Creating Master Fla...
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2023-09-16: APP 2.0.0-beta23 has been released !

Improved performance again, CMD-A now works in macOS File Chooser, big improvement for bad column cosmetic correction, solved several bugs

We are very close now to  releasing APP 2.0.0 stable with a complete printable manual...

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Creating Master Flats

2 Posts
2 Users
Molecular Cloud
Joined: 3 years ago
Posts: 1
Topic starter  

Hello, I'm new to APP and in need of help please


APP Flats

I've just created or tried to create Master Flat/Dark/Dark Flat

Not sure if this is how my flat should turn out?

When I was creating my flats I was aiming around 32k on the histogram

any advice/tips/point in the right direction would be greatly appreciated

Universe Admin
Joined: 6 years ago
Posts: 5701

On the right-hand panel you see a dropdown menu for the stretch (it says 15% BG now), change that to "no stretch" and then check the histogram, that shows you the true exposure. Does look like you used a filter maybe?

ps. I would also add more memory to APP by going to "CFG" on the top left, increasing that to something like 16GB and restart.