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Splitting OSC channels  

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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
June 28, 2020 06:24  

Hello, I'm new to APP and am trying to split OSC data into RGB channels. How do I go about doing this?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
June 28, 2020 11:51  

There is a split channels option in tab 2, all the way down in the options list. Then press “save calibrated frames”.


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 8, 2020 18:58  

Second question on a similar note. I'm trying to see if it is possible to combine OSC data with true mono data. I thought I could extract Ha and Oiii but those processes result in stacked ha and oiii files. Is it possible to exract Ha and Oiii into un-stacked subs so I can stack them with mono subs?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 9, 2020 11:16  

Yes, when you select to “extract Ha” and then load the data, it should automatically produce light frames that are Ha only. So no need to do anything else and those are the unstacked frames.


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 9, 2020 17:43  

@vincent-mod Interesting, I must be doing something wrong because when I select extract Ha then load subs nothing happens until I integrate at which time I am given a stacked HA tiff file.

 


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 9, 2020 18:33  

Mmm, ok let me check that to be sure I didn't give you wrong advice here. 😉


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 9, 2020 18:34  

@vincent-mod Much appreciated!


(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 9, 2020 18:43  

Yes, so I checked to be 100% sure. When I select the "extract Ha" in the demosaic algorith and then load in the lights, I immediately get the Ha mono data loaded. This is not the case for you then? Check the histogram on the top right, it should show a mono histogram.


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 9, 2020 18:46  

@vincent-mod I already had the lights loaded when I selected extract Ha. Am I to understand that it matters that you select extrac Ha BEFORE loading the lights? I will try it right now.


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 9, 2020 19:14  

Yes definitely, when you load them, tab 0 is executed basically. So if you loaded them and then change it, it doesn't work.


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 9, 2020 19:16  

@vincent-mod I tried it and it worked. Thank you! And I can see that if i also want to extract oiii I have to remove the lights from APP, change tab 0, and reload them with the master calibration frames.


(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 9, 2020 19:21  

Excellent, hope you can process that data further and please share the results. 🙂


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 Davm
(@davm)
Main Sequence Star Customer
Joined: 3 years ago
Posts: 36
August 9, 2020 22:53  
Posted by: @regpratt

And I can see that if i also want to extract oiii I have to remove the lights from APP, change tab 0, and reload them with the master calibration frames.

Have I been doing it wrong all this time...I extract Ha and then jump to tab 0 and change the algorithm to extract OIII without reloading!! 😯 

Dave


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(@astrobackyardutah)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 3
August 10, 2020 02:19  

So I tried this and then tried to combine my mono and HA extracted OSC data and got these error message.

E148715A C4EA 415A A8AA FBAAD1CC7262
B38B5746 B9C6 4B1A BC1E 02A33D47DC8A

Not sure where to go.


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(@regpratt)
White Dwarf Customer
Joined: 4 months ago
Posts: 23
August 10, 2020 02:45  

Whats the difference between extracting ha/oii and just splitting RGB channels?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 10, 2020 10:23  
Posted by: @regpratt

Whats the difference between extracting ha/oii and just splitting RGB channels?

APP does some more clever (I have no idea exactly what internally) processing when extracting the Ha signal. It gives a cleaner result, keeps the sensor resolution intact, etc. So you’re getting a better image back basically.


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385
August 10, 2020 10:26  

@astrobackyardutah

I’m afraid I can’t read what’s on the screenshot. You do have to be careful you’re not combining RGB and mono and try to normalize that, that doesn’t work as it’s 3-channel broadband data versus 1-channel mono. So the split R, G and B is required first and then you can process those together with the mono data.


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(@astrobackyardutah)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 3
August 10, 2020 10:54  

@vincent-mod Thank you for the advice. I am new to APP, so can you give me a details work flow to extract my HA and OIII data from my OSC camera & filter and then combine it with my mono HA and OIII pictures please?


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(@vincent-mod)
Quasar Admin
Joined: 3 years ago
Posts: 2385

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(@astrobackyardutah)
Molecular Cloud Customer
Joined: 3 months ago
Posts: 3
August 10, 2020 15:58  

@vincent-mod Thank you for this! Do you have one that would help with combining the LEnhance with Mono Narrowband data?


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