Jkulin Posted September 14, 2019 Share Posted September 14, 2019 Well I tried for this last year and after having a few hiccups aborted and put it off until another year. Well this has come out different than I expected, I looked at many of the beautiful images by others on here and Astrobin and really wanted to put my own stamp on this, I wanted the colours to be subtle but heavenly without being garish, not to everyone's taste and I will probably look back and think/know I can do better. This was captured over three nights with a full moon and I tried to time the filters for when the moon was more prolific. I have got some RGB data for the stars and once I have got to grips with Straton, then will look at adding that. It is far from perfect, however for me I am rather pleased with the subtle colours. I have still loads to learn but after 4 years now it is slowly getting better. Technical Data: - RC10" Truss Moravian G2-8300 MkII CCD Lodestar X2 Guide Camera QHY-M OAG Moravian 7 position 2" FW Chroma 3nm HA, OIII and SII 2" unmounted filters iOptron 120EC Mount which is finally starting to produce the goods and guiding around 0.3-0.4 8x1200s of each filter, 8 hours total Processed in PI and finished in PS CC2019 Bortle 5 Skies 19.51sqm Processed in PI:- Batch Processed ABE Histogram Stretch TGVDenoise SHO Combined Magenta Removal SCNR - Green Various Stretches Miultilinear Transform Unsharp Mask Then into Photoshop for a final tweak Here's the Bumf: - IC1805 Nebula is in the constellation Cassiopeia. In the central part of the cloud shines Melotte 15, a cluster of giant stars, young and very hot. The ultraviolet radiation from massive stars sculpted this fantastic gas column. Is commonly identified with the name of Melotte 15. The age of the cluster is estimated at a million and a half years and its distance from Earth, about 7,500 light years. Link to comment Share on other sites More sharing options...
tooth_dr Posted September 14, 2019 Share Posted September 14, 2019 Pretty impressive John! I like the moody and muted colour scheme (don’t look at my recent version of this lol) 6 minutes ago, Jkulin said: I tried to time the filters for when the moon was more prolific. An interesting choice, making life harder for yourself? Link to comment Share on other sites More sharing options...
Jkulin Posted September 14, 2019 Author Share Posted September 14, 2019 30 minutes ago, tooth_dr said: Pretty impressive John! I like the moody and muted colour scheme (don’t look at my recent version of this lol) An interesting choice, making life harder for yourself? Cheers Adam, don't look too closely 🙂 We have had very few clear rnights lately so this was one that I knew I could grab as it was opposite where the moon was moving, I shot Ha when it was at its worst and then OIII when it was opposite as that (so I am advised) is most affected by the moon, its probably the reason why I had to go a bit heavy than I like on the de-noise because of the moons affect. NB I'm going to have a look at yours noise, as it is bound to be brilliant 🙂 Link to comment Share on other sites More sharing options...
newbie alert Posted September 14, 2019 Share Posted September 14, 2019 Very 3d looking, great work Link to comment Share on other sites More sharing options...
DaveS Posted September 14, 2019 Share Posted September 14, 2019 You're braver than I am to be taking [SII] and [OIII] in moonlight. Although I got some reasonable HII last night with 3nm Astrodon I will wait until there's much less moon to get more of the rest. Link to comment Share on other sites More sharing options...
dave_galera Posted September 14, 2019 Share Posted September 14, 2019 John, Have a look at using MureDenoise on your masters before you combine, its absolutely brilliant at removing the noise at the linear stage Link to comment Share on other sites More sharing options...
Jkulin Posted September 14, 2019 Author Share Posted September 14, 2019 15 minutes ago, DaveS said: You're braver than I am to be taking [SII] and [OIII] in moonlight. Although I got some reasonable HII last night with 3nm Astrodon I will wait until there's much less moon to get more of the rest. It really wasn't a problem Dave (S), I just planned the sessions around it, good filters helped. 15 minutes ago, dave_galera said: John, Have a look at using MureDenoise on your masters before you combine, its absolutely brilliant at removing the noise at the linear stage Thanks Dave, is that a script for PI? If it is a plugin for PS then will need to have a look as I have never fully processed an Astro image in PS I just use it to finish things off? Link to comment Share on other sites More sharing options...
souls33k3r Posted September 15, 2019 Share Posted September 15, 2019 Really impressive John. Hard work has most certainly paid off Link to comment Share on other sites More sharing options...
carastro Posted September 15, 2019 Share Posted September 15, 2019 I like that, very nice. Carole Link to comment Share on other sites More sharing options...
dweller25 Posted September 15, 2019 Share Posted September 15, 2019 Fantastic image 👍 Link to comment Share on other sites More sharing options...
dave_galera Posted September 15, 2019 Share Posted September 15, 2019 17 hours ago, Jkulin said: Thanks Dave, is that a script for PI? If it is a plugin for PS then will need to have a look as I have never fully processed an Astro image in PS I just use it to finish things off? Hi John, Its a script in PI Script > Noise Reduction > MureDenoise. It is usually applied straight after the integration process and applied to each master before combining. This post refers: https://pixinsight.com/forum/index.php?topic=9206.0 Link to comment Share on other sites More sharing options...
Jkulin Posted September 15, 2019 Author Share Posted September 15, 2019 Thanks Dave, yes after hunting around the PI forum I discovered that it had been incorporated into the scripts. i’ll have a play with that as I know just the image that needs more noise removal. Link to comment Share on other sites More sharing options...
bob-c Posted September 15, 2019 Share Posted September 15, 2019 Hi John, this is a lovely image to my eye mate well done. It looks as though you have your mount doing the biz now. I am just starting to guide with mine now, the new firmware seems to be doing the trick for you . Bob. Link to comment Share on other sites More sharing options...
Jkulin Posted September 15, 2019 Author Share Posted September 15, 2019 13 minutes ago, bob-c said: Hi John, this is a lovely image to my eye mate well done. It looks as though you have your mount doing the biz now. I am just starting to guide with mine now, the new firmware seems to be doing the trick for you . Bob. Cheers Bob, you need the firmware 190718, don't install any other version, guiding has been down to 0.3RMS, if you need help then let me know and I can always talk you through it. Link to comment Share on other sites More sharing options...
x6gas Posted September 16, 2019 Share Posted September 16, 2019 One of my favourite targets and you've done a terrific job... Link to comment Share on other sites More sharing options...
Jkulin Posted September 17, 2019 Author Share Posted September 17, 2019 On 16/09/2019 at 07:00, x6gas said: One of my favourite targets and you've done a terrific job... Thanks Indeed, it has so much interest in it, it is probably my favourite so far, I may reprocess and then mount it on an Aluminium plate. Link to comment Share on other sites More sharing options...
dave_galera Posted September 17, 2019 Share Posted September 17, 2019 Hi John, To answer your question on PixInsight forum I use pixelmath as follows: 1. Stars Image = Original Image - Starless Image 2. Work on Starless image as required 3. New Image = Modified Starless Image + Stars Image And don't forget the Stars Image is just about a perfect star mask as you can get Hope this helps Link to comment Share on other sites More sharing options...
Jkulin Posted September 17, 2019 Author Share Posted September 17, 2019 6 minutes ago, dave_galera said: Hi John, To answer your question on PixInsight forum I use pixelmath as follows: 1. Stars Image = Original Image - Starless Image 2. Work on Starless image as required 3. New Image = Modified Starless Image + Stars Image And don't forget the Stars Image is just about a perfect star mask as you can get Hope this helps Thanks Dave, not too clued up with Pixel Maths, I tend to use a predefined instance that someone else has designed and then use that as a process icon. Problem I had was that the Star removal module won't install, so need to fix that first. I'll have a chat with my mate who is a programmer and see if he can assist with your suggestions, thanks for your help. Link to comment Share on other sites More sharing options...
dave_galera Posted September 17, 2019 Share Posted September 17, 2019 You literally type in the image names with a minus sign between i.e. Melotte15 - starless and it will create a new image for you, rename this as "stars" and away you go Link to comment Share on other sites More sharing options...
Jkulin Posted September 17, 2019 Author Share Posted September 17, 2019 Brilliant thanks Dave, I thought I was going to have to get involved with some programming which at my age I am useless at Link to comment Share on other sites More sharing options...
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