Asteroid (23129)

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Astro_Hoff
Posts: 4
Joined: Sat Jul 25, 2020 4:29 pm

Asteroid (23129)

Post by 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

Image


Also small video here ( unfortunately facebook compression ruins it a bit)
https://www.facebook.com/leigh.hassell. ... =3&theater
donstim
Posts: 111
Joined: Wed Sep 19, 2018 5:35 am

Re: Asteroid (23129)

Post by donstim »

Nice shot of 253. Looks like you got a satellite trail, too. Are you using sigma stacking?
timh
Posts: 77
Joined: Mon Aug 26, 2019 5:50 pm

Re: Asteroid (23129)

Post by 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
Posts: 4
Joined: Sat Jul 25, 2020 4:29 pm

Re: Asteroid (23129)

Post by 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.
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Menno555
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Joined: Mon Apr 20, 2020 2:19 pm
Location: The Netherlands
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Re: Asteroid (23129)

Post by Menno555 »

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