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Old 01-07-2020, 08:30 AM
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Andy01 (Andy)
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IC 1284 & Friends in Sagittarius - (Reprocessed Version)

Now that the Malin entries are in, it's time to visit something new.
This one was a major technical challenge for me to image.

Rendering natural star colours & blue reflection nebulosity from my light polluted location was hard! Credit due to Robert Colombari for his fine Apod image of M24 which I referenced for a guide to the final colours.

Itís an interesting mix of Ha rich emissions & blue Reflection nebulosity contrasted against a swirling region of intricate dark interstellar dust.

IC 1284 also known as Sharpless 37. Alongside IC 1284 are two blue reflection Nebulae vdB 118 and vdB 119.
There are dark nebulae in this region as well. The most significant is LDN 315.
This is a dark lane structure that goes top to bottom across the image.
It extends about 6 degrees of sky. VdB 119 is about 40 light years distant; vdB 118 is about 185 light years distant; IC 1284 is about 1,400 light years distant.

EDITED VERSION - Reprocessed with Less NR & better star colours

Taken from suburban light pollutionville, Melbourne, Australia.
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Click for full-size image (M24_HaRGB_iis.jpg)
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Last edited by Andy01; 04-07-2020 at 01:30 PM. Reason: typo
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  #2  
Old 01-07-2020, 09:57 AM
Placidus (Mike and Trish)
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A very fine image of a refreshingly different target Andy. The intricate winding dust lanes catch the imagination.
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Old 01-07-2020, 10:21 AM
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An eye-pleasing rendition of a less trodden path.
Nice one
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Old 01-07-2020, 10:25 AM
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Nice work Andy. I like this area. Looks like a blue eyed monster emerging from a cave
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Old 01-07-2020, 10:43 AM
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multiweb (Marc)
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The jimmy neutron nebula. Very nice colours and superb data. I reckon you should just back off the noise reduction a tad and keep some grain in the fullres. There are a lot of tiny stars in that shot that need to be preserved.
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Old 01-07-2020, 12:30 PM
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Quote:
Originally Posted by Placidus View Post
A very fine image of a refreshingly different target Andy. The intricate winding dust lanes catch the imagination.
Cheers M&T The Surf coast dust lane is sure interestingly shaped, wonder how that happened?

Quote:
Originally Posted by Peter Ward View Post
An eye-pleasing rendition of a less trodden path.
Nice one
Thanks Peter I visited this area a few years ago but wasn't really happy with the colours. I've taken a leaf from your book and gathered a lot more data this time, which helps combat the LP here.

Quote:
Originally Posted by Ryderscope View Post
Nice work Andy. I like this area. Looks like a blue eyed monster emerging from a cave
Cheers Rodney! Yes, agreed - or a little lightning bug perhaps?

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Originally Posted by multiweb View Post
The jimmy neutron nebula. Very nice colours and superb data. I reckon you should just back off the noise reduction a tad and keep some grain in the fullres. There are a lot of tiny stars in that shot that need to be preserved.
Merci Marc! Jimmy Neutron nebula, I like that!
I'll have another look at the data re: the NR. Salut!
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Old 01-07-2020, 01:45 PM
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Very nice Andy, not something I have seen a lot of.
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Old 01-07-2020, 02:39 PM
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A pleasing image. The reflection nebula looks great. Not a lot of colour in the stars and too many all white stars though. Must be hard with light polluted subexposures. Perhaps more colour saturation on the stars layer?.

Greg.
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Old 01-07-2020, 03:40 PM
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Very nice Andy, not something I have seen a lot of.
Cheers Bart - There's still plenty of rarely imaged targets up there for the adventurous imager

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Originally Posted by gregbradley View Post
A pleasing image. The reflection nebula looks great. Not a lot of colour in the stars and too many all white stars though. Must be hard with light polluted subexposures. Perhaps more colour saturation on the stars layer?.

Greg.
Thanks Greg, reckon that's about as good as it gets from the conditions here, this one would really pop under dark skies!
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Old 01-07-2020, 07:37 PM
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Excellent result from Melbourne skies Andy Hard to get optimal colour fidelity from heavily light polluted skies. Quite an intriguing bit of sky that and not imaged that often, you're right I shot it many years ago in my early days of CCD'ing but have never gone back...should

I'm with Marc though, might be worth easing off the noise reduction a tad..?

Mike
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Old 04-07-2020, 01:35 PM
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Originally Posted by strongmanmike View Post
Excellent result from Melbourne skies Andy Hard to get optimal colour fidelity from heavily light polluted skies. Quite an intriguing bit of sky that and not imaged that often, you're right I shot it many years ago in my early days of CCD'ing but have never gone back...should

I'm with Marc though, might be worth easing off the noise reduction a tad..?

Mike
Cheers Mike (& Marc) I've completely reprocessed this image. Beginning with the base RGB image, splitting it into seperate Colour & Lum layers (thanks for the reminder there Marcus) then gently adding back the Ha (lighten mode + Hue/sat) & Blue lum layers (Lighten mode + Hue/sat).
Baked with a gentle tough of carefully masked NR & tonal contrast.

Same Link as before.
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Old 04-07-2020, 04:59 PM
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marc4darkskies (Marcus)
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I like this version a lot Andy - colours are much better and the composition is great!

Yeah it's pretty noisy at full res, but I notice you didn't do any luminance. Any reason for that? If you did a few hours of luminance your ability to do noise management would improve significantly I think.
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Old 04-07-2020, 05:25 PM
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Quote:
Originally Posted by marc4darkskies View Post
I like this version a lot Andy - colours are much better and the composition is great!

Yeah it's pretty noisy at full res, but I notice you didn't do any luminance. Any reason for that? If you did a few hours of luminance your ability to do noise management would improve significantly I think.
Hey Marcus, thanks for that.
Having achieved a reasonable LRGB result of M7 recently, I might reconsider shooting Lum from home again. I had previously just thought only HaRGB was possible here.
Cheers
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Old 04-07-2020, 05:52 PM
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You know?...the best thing about this image is...ITS NOT THE BLOODY FIGHTING DRAGONS!



Sorry, juuuust joshin ..I love NGC 6188 ...

As usual, when people post different versions of the same image...I'm in the camp of.. somewhere in between

Mike
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Old 04-07-2020, 06:03 PM
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Quote:
Originally Posted by strongmanmike View Post
You know?...the best thing about this image is...ITS NOT THE BLOODY FIGHTING DRAGONS!



Sorry, juuuust joshin ..I love NGC 6188 ...

As usual, when people post different versions of the same image...I'm in the camp of.. somewhere in between

Mike

Yep, agreed!

Er, thanks for the incisive critique too.
I used to be decisive, but now I’m not so sure
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Old 07-07-2020, 11:07 AM
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Very very nice image Andy
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