C/2001 Q4 (NEAT)


Date (UT)  n MM Mag Ref Aper Type f   x   dia DC taildg tailpa Observer
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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.