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Flats Won't Load  

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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 4, 2020 21:33  

Was wondering why my flat frames will sometimes load, and sometimes not? Any ideas?

 

Thanks,

 

R Bell

This topic was modified 2 months ago by Rodney Bell

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(@wvreeven)
Black Hole Admin
Joined: 2 years ago
Posts: 484
December 4, 2020 22:35  

@rockinrod Rodney, that’s hard to tell without more info. What version of APP are you on? Do the same flats sometimes load and sometimes not? Or is it always the same ones that don’t load? Do you get an error message if they don’t load? Please be as verbose as you can. 

Thanks, Wouter


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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 4, 2020 22:50  

V1.082 Trial Version...I would have to duplicate the scenario again to get the error message. But I just closed and reopened the program and they loaded this time.

I noticed that it happens when I hit 'All' to clear them out and try to reload more for whatever reason. That's when they don't go in. My Light frames just did the same thing when i experimented with them...Loaded 5 lights, hit all and it went to "0", then they will not go back in.

The frames are still in the bottom window and appear to be shaded in after I hit the all or clear button. Maybe that tells you something.

I can't remember the whole message but it mentioned something about the wrong pixel size or something of that nature.

I did my Flats using my ASI294MC Pro cooled, same as my lights. Same camera.

 

Rodney

This post was modified 2 months ago 2 times by Rodney Bell

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(@wvreeven)
Black Hole Admin
Joined: 2 years ago
Posts: 484
December 4, 2020 23:09  

Rodney, that is expected behaviour. When you hit the All button, the text in the button changes to None. It is an indication of what files are marked for processing and it helps with clearing out many files at the same time. If you click the button again, the text will change back to All and you’ll see the number change from zero to the actual number of files loaded. 

Wouter


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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 5, 2020 00:23  

Here's the Flats error message i got earlier...Evidently I have to have the flats Gain the same as the Bias, and exposure times the same... I don't recall doing this with DSS or Nebulosity....Guess I'll need to redo my Bias and Flats.

 

R

Flats

 

This post was modified 2 months ago by Rodney Bell

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(@wvreeven)
Black Hole Admin
Joined: 2 years ago
Posts: 484
December 5, 2020 00:33  

Hi Rodney, it says either bias of the same gain or darkflats of the same gain and exposure time as the flats. Bias frames typically have the shortest time possible while flats don't.

Wouter


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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 5, 2020 01:48  

@wvreeven

I'm doing the exposures based on the Means number. It should work...Making them now, then I'll try a few lights and stack...I'm also taking into account my different filters. 

 

R

This post was modified 2 months ago by Rodney Bell

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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 5, 2020 02:06  
Posted by: @wvreeven

Hi Rodney, it says either bias of the same gain or darkflats of the same gain and exposure time as the flats. Bias frames typically have the shortest time possible while flats don't.

Wouter

Guess I have much to learn about APP...During the calibration I cannot use just Lights and Flats. Flats get rejected...So on a hunch, I backed up and added the Bias frames with the same Flats and it worked...

I guess this is how APP works as well, I assume...Can't use one without the other.

 

R


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(@wvreeven)
Black Hole Admin
Joined: 2 years ago
Posts: 484
December 5, 2020 11:37  

Rodney, that’s exactly what the message in the popup means. APP indeed needs either bias or darkflats in order to be able to properly calibrate the flats. Glad to read it is working for you now. 

Wouter


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(@rockinrod)
Main Sequence Star Customer
Joined: 2 months ago
Posts: 42
December 5, 2020 14:18  

@wvreeven

Guess I was not quite understanding the way it was reading. Well, I'm glad it's working now...Appreciate your assistance....This forum is much better than most I've been on...! Prompt service always appreciated...

That's a compliment...! 😉 

 

Rodney


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