Auto gain/exposure failing in Flats capture

Discussion of using SharpCap for Deep Sky Imaging
FEObs
Posts: 8
Joined: Sun Mar 23, 2025 7:18 pm

Re: Auto gain/exposure failing in Flats capture

#11

Post by FEObs »

Sorry to post this question here, but dambed if I can find the "new post" button.

So here it is.

In SharpCap, I am using Phd2 for guiding. There appears to be no screen controls (other than a very mild gamma corrector) for the looping images.

I am using a QHY500ii200m camera on 130mm guidescope. Everything shows up fine but any exposure more than 1 second blows out the image as in overexposed. This affects ability to see onscreen the stars, selected guide star etc.

Does anyone know if there is any histogram setting or adjustments?

Thanks
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turfpit
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Joined: Mon Feb 13, 2017 8:13 pm
Location: UK
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Re: Auto gain/exposure failing in Flats capture

#12

Post by turfpit »

FEObs
dambed if I can find the "new post" button
Select a forum, for example Gallery, then click New Topic:

new-post.JPG
new-post.JPG (40.98 KiB) Viewed 105 times

exposure more than 1 second blows out the image as in overexposed
Gain (and/or offset) too high perhaps?


Dave
FEObs
Posts: 8
Joined: Sun Mar 23, 2025 7:18 pm

Re: Auto gain/exposure failing in Flats capture

#13

Post by FEObs »

Thanks Dave
It makes sense so I will try gain/offset first night it stops raining!!!

Also, thanks for guidance on forums/new topic.
Much appreciated.

Jimmy
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