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Mono (and HA) thread

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#1 khursh

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Posted 17 October 2021 - 11:41 AM

Or more aptly, the in-defense-of-mono thread. With the amazing cameras and filters out these days, it is a marvel what people can do in full technicolor. I submit, however, that when viewing nebular objects especially in mono, it is easier for my eyes to discern fine structure. Also, for some weird reason, it reminds me more of my visual astronomy days. Call it nostalgia.

 

I will offer up a couple of examples here, but I'd like to spark some interest in others' contributions if possible. I doubt there will be enough people interested in drab old mono to make it a sticky, but let's see what people have done!

 

Open kimono: part of my interest in mono is because of light pollution, color is frustrating to process and pale in comparison to my uncombined mono/HA.

 

IC 5146 (cocoon nebula)

drizzle integration stretch
 
NGC 7000 (North America Nebula)
Ha ABE crop decon

 


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#2 imtl

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Posted 17 October 2021 - 12:26 PM

"In-defence-of-mono"? That is the last thing that needs defending in this hobby. I share your enthusiasm toward pure-mono images.

 

med_gallery_259665_13682_5736997.png

 

med_gallery_259665_13682_11129380.jpg

 

med_gallery_259665_13682_4035583.jpg

 

med_gallery_259665_13682_1491047.jpg


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#3 Enance42

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Posted 17 October 2021 - 01:18 PM

Very fine images guys. It is images like these thst inspired me to do some of my own. Here is my contribution to this thread. It is my 1st  project, I have not done any processing yet, just stacked so far.

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#4 jonnybravo0311

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Posted 17 October 2021 - 01:32 PM

This is an image I created from about 12 hours of S2, Ha and O3 data:

 

med_gallery_347158_16159_3704321.png

 

I did something a little different than I normally do (after creating an HOO version) :). For this image, I took the S2, Ha and O3 masters, and stacked the three together to form a single monochrome image, which I then edited.


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#5 khursh

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Posted 17 October 2021 - 01:37 PM

I will invest in Oiii and Sii filters at some point. I really like your composite, Jonny


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#6 khursh

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Posted 17 October 2021 - 01:45 PM

I did this just Friday night.  7 hours of H-A. Decon and stretch. Nothing else. 

 

Melotte 15/IC 1805

get.jpg?insecure


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#7 Mike in Rancho

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Posted 17 October 2021 - 01:48 PM

Well, my visual astronomy days make me want to vomit a little, so I don't want to hearken back to any of that. shocked.gif

 

But I do know what you mean.  Mono, or even certain colors, lends itself better to revealing structure.  Could just be my eyes, but when I do HOO in red/blue, I lose a lot of the detail I can discern in nebulous knots and clouds, which I can see before coloring it (using ST, so processing is done in L and color brought in later).  However, if I use a different bicolor palette, such as H(H+O)O, which is more of a gold and blue, I can see the detail much better.  Probably the shadowing and the way different colors interact with the level of luminance?


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#8 terry59

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Posted 17 October 2021 - 01:55 PM

Mono doesn't get the love that highly saturated images do but I like them also

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#9 Professor2112

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Posted 17 October 2021 - 02:26 PM

This was my first Ha image I took with my new 2600mm.  The scope I bought for the 2600 hadn’t come in yet, so I stuck it on my RASA 8, and only had a short window.  But still got about an hour and a half of data, which seems like plenty for this combo.  I was so blown away by how much detail and contrast there was compared to subs with my 294mc pro that I ended up selling the RASA/294mc pro to fund an upgrade to Chroma Ha and Oiii filters because I knew the TS/2600mm combo would be my workhorse and the RASA/OSC would most likely just sit for a long time.  I like this post!  Great topic. 
 

 

get.jpg?insecure


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#10 terry59

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Posted 18 October 2021 - 07:03 AM

I'm working to improve my processing skills. StarXTerminator has really made a difference for me

 

IC 410

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Edited by terry59, 18 October 2021 - 07:08 AM.

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#11 Dereksc

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Posted 18 October 2021 - 01:07 PM

Nice to see some mono images.

 

Here is just over 9 hours of Ha data collected for this months imaging challenge (Pacman nebula). Histogram stretch, curves and crop for effect:

 

NGC281_3_Ha_crop.jpg

 

Regards

 

Derek


Edited by Dereksc, 18 October 2021 - 04:07 PM.

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#12 terry59

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Posted 18 October 2021 - 03:39 PM

Nice to see some mono images.

 

Here is just over 9 hours of Ha data collected for this months imaging challenge (Pacman nebula). Histogram stretch, curves and crop for effect:

 

attachicon.gifNGC281_3_Ha_crop.jpg

 

Regards

 

Derk

Very nice....I'd increase the black just a tad to make it pop


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#13 Madratter

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Posted 19 October 2021 - 09:16 AM

I agree with the statement that Mono really doesn't need defending. I have been doing and advocating for mono for years as have some of the other posters in this thread. While color is nice (and I like it), mono definitely has its place. And it is a fantastic teaching/learning tool as well. Good mono processing is foundational to good color processing.

 

There are many examples of mono on my Astrobin account.


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#14 khursh

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Posted 19 October 2021 - 10:48 AM

Luckily for me, the title just says mono/HA and not "in defense of...". How about In Praise of...?



#15 jonnybravo0311

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Posted 19 October 2021 - 10:54 AM

Luckily for me, the title just says mono/HA and not "in defense of...". How about In Praise of...?

Well... to be fair, your very first sentence in the OP is "Or more aptly, the in-defense-of-mono thread."



#16 khursh

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Posted 19 October 2021 - 11:10 AM

I can change my mind, which may be proof I have one.


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#17 terry59

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Posted 19 October 2021 - 12:23 PM

I can change my mind, which may be proof I have one.

Kirk: Are you sure you won't change your mind?

 

Spock: Is there something wrong with the one I have?


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#18 Madratter

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Posted 19 October 2021 - 03:21 PM

Plenty wrong with mine, although I'm not sure changing it would fix it. :p


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