BPM clarification
 
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UPDATE FROM MABULA

I have had a very rough 2 months unfortunately health wise. I was struck 3x in a row with bacterial infections. The second infection occurred  after a routine hospital checkup and I became very sick. I had to rest and take a lot of antibiotics. Once I was recovering and restarting work 1 month ago, I again became sick. The infection was not yet gone, so even more antibiotics and rest was needed. Needless to say, it took a lot of my energy and I needed a lot of rest.

 

Finally, the infection is really gone and my energy is coming back step-by-step now and I have started work again. I am terribly sorry to have kept you waiting for support. I will address all outstanding questions and e-mails step-by step and will be on the forum daily from today.

 

APP 2.0.0-beta47 will come soon as well, a lot of work was already completed before I became very ill, so the release is also nearly ready for you. Beta47 will be much faster actually. Many workflows will be more than 2x faster, mosaics can even be 10x faster than before because registration really received a major boost... all compared to beta46.  Before I release it, I will make sure that everything is working properly and then I will release it.

BPM clarification

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(@nitesky)
Main Sequence Star
Joined: 8 years ago
Posts: 12
Topic starter  

Great software and I love the easy workflow. I do have a question though on creating a BPM. I was looking at Mabula's BPM tutorial on creating them and he mentioned using the same BPM for several months.  Darks are used and they would be good for months. Both Mabula and Sara Wager say to also load your flats. Are you referring to dark/flats because flats are by filter and in many cases by session? 

To complicate my confusion, I watched the tutorial on using Deigo's data in a multi-filter to create the Trifid. There weren't any dark/flats only darks, bias, flats (per channel).  I don't do dark removed link So, would I load just darks or darks and bias?


This topic was modified 8 years ago by nitesky

   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

A BPM is best made using super long darks (like 10-15 min or so per sub), bias and flats. APP takes the relevant data out of those and creates a calibration map that should remain the same for a long time (for your particular camera). Here's a nice video tutorial about creating one and in there luminance flats are used.



   
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(@nitesky)
Main Sequence Star
Joined: 8 years ago
Posts: 12
Topic starter  

Thanks, Vincent.  Reviewing Sara's video again, it looks like I should be able to use my 300 second darks and my Lum flats. She didn't load bias for her tutorial but guess I'll load them in any way and give it another try.



   
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(@Anonymous 174)
Joined: 9 years ago
Posts: 5702
 

Yes I would do that, should be a pretty good BPM with those subs you already have.



   
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(@maxthebuilder)
Red Giant
Joined: 9 years ago
Posts: 47
 

Hello,

If I use long darks for BPM I get some amp glow remnants. That is for ASI294MC which has a pretty strong amp glow.



   
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(@wvreeven)
Quasar
Joined: 8 years ago
Posts: 2134
 

Hi Max,

Indeed this can happen. Please play with the Hot Pixels Kappa in tab 2 under BadPixelMap and lower that to see if this reduces the amp glow in the BPM.

 

Wouter



   
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