Confirmation of und...
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2023-03-15: APP 2.0.0-beta14 has been released !

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Confirmation of understanding with flats/bias

3 Posts
3 Users
White Dwarf
Joined: 3 years ago
Posts: 8
Topic starter  
New to APP and trying it out.  I shoot with a nikon D5300. If I comprehend correctly, APP expect flats with 
the same exposure time as bias. I always thought that bias was suppose To be the fastest exposure possible
and then flats were to get ADU at about 50%. I use the t shirt and tablet for lighting. I suppose I could
slow the bias as that may be easier than trying to get the light to correct intensity which right now I am
already maxed out on the intensity side. Not sure if slowing bias downis smart although we are talking the
difference of 10 milliseconds to 120 ms which my flats currently are at.

Do you have any input?

This topic was modified 3 years ago 3 times by Phil Miholovich

Joined: 5 years ago
Posts: 2102

It is a LONG thread, but maybe read this first?


HTH, Wouter

Universe Admin
Joined: 6 years ago
Posts: 5386

APP doesn’t require flats with the same exposure time as Bias. That would be rather odd as flats are usually taken around 0.5-1 seconds of exposure time. Dark flats you might mean, those are at the same time as flats.