Picking the correct exposure for Deep Sky

A place to post guides, instructions and HOWTO documents on the use of SharpCap and Astrophotography in general
Forum rules
One tutorial per topic please.
Please only post content that you have created in this form.
Tutorials should be either in PDF format as an attachment or written in the first post of the topic. Links to video tutorials you created are also acceptable.
zerolatitude
Posts: 134
Joined: Mon Mar 01, 2021 5:24 am

Re: Picking the correct exposure for Deep Sky

Post by zerolatitude »

You've mentioned the 10/20 min stack would be a total integration time of 15 hours or so.

The deep image would be (6x1) + (36x0.67) for a total of 30 hours.

If that's right, yes the deep image should in theory have an SNR of 1.4 times the short subs.

The subs time calculation is for a given total integration time.

If possible, you could integrate 15 hours worth of the deep subs, and then the two sets would be more comparable.
Cybermystic
Posts: 21
Joined: Wed Nov 03, 2021 8:33 am

Re: Picking the correct exposure for Deep Sky

Post by Cybermystic »

Ahh - thank you zerolatitude - yes, at last it is now beginning to make some sense :D

Greg
Post Reply