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m31 2hr and 1hr triad files attached

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#1 42itous1

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Posted 19 November 2019 - 12:43 PM

Well, I did 2 hrs on m31 last night but there were some clouds.  I still think data is ok. I almost never throw away a sub.

 

In the future I would like to mix my osc data with Triad data to bring out the HA in galaxies.  Knowing that 1hr may not produce much and that the osc data is only 2hrs, I don't know if it is enough yet.

 

I really don't know the best way to mx the data--but here are the 2 files if any one wants to give it a shot.  No flats for the Triad stack

 

 

31 2hrs w/clouds

 

https://www.dropbox....clouds.fit?dl=0

 

m31 1hr triad

 

https://www.dropbox....rtriad.fit?dl=0



#2 brettkoz

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Posted 19 November 2019 - 12:47 PM

I don't know what program you're using, but essentially you want to isolate the HA data from your triad filter (you can use extract HA in Astro Pixel Processor, or just use the red channel) and add it to the red channel of your M31 stack. You will want to either get TONS of HA data or mask it off to only affect the hydrogen regions, lest you add a bunch of noise to your image.

To add the HA data to your red channel, you can use any number of different tools in Pix, but in Photoshop it's super easy, you can ctrl+a and ctrl+c to copy your monochrome HA data and ctrl+v it into the red channel of your M31 in the Channels panel.


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#3 Monkeybird747

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Posted 19 November 2019 - 01:42 PM

Quick and dirty. Nothing fancy done here. No Ha injection yet. Not sure how to handle the triad data, but working on it later tonight.

 

get.jpg?insecure

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  • Screenshot from 2019-11-19 13-39-07.png

Edited by Monkeybird747, 19 November 2019 - 01:58 PM.

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#4 Monkeybird747

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Posted 19 November 2019 - 01:52 PM

Edited to knock off a bit of a blue cast.

 

get.jpg?insecure

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  • Screenshot from 2019-11-19 13-50-39.png

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#5 42itous1

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Posted 19 November 2019 - 02:04 PM

Very nice MB!

 

I guess you were able to get the image even with the thin clouds.

 

Very curious to see if you can mix the data with Triad.



#6 Monkeybird747

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Posted 19 November 2019 - 02:30 PM

Gave it a quick try with NBRGB Combination. Don't think it gained much and ended up nuking the core. Not really my area of expertise, so maybe someone else can take a whack at it. There is more saturation in this version. I like less on M31. Some like more.

 

 

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  • Screenshot from 2019-11-19 14-27-50.png

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#7 42itous1

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Posted 19 November 2019 - 02:34 PM

Just more proof that I need to work on processing now :)

 

I think APP has an easy way to mix Triad and osc--I will check it out.  Also, Chris Fosters' processing workflow has some new Triad type data in it--I'll check it out.

 

 

Also, I think if I add more Triad data it might work.  I'll do that when the moon comes back out.



#8 Monkeybird747

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Posted 19 November 2019 - 02:35 PM

One hour of triad data is probably not enough to do a proper Ha RGB combine. Only 1/4th of that triad data goes to the red pixels.  Here is an HaRGB of M31 by CNer Rockstarbill. Not OSC though.

 

get.jpg?insecure



#9 42itous1

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Posted 19 November 2019 - 02:49 PM

Yes--I follow Bill on AB.  I will be just gathering lots of data soon :)

 

You're processing is beautiful! How long did you spend on M31 just out of curiosity?  I suspect with your experience it was only 30-40 minutes.  My Dad guessed 3 hours.



#10 Monkeybird747

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Posted 19 November 2019 - 02:53 PM

Thank you! 30-40 is about right on m31. M33 a couple of hours.
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#11 Bretw01

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Posted 19 November 2019 - 10:03 PM

Here is an attempt at NBRGB. I took the red channel from the triad stack and set the scale in the NBRGB script to 5.20. The default is 1.20 and I usually lower it. With only one hour I had to go the other way. You can see the Ha regions in the image (red dots around the perimeter), just not as pronounced as they could be.

 

NBRGB.jpg

 

Bret



#12 42itous1

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Posted 20 November 2019 - 09:26 AM

Well done Brett!

 

Yes I see the HA showing.  Now I think if I got 5-6 hrs with uv/ir filter and 6-8 with the Triad I would have what I'm looking for:)

 

I must say seeing what you and MB can do with my data, it is clear that processing is now what I need to work on :)




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