SBIG ST10 E
L=8x5m 1xBin, R=5x2m, G=5x2m, B=5x2m 2xBin  Date: 18.02.02
Pollux 0.8m azimutal mounted telescope
3557mm (=140 inch) f/4.44
SBIG Filter Set provided with the CFW8
3-lens Wynne corrector
2.1 arc seconds
MaximDL LRGB composit, PS 5.5, CCDSharp
good seeing, bad transparency
Philipp Keller and Christian Fuchs

When we combined the images, there appeared some rain-bow feature in the lower right of the galaxy. I left it there, so you can still see it.
We did not see it in the L-channels because we used a median-combine. But when we reexamined the 8 L-Channels we found this quite fast moving object. A quick glance at the minor planet data base of TheSky gave no result, so we really thought this second we found a new minor planet. However after a  check here: http://scully.harvard.edu/~cgi/MPCheck.COM
we found out, that this minor planet has been disvovered 1998. Soon after that some people looking at our web-page  found a second minor planet only in about 1arc min distance from the first one. You can see it if you look carefully at the arrows.
Inbetween we could make more measurements on this new minor planet and could report the new discovery to the minor planet center MPC.

Minor Planet 1998 HG39 passing through M99
and new unnamed minor planet (arrows)

2 nights later we could find the minor planet about 1 degree from the first position in M99. Since there was moon light is was hard at the limit of the 0.8m telescope. The magnitude is maybe less than 20. Here we added 4 2min exposures, the minor planet leaves a very faint trail here.