[g__day (Matthew)]

Folk

I'm puzzled with what I caught here. Yesterday I stacked 5 * 20 minute shots of M20 last night between 8pm (Sydney time and 9:40pm) just to kick start my rig as I've done no imaging in 8 months and this was a shaken down test.

Seeing was only fair at best - so please ignore the quality of the Trifid and the very limited post processing I did.

What did surprise me was the shape slowly moving up the screen. That shot is 100 minutes combined - and in that time something moved about 3 arc minutes across the shot (the frame scale is 30 arc minutes long by 20 arc minutes wide - full moon just covers the frame lengthwise) and had a slightly red colour - see the red line near the middle slightly left and slopping up and away from the Trifid.

Tracking was quite reasonable - say +/- 1 arc second all night - so am I most likely seeing a very faint asteroid or a nearly geosynchronous satellite?

Interested what you folk reckon!

Matthew