C/1999 H1 (LEE)


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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990806.93 - S  6.5 SC  10.0  B      20  3.0  7    -      -    Timo Karhula
Comments: Comet bright but small. Altitude 10 deg and twilight. 
Temperature +7 C. Site: Virsbo, Sweden.


CCD image Obtained by Jörgen Danielsson 1999 August 25 at 00:30 UT. Composite of 7x60 sec exposures 
with a Starlight Xpress SXL 8 and 12" f/6.3 Schmidt-Cassegrain. Software-simulated guiding. 
Site: Grönhögen, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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990908.92 - S  7.9 SC  44.5  L  4.5 60  3.5  6/  0.6     95   Johan Warell
Comments: Coma well condensed, diffuse and round, outer parts very diffuse.
Small 14 mag disk-like CC at x218. Coma elongated by 2 arcmin towards PA 
approx 280 deg, presumably the base of the sunward tail. Tail data above are 
for the very thin anti-tail. Site: UAA Sandvreten Observatory, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x   dia DC taildg tailpa Observer
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990910.97 - S  7.8 HS   2.5  B   -   8    5   7  ---    ---   Johan Warell
990910.97 - -  -- --    38   L  4.3 82    5   7  0.6    095   Johan Warell 
Comments: In 38cm L very diffuse coma with much brigter center, small disklike
CC. Site: Bifrost Observatory, Mariestad, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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990912.00 - S  7.4 HS  10.0  B      20  7     7    -      -    Timo Karhula
Comments: Comet elongated towards PA 220. Site: Virsbo, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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990912.84 - S  8.0 SC  25.4  L  5.6 80   6   4   0.12   ---   KG Andersson
Comments: Coma diffuse, central condensation diameter 1.5 arcmin. Tail
data above is for anti-tail, width 1 arcmin. Site: Riala, Sweden.


CCD image (grayscale) 
CCD image (color coded)
Obtained by Jörgen Danielsson 1999 September 14 at 22:23-23:17 UT. Composite
of 25x60 sec exposures with a Starlight Xpress SXL 8 and 12" f/6.3 Schmidt-
Cassegrain, clear+IR-block filter. Field 10x15 arcmin. 
Software-simulated guiding. Site: Grönhögen, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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991009.75 - S  9.9 HS  25.0  L  5.6  56  3   3  0.07   50-60  J Danielsson/A Wettergren 
Comments: Very good transparency. Diffuse, short tail with northern edge
slightly brighter. Site: Grönhögen observatory, Öland, Sweden.


Date (UT) n MM Mag Ref Aper Type f   x  dia  DC taildg tailpa Observer
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991012.02 - S  9.3 HS  22.0  L   5  50  10   3   0.5    30    J Warell
Comments: Coma round, very diffuse. Straight long tail, faint. Very good
transparency, limiting magnitude 6.9. Site: Sandvreten Observatory, Sweden.