8', DC=5 ... 10x50 B ... David Pringle-Wood (Harare, Zimbabwe)
2003 Jan. 15.73 UT: m1=6.4, Dia.=15', DC=7, Tail= 1 deg in PA: 70 deg ... 7x50B ... Tony Scarmato (Calabria, Italy)
2003 Jan. 15.70 UT: m1=7.4, Dia.=6', DC=5, Tail= not visible ...  20x60 B ... Manos Kardasis (Glyfada-Athens, Greece) [Moon,light pollution]
2003 Jan. 15.46 UT: m1=7.3, Dia.=8', DC=6 ... 20x100 B ... Katsumi Yoshimoto (Yamaguchi,Japan)
2003 Jan. 15.05 UT: m1=6.6, Dia.=~3.5', DC=8/ ... 0.41-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Visual 10x50B. Distinct Tail= imaged in PA for 8.2' length, coma is highly condensed with *m2 = 13.0 CCD, very strong gibbous moonlight nearby precludes effective diameter and m1 estimates (m1 via 10 x 50 binoc.)]
2002 Nov. 25.16 UT: m1=13.2, Dia.=1.0', DC=2/ ... 41-cm L ... Alan Hale (Cloudcroft, New Mexico) [surprisingly bright, considering that I was unable to detect this comet visually two weeks ago]
2002 Nov. 22.35 UT: m1=14.5 CCD, Dia.=1', DC=4/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [This comet has brightened significantly over previous days and is quite conspicuous (CCD) in spite of full moonlight. A very distinct, stellar nucleus, otherwise coma is a uniform circular glow]
2002 Nov. 19.35 UT: m1=15.2 CCD, Dia.=18", DC=4/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Imaged and measured in extremely bright skies with full moon very close by nuclear (*m2) = 16.3 CCD comet is maintaining brightness, but estimate is likely underestimated because of moonlight]
2002 Nov. 13.37 UT: m1=16.5 CCD, Dia.=15", DC=7/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Comet is displaying a very distinct stellar nucleus (m2=17.1), surrounded by a uniformly diffuse and bright coma, note that the comet was imaged for astrometry three times at one hour intervals and the magnitude (fading from previous nights) is consistent on all measurements]
2002 Nov. 12.37 UT: m1=16.1 CCD, Dia.=14", DC=3/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Comet is round and faint, astrometry recorded. Seemingly a bit brighter than previous night]
2002 Nov. 11.90 UT: m1=16.5 CCD, Dia.=16", DC=4/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Comet appears considerably more compressed, smaller, measurements indicate a slight magnitude drop as well]
2002 Nov. 10.34 UT: m1=16.1 CCD, Dia.=18", DC=3/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Very bad conditions with high winds, limited exposures, comet is quite faint, small and diffuse showing very rapid motion nearly due west]
2002 Nov. 08.37 UT: m1=16.3 CCD, Dia.=0.18', DC=3/ ... 0.31-m SCT/CCD ... P. Clay Sherrod (ASO - Conway) [Comet shows perhaps some elongation in a near-N-S. Comet C/2002 V1 (NEAT) imaged with the CCD @ f/3.75 for 90 seconds. Showing perhaps a bit more nebulosity than on previous night, no central condensation]
Advertisements