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Problem with Flats and Darkflats correction V1.083-beta2  

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(@lammertus)
Red Giant Customer
Joined: 4 years ago
Posts: 72
October 12, 2021 14:43  

Hi Mabula, Wouter

Lately I have been imaging and processing many sessions, each of them with Flats and Darkflats taken with a flatpanel, every session.

It was always a bit annoying that aparently the Darks/Flats did not correct well with APP so I did a trial today to see if there is any difference ( please check image ).

The trial was a quick one: 10 light with 15 flats/darkflats and a masterdark ( this is something I have my doubts about)

1) Everything loaded into APP and processed, stack loaded into Pixinsight and Automatic Background

Extracted, then simply a screentransfer applied to see something.

2) Everything loaded into PixInsight's WBPP script, Automatic Background Extracted and screentransfer applied.

It seems as if APP leaves some ampglow and at the bottom of the image some "band"

I have observed this over time with different versions of APP but did not keep track of them.

Can this be due to the masterdark?

Thanks for any insight on this!

Mert

Comparison APP PixInsight
This topic was modified 2 months ago 2 times by Lammertus

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(@lammertus)
Red Giant Customer
Joined: 4 years ago
Posts: 72
October 12, 2021 15:04  

Oh well, again user error!

I created new darks for this session and created a new masterdark with that.

Then loaded into APP as before and now it works great, so that was my fault!!

I will redo my complete dark library again!

Sorry to have bothered you al with my question, my dumb!

Regards,

Lammertus

Comparison APP PixInsight V2

 

This post was modified 2 months ago by Lammertus

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(@lammertus)
Red Giant Customer
Joined: 4 years ago
Posts: 72
October 12, 2021 15:14  

Just to show the difference:

Left is the APP stacked image with the new masterdark

Right is the APP stacked image with the old masterdark

Regards,

Mert

Comparison APP PixInsight V2left V1right

 


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(@wvreeven)
Quasar Admin
Joined: 3 years ago
Posts: 1226
October 12, 2021 16:05  

@lammertus Glad you were able to solve the issue!


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