Asteroid (23129)

[Astro_Hoff]

So I noticed something a little unusual on my live stack at the end of a 2hr imaging session capturing NGC 253. Upon further investigation it turns out to be Asteroid (23129). My fist asteroid capture. Without using the live stacking feature I most likely never would have spotted this. It pays to check ALL your image.

William Optics Zenithstar 73
Skywatcher HEQ5 Pro
ZWO 1600MM Pro




Also small video here ( unfortunately facebook compression ruins it a bit)
https://www.facebook.com/leigh.hassell. ... =3&theater

[donstim]

Nice shot of 253. Looks like you got a satellite trail, too. Are you using sigma stacking?

[timh]

That is really interesting -and something that would normally be missed. The question from donstim made me wonder whether sigma stacking -- or perhaps also cosmetic pixel removal algorithms ... might reduce the chances of detecting such things?

[Astro_Hoff]

Thanks. Just the luminance layer. Still got colour to add later. Sigma Stacking is ON (set to default settings) but I don't really worry about it as I re-stack and process everything later. Just use live stacking to monitor what is happening during the session. I usually 'save as seen' about once an hour just for a reference image in case something goes horribly wrong and I need to troubleshoot.

Using the live stack feature I have spotted numerous things that usually turn out to be nothing. This caught my attention as it had only moved slightly in approximately 2 hours of live stacking and did not match any other pixel patterns. I then used PIPP to create a video and confirm its movement.

[Menno555]

Very cool this
I always check my captures too for these kind of surprises