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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6
December 11, 2020 00:19  

i have amp glow that’s displayed in my processed subs that I can’t remove. Is there away to mask this prior to stacking/processing? It’s barely showing in pre-processes subs but when ran thru APP it’s amplified.


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(@wvreeven)
Galaxy Admin
Joined: 2 years ago
Posts: 593
December 11, 2020 00:55  

@mannymo63

Hi Manuel, what camera do you use? Normally amp glow can be processed out by using the correct darks. What exposure time, gain and temperature were the lights and darks taken at?

 

Thanks, Wouter


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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6
December 11, 2020 02:25  

ZWOASI294 PRO, 120g/300s subs/-10*


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(@wvreeven)
Galaxy Admin
Joined: 2 years ago
Posts: 593
December 11, 2020 10:31  

Yes that camera is notorious for its problematic amp glow. I have read reports of many users on several forums who were struggling with the amp glow produced by this camera. I am not sure how to solve it unfortunately. Maybe the ZWO forum can help you? In any case, this is not an APP thing but really related to the camera. 

Wouter


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 11, 2020 10:32  

And how does your masterdark look like @mannymo63 ?


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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6
December 11, 2020 22:45  

@wvreeven

I’m currently redoing all my calibration files and will also make masters according to Sara Wager tutorial video. I will follow up afterwards. Yes, I’m aware of ZWOASI294 PRO reputation with amp glow, but my main issue is trying to process it out. I will also visit the ZWO forum. Thanks😊👌🏾


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(@wvreeven)
Galaxy Admin
Joined: 2 years ago
Posts: 593
December 11, 2020 23:32  

@mannymo63

Good idea to redo your calibration files. It is very hard to process it out once it slips into your image integrations. I hope the new calibration files solve your issue.

 

Wouter


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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6
December 12, 2020 06:40  

After processing a picture this is the results. I have a huge spike in the upper right corner. I dont want to crop it due to cutting out the subject. The other picture is straight off of ASI AIR (non-processed). I've redone my master calibration files using Sara Wager's video tutorial and do not believe I've done anything out of order. This is killing me

A4695254 FC18 4854 9E0B 7977A2C1FE82
A4695254 FC18 4854 9E0B 7977A2C1FE82
1B9AE824 D641 4D05 990C 2E4DD5831F4C
1B9AE824 D641 4D05 990C 2E4DD5831F4C

 


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 12, 2020 09:37  

So can you show a screenshot of what your masterdark looks like? And also check if the adaptive pedestal is on in tab 2, normally this is the case already.


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(@astrogee)
Neutron Star Customer
Joined: 3 years ago
Posts: 122
December 12, 2020 15:40  

I have the same camera and yes it has bad amp glow I would say but its easily calibrated out with proper dark frames. Just make sure your darks are the same temperature, gain, offset and time. APP does a great job of calibrating out this amp glow.

EDIT: Even if your exposure time is not the same, APP can scale the dark and still do a good job of calibration.


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 12, 2020 17:46  

Yes, APP is indeed able to correct severe amp-glow as well, so I'm also wondering if the calibration data is correct.


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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6

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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 12, 2020 20:40  

Thanks Manuel, I'll have to look tomorrow (or maybe Wouter still is up 🙂 ). We'll try to get this sorted.


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 13, 2020 13:30  

@mannymo63 Ok, to be able to investigate further, could you also share a single dark frame and a single light frame?


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(@mannymo63)
Brown Dwarf Customer
Joined: 7 months ago
Posts: 6
December 13, 2020 13:48  

I believe I have solved the issue. My dark flat and flat files were in the wrong folders. I produced 2 subs that displayed with no amp glow so far. Thanks for your assistance. 
Manuel


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(@vincent-mod)
Universe Admin
Joined: 4 years ago
Posts: 3075
December 13, 2020 13:55  

You mean you loaded them in with the wrong buttons in app?


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