Singlin Posted December 9, 2016 Share Posted December 9, 2016 My attemp at M33 a couple of nights ago. 9x 300 sec subs in L,R,G,B Skywatcher 10" Quattro Atik 383L Mesu 200 Link to comment Share on other sites More sharing options...
MartinFransson Posted December 9, 2016 Share Posted December 9, 2016 A very nice M33 with tons of detail! As a personal taste thing I´d run it through HLVG or SCNR to bring the green cast down and beef up the contrast a bit. Played with your image that way in Photoshop and an already good image got even better. In my taste, that is. If you don´t mind, I´ll post my suggested edits. If you do mind, I´m sorry Link to comment Share on other sites More sharing options...
Singlin Posted December 9, 2016 Author Share Posted December 9, 2016 Please do I would be grateful for any suggestions. Link to comment Share on other sites More sharing options...
MartinFransson Posted December 9, 2016 Share Posted December 9, 2016 Here is just a very quick edit i Photoshop. Some green reduction, selective colour and levels and curves adjustments. Link to comment Share on other sites More sharing options...
Singlin Posted December 9, 2016 Author Share Posted December 9, 2016 Tweaked the contrast and gradient in photoshop. Link to comment Share on other sites More sharing options...
Singlin Posted December 10, 2016 Author Share Posted December 10, 2016 Thanks Martin, I like the way that you have managed to get more detail out of the core of the galaxy. Mine is a combined Pixinsight/Photoshop effort. Post processing in Pixinsight Dynamic cropped all frames. Master L frame=-BackgroundModelization-Deconvolution-Multiscale Transform and applied the automatic stretch. Master RGB=Channel combination-BackgroundModelization-BackgroundNeutralization-ColorCalibration-MultiscaleTransformation-Automatic stretch. I combined the L to the RGB. I then finished off in Photoshop Link to comment Share on other sites More sharing options...
laser_jock99 Posted December 10, 2016 Share Posted December 10, 2016 Stunning M33, thanks for sharing. Link to comment Share on other sites More sharing options...
Mr Spock Posted December 10, 2016 Share Posted December 10, 2016 Very nice image. I would like to see the background just a little bit darker though. Link to comment Share on other sites More sharing options...
astrocatinfo Posted December 10, 2016 Share Posted December 10, 2016 Very nice view of M33! Congrats!! My question is: are all the small dots we can see in the spiral arms globular clusters? Or are that individual stars? Thanks, Aleix Link to comment Share on other sites More sharing options...
Singlin Posted December 10, 2016 Author Share Posted December 10, 2016 I used to like a dark background untill I got a B---ing from Olly for clipping the dark too much, I will see if that happens again Link to comment Share on other sites More sharing options...
ollypenrice Posted December 10, 2016 Share Posted December 10, 2016 7 hours ago, Singlin said: I used to like a dark background untill I got a B---ing from Olly for clipping the dark too much, I will see if that happens again Heheh! I instantly thought the black point was too high in the first one. This is much more contrasty, I think, but not at all black clipped. I just use the Ps eyedropper set to Colour Sampler and put a few 3X3 sample points on the background. I always feel that 23/23/23 suits my taste but that's only me, and in very high dynamic range images (ones with very faint nebulosity) I let the background sink below that to help show the fant stuff. It's only a personal thing, anyway. You've a bit of a red glow in the lower right. You could nail this in Curves by working on the relevant channels. And after all that guff I'll come to the point and congratulate you on a cracking M33! Olly Link to comment Share on other sites More sharing options...
Singlin Posted December 10, 2016 Author Share Posted December 10, 2016 Thanks for your example on setting the black point Olly. The dark skies here make me look better at imaging than I really am. I am like most of us normal mortals here in that I understand abour 3/4 of the advice given and apply about half of it. Semi improvised more than learned purpose. Link to comment Share on other sites More sharing options...
ollypenrice Posted December 10, 2016 Share Posted December 10, 2016 2 minutes ago, Singlin said: The dark skies here make me look better at imaging than I really am. You and me both... Just keep it to yourself, as I do... lly Link to comment Share on other sites More sharing options...
Singlin Posted December 10, 2016 Author Share Posted December 10, 2016 " nail this in Curves by working on the relevant channels. " Could you elaborate? Thanks Link to comment Share on other sites More sharing options...
Singlin Posted December 11, 2016 Author Share Posted December 11, 2016 Messing about with curves in the red channel haphazardly Link to comment Share on other sites More sharing options...
ollypenrice Posted December 11, 2016 Share Posted December 11, 2016 13 hours ago, Singlin said: " nail this in Curves by working on the relevant channels. " Could you elaborate? Thanks Open each channel to see which one has most of the glow in the lower right. I think it'll be red. In Cuves make a copy layer and work on the bottom one. Pin the background on a healthy part where the red is nice and even. (Alt Click with the cursor on a good bit.) Put a fixing point below that on the curve. Now just pull the curve down immediately above your first point until the bright part of the background is uniform. Restore the curve higher up so as not to pull down any stars. Make the top layer active and erase only what you need to to fix the background. Olly Link to comment Share on other sites More sharing options...
Singlin Posted December 11, 2016 Author Share Posted December 11, 2016 Thanks Olly. At the end of the season when their is a full moon I will try and book a few days with you to further my processing skills. Link to comment Share on other sites More sharing options...
MartinFransson Posted December 11, 2016 Share Posted December 11, 2016 3 hours ago, Singlin said: Messing about with curves in the red channel haphazardly Wow! Compare that one to the one you first posted. Night and day! It's a real beauty you've got there. Link to comment Share on other sites More sharing options...
Singlin Posted December 11, 2016 Author Share Posted December 11, 2016 Thanks Martin. In the Pixinsight book I have only looked at non linea processing. I carried on thereafter in photoshop. I will use these subs as my study workflow in future chapters of the Pixinsight book. Link to comment Share on other sites More sharing options...
ollypenrice Posted December 11, 2016 Share Posted December 11, 2016 5 hours ago, Singlin said: Thanks Olly. At the end of the season when their is a full moon I will try and book a few days with you to further my processing skills. Swap you for a day or two in the mountains of Italy? It would be nice to meet up. Olly Link to comment Share on other sites More sharing options...
Singlin Posted December 11, 2016 Author Share Posted December 11, 2016 No problem Olly. Feb and March we are full. We have space just after New year. In Aprill we have a couple of rooms left- Let me know it would be great. I find it difficult to get away. Our winter ski lifts open from mid October to the first of May, which means that I can't move during this period. We have plenty of space in July and at the beginning of August. The time I can get away is at the beginning of May and at the beginning of October. Link to comment Share on other sites More sharing options...
Taff Posted December 11, 2016 Share Posted December 11, 2016 Lots of details in your capture. Link to comment Share on other sites More sharing options...
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