Apply bias to flats...
 
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Apply bias to flats/flat darks only?  

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(@whixson)
Red Giant Customer
Joined: 7 months ago
Posts: 85
February 2, 2019 00:01  

How do you tell APP to apply bias correction to your flats and/or flat darks only? 

Wayne


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(@mabula-admin)
Quasar Admin
Joined: 2 years ago
Posts: 2080
February 11, 2019 21:52  

Hi Wayne @whixson,

APP will apply bias and/or dark flat Masters to your flats if they are available. If they are not, APP will give you a warning that you will not be able to get good flat-field correction without bias and/or dark flats available.

So APP will automatically do this correctly, you will only need to supply the bias and/or dark flats and they will be used 😉

Kind regards,

Mabula

Main developer of Astro Pixel Processor and owner of Aries Productions


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(@whixson)
Red Giant Customer
Joined: 7 months ago
Posts: 85
February 11, 2019 22:40  

Thanks Mabula, what if I don’t want to apply bias to the lights but only the flats?


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(@mabula-admin)
Quasar Admin
Joined: 2 years ago
Posts: 2080
February 12, 2019 00:21  

Hi @whixson, then you will first need to create the masterflat with the bias loaded.

Then remove the bias and masterbias and load the lights...

But... why would you want to do this ? The light need to be calibrated with either bias or darks.... otherwise flat-field calibration will not work.

What would be an argument to not use bias for lights?

Mabula

Main developer of Astro Pixel Processor and owner of Aries Productions


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