C/2001 Q4 (NEAT)
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040821.96 - B 9.6 TK 38.0 L 4.3 68 6 6 0.25 030 J Warell
Comments: Well condensed round coma. Faint diffuse tail with brightest part
in PA 030 but extending to about PA 000. Altitude 40 degrees. Dark,
transparent sky, ZLM 6.7. Site: Bifrostobservatoriet, Mariestad, Sweden.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040606.85 - B 6: SC 8.0 B - 20 6 5 - - J Danielsson
Comments: Bright twilligt sky and sky glow from Kalmar.The comet is a faint
glow with a central "star". Site: Färjestaden, Oland, Sweden
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040601.85 - B 5.5: SC 8.0 B - 20 10 5 0.5 - J Danielsson
Comments: Somewhat elongated, bright center in coma. V-shaped, stubby tail.
Very bright sky from full moon 160 degrees to the south. Its still a large
object, and I´m waiting for next dark period. Site: Gronhogen, Oland
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040526.95 - B 5.0 SC 8.0 B - 20 10 5 - - J Danielsson
Comments: Somewhat elongated, bright center in coma. Very bright sky from
Kalmar, almost first quater moon 20 degrees away from the comet. Site:
Farjestaden, Oland, Sweden
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040521.95 - B 3.7 SC 8.0 B - 20 10 5 1 - J Danielsson
Comments: Bright sky from Kalmar. Site: Farjestaden, Oland, Sweden
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040520.44 - G 4.3 TK - E - 1 - - - - T Karhula
040520.44 - - - - 5.0 B - 18 10 7 1.3 105 T Karhula
Comments: This was the first time that I saw two naked eye comets
simultaneously! NEAT was less prominent than LINEAR. Their tails pointed
in different directions. Astronomical twilight. Site: Geraldton, Western
Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040518.91 - B 5.7 TK 8.0 B - 11 6 6 0.1 105 J Warell
Comments: Well condensed round coma. Faint short diffuse tail. Altitude 24
degrees. Light sky, twilight, ZLM 4.3. Site: Uppsala, Sweden.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040516.95 - B 2.5 SC 6.3 B - 9 20 5 1.5 - J Danielsson,
Comments: Best observation so far. Bright head, elongated coma, tail almost
parallell with horison. Tail has a V-shape. I´m thinking that this comet is
almost a look a like to Comet Liller 1988a. It looked brighter than
previous nights. Good observing conditions. Dark sky, no haze. Site:
Kastlosa, Oland, Sweden
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040516.45 - G 3.9 TK - E - 1 - - - - T Karhula
040516.45 - - - - 5.0 B - 18 11 7 1.4 105 T Karhula
Comments: NEAT was in the same field of view as Praesepe (separation 2.9
deg) and had a broad, straight tail. Site: Geraldton, Western Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040515.95 ! B 4.9 TK 8.0 B - 11 6 6 0.2 110 J Warell
Comments: Well condensed round coma. Faint diffuse tail. Altitude 10
degrees. Twilight, ZLM 5.0. Site: Uppsala, Sweden.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040515.75 - B 3: - 8.0 B - 20 20 5 1 - J Danielsson
Comments: Bright sky background due to some fog. Mostly round coma but
slightly elongated towards the tail. This is a gasrich comet, it has less
dust and therefore it is not a great landmark on the western sky. I´m
thinking in terms of it looking like Comet Hyakutake 1996. It´s nucleus
looks like a dull glowing pearl and connects well to the coma. Site:
Gronhogen Observatory, Sweden
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040514.47 - G 3.9 TK - E - 1 - - - - T Karhula
040514.47 - - - - 5.0 B - 18 13 6 1.7 110 T Karhula
Comments: Made an interesting naked eye fuzzy pair with Praesepe (M44).
Site: Geraldton, Western Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040513.75 - B 3: - 8.0 B - 20 15 5 - - J Danielsson
Comments: Bright sky background by twilight and light pollution from the
city of Kalmar. A large and well condensed comet, a shining nucleus, round
coma, a slight hint of elongation to a tail? Observation made from balcony
in central Farjestaden.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040513.45 - G 3.8 TK - E - 1 - - - - T Karhula
040513.45 - - - - 5.0 B - 18 14 6 1.9 115 T Karhula
Comments: The tail seemed to be slighly bent towards E and the nucleus
seemed to be W of the centre. Transparent sky. Astronomical twilight.
Site: Geraldton, Western Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040512.45 - G 3.8 TK - E - 1 - - - - T Karhula
040512.45 - - - - 5.0 B - 18 10 6/ 2.8 120 T Karhula
Comments: NEAT looked like double star naked eye when it was located only
0.4 degrees W of beta Cnc. The comet had a more diffuse tail than yesterday
and was straight. Astronomical twilight. Site: Geraldton, Western
Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040511.46 - G 3.6 TK - E - 1 - - - - T Karhula
040511.46 - - - - 5.0 B - 18 15 6 3.4 135 T Karhula
Comments: The tail was slightly curved towards S as seen with 18x50B.
Site: Geraldton, Western Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040510.46 - G 3.5 TK - E - 1 - - - - T Karhula
040510.46 - - - - 5.0 B - 18 12 7 3.7 140 T Karhula
Comments: NEAT looked like last time but had a much longer tail due to a
darker sky. Its tail was faintly visible to the naked eye and slightly
curved towards S as seen with 18x50B. Temperature +21 C. Site: Geraldton,
Western Australia.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040509.89 - G 3.6 TK - E - 1 30 5/ 3.5 120 J Warell
Comments: Beautiful comet. Well condensed, large rund coma. Straight tail
about 10' in width. In 8x25 B taildg 5.5, with another component in PA
approx 180, length 40', and faint diffuse emission between them. In 10 cm T
x33 small diffuse cc dia approx 1', mag 8. No color apparent with either
instrument. Clear skies, ZLM 6.9. Site: Observatorio del Roque de los
Muchachos, La Palma, Spain, alt. 2400 m.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040506.88 - G 3.2 TK - E - 1 40 5/ 2.0 120 J Warell
Comments: Round diffuse coma with brighter center, moderately condensed.
Tail straight. In 8x25 B broad fan-shaped stubby tail in PA 100-165 with
brighter central core in PA 120. Located 10 degrees E of alpha CMa.
Altitude 21 degrees. Site: Observatorio del Roque de los Muchachos, La
Palma, Spain, alt. 2400 m.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040504.86 - B 3.2 TK 2.5 B - 8 18 5 2.5 125 J Warell
Comments: Round diffuse coma with brighter center, moderately condensed.
Tail straight. Observation made during total lunar eclipse. Altitude 16
degrees; in trianle formed by eta, epsilon, delta CMa. Site: Observatorio
del Roque de los Muchachos, La Palma, Spain, alt. 2400 m.
Date (UT) n MM Mag Ref Aper Type f x dia DC taildg tailpa Observer
----------------------------------------------------------------------------
040504.46 - G 3.5 TK - E - 1 - - - - T Karhula
040504.46 - - - - 5.0 B - 18 7 7 1.7 130 T Karhula
Comments: Visible quite easily with naked eyes despite the 100% illuminated
Full Moon (before total lunar eclipse). The dust tail seemed to be slightly
curved towards S. Located 0.8 degree S of epsilon CMa. The comet was
beautiful as seen with 18x50 Image Stabilizer binoculars. Site: Geraldton,
Western Australia.