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Old 26-06-2016, 12:37 PM
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IC4628 Prawn and Dark Tower mosaic

Been experimenting with mosaics - the mosaic planning/framing wizard in SGP, and PI's processing using CatalogStarGenerator for registration and the GradientMergeMosaic process.

Here's first go at a 2x2 mosaic, an Ha image of the Prawn and Dark Tower region. Each panel was 8x4mins binned 2x2. Quite happy with the result. Planning on adding some RGB and OIII/SII later. Did capture some OIII/SII for the Prawn panel, will post and update with that later.

Critiques welcome.

Full size on my Flickr.
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  #2  
Old 26-06-2016, 01:16 PM
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Cool to see those two objects in the same field, Troy! I'm hoping to get a LRGB mosaic of a few panels done at Astrofest this year.
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  #3  
Old 26-06-2016, 01:22 PM
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marc4darkskies (Marcus)
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Very nicely done Troy! Excellent composition and great tonal quality!

Cheers, Marcus
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Old 26-06-2016, 01:26 PM
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strongmanmike (Michael)
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Cracking field Troy, not too many images out there showing these two as a pair, looking forward to seeing what you do on this one

Mike
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Old 26-06-2016, 01:37 PM
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Atmos (Colin)
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Turned out great Troy, quite a large field! I am still yet to do a mosaic, images like this make me want to take the plunge.
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  #6  
Old 26-06-2016, 03:21 PM
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Great image Troy, nice FOV.

Mosaic looks seamless, well done

Cheers Geoff
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Old 26-06-2016, 03:24 PM
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Interesting FOV, probably just me but I'm struggling to get my head around it 'cos it's presented sideways to the one I'm working on!
Lots going on in that field
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Old 26-06-2016, 04:50 PM
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Fabulous composition. I did not know the Prawn was so close to the Dark Tower.

Not sure how you are going to do an LRGB out of it from here though. I normally do LRGB panels and then combine those into a mosaic.

Greg.
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Old 27-06-2016, 09:00 AM
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That looks great Troy. What an amazing field.
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Old 27-06-2016, 09:54 AM
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Quote:
Originally Posted by RickS View Post
Cool to see those two objects in the same field, Troy! I'm hoping to get a LRGB mosaic of a few panels done at Astrofest this year.
Cheers mate. Since I'm going to be up there for more nights this year than I normally do, I was also thinking of doing some sort of mosaic. That's what this rehearsal is for

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Originally Posted by marc4darkskies View Post
Very nicely done Troy! Excellent composition and great tonal quality!

Cheers, Marcus
Thanks, Marcus.

Quote:
Originally Posted by strongmanmike View Post
Cracking field Troy, not too many images out there showing these two as a pair, looking forward to seeing what you do on this one

Mike
Cheers mate. As a few others have commented, it puts it in perspective how close they are relative to each other.

Quote:
Originally Posted by Atmos View Post
Turned out great Troy, quite a large field! I am still yet to do a mosaic, images like this make me want to take the plunge.
Dooooo eeeeet.

Quote:
Originally Posted by ozstronomer View Post
Great image Troy, nice FOV.

Mosaic looks seamless, well done

Cheers Geoff
Cheers mate.

Quote:
Originally Posted by Andy01 View Post
Interesting FOV, probably just me but I'm struggling to get my head around it 'cos it's presented sideways to the one I'm working on!
Lots going on in that field
There is lots to look at. Re angles/framing, this is simply at sky angle 0 rotation. I do try to consider rotating frames for composition, but for this particular one, the easy solution (no rotation) worked for me.

Quote:
Originally Posted by gregbradley View Post
Fabulous composition. I did not know the Prawn was so close to the Dark Tower.

Not sure how you are going to do an LRGB out of it from here though. I normally do LRGB panels and then combine those into a mosaic.

Greg.
Thanks mate. I used a 3500x3000px image downloaded from catalogues using PI's CatalogStarGenerator script. Since that's the reference image for the mosaic, I'm hoping it'll be a simple task to register all frames (L, R, G, B, whatever) to it and combine. That's the plan, anyways

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Originally Posted by Retrograde View Post
That looks great Troy. What an amazing field.
Cheers mate. I'm really enjoying the wider fields with multiple objects, as opposed to tightly framed single objects.
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  #11  
Old 27-06-2016, 11:05 AM
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Excellent field of view Troy. I look forward to the final image.
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  #12  
Old 27-06-2016, 02:14 PM
Placidus (Mike and Trish)
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Very fine, Troy. Quite lovely. Interesting to see that the nebulosity around the Dark Tower is much fainter than the Prawn. Tower reminds me of a cross between a lighthouse, complete with beam of light, and a Dalek with a light saber. The little clusters help make the scene.

Momentarily ignoring the recognizable individual parts, the whole thing is a beautiful composition.

Last edited by Placidus; 27-06-2016 at 04:10 PM.
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  #13  
Old 28-06-2016, 04:30 PM
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That's a beautiful shot Troy, very natural looking, I love it!
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  #14  
Old 30-06-2016, 01:25 PM
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multiweb (Marc)
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Great field Troy. Can't go wrong with Ha in that part of the sky. It's choke-a-block with it.
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  #15  
Old 30-06-2016, 05:14 PM
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Quote:
Originally Posted by Paul Haese View Post
Excellent field of view Troy. I look forward to the final image.
Thanks mate. I've got some RGB data at moment - figuring out how to blend/merge process is a bit more complicated than just the Ha

Quote:
Originally Posted by Placidus View Post
Very fine, Troy. Quite lovely. Interesting to see that the nebulosity around the Dark Tower is much fainter than the Prawn. Tower reminds me of a cross between a lighthouse, complete with beam of light, and a Dalek with a light saber. The little clusters help make the scene.

Momentarily ignoring the recognizable individual parts, the whole thing is a beautiful composition.
Cheers guys. Hadn't thought about the lighthouse and Dalek analogies, but now that you mention it...

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Originally Posted by Rex View Post
That's a beautiful shot Troy, very natural looking, I love it!
Thanks Rex. I prefer the "natural" look.

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Originally Posted by multiweb View Post
Great field Troy. Can't go wrong with Ha in that part of the sky. It's choke-a-block with it.
Thanks mate. Sure is. Not long to AF now
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