You are not logged in. [Login] Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar

Astrophotography and Sketching >> CCD Imaging & Processing Previous   Index   Next   Threaded

Pages: 1 AstroGabe sage Reged: 01/10/10 Loc: SE Wisconsin Cygnus widefield       #5294007 - 06/28/12 09:52 PM Attachment (20 downloads) Edit   Reply   Quote Quick Reply   Here's an image of Cygnus in HaLRGB. The lens I used was the 55mm Nikon lens mated to an ST8300 + FW5-8300. The lens goes to f/1.8, but the quality of the stars suffered at the corners. Even now, it's not great at the corners. Also, polar alignment wasn't great, so some amount of field rotation is visible. Overall though, I'm pleased with the result. Link to HQ version: http://www.flickr.com/photos/astrogabe/7462274498/in/photostream/lightbox/ Let me know what you think. Gabe Imaging scope: Nikon 55mm f/1.8 Lens set to f/4 Imaging Camera: ST8300M (capture with Equinox Image) Filters: Baader filters in FW5-8300 filter wheel Guide scope: Astro-Tech 106mm Triplet Guide camera: Starfish Fishcamp (guided with PHD) Mount: Atlas EQ-GCalibration and processing in PixInsight. Synthetic luminance from all frames LHaRGB: L: 20x1min (1x1) Ha: 16x5min + 6x3min (1x1) R: 10x1min (1x1) G: 10x1min (1x1) B: 10x1min (1x1) Post Extras:       AstroGabe sage Reged: 01/10/10 Loc: SE Wisconsin Re: Cygnus widefield [Re: AstroGabe]       #5294009 - 06/28/12 09:53 PM Attachment (9 downloads) Edit   Reply   Quote Quick Reply   Here's the H-alpha only version as well. More detail to be seen here. Gabe Link to HQ version: http://www.flickr.com/photos/astrogabe/7462260026/in/photostream/lightbox/ Post Extras:       rigel123 Postmaster Reged: 06/29/09 Loc: SW Ohio Re: Cygnus widefield [Re: AstroGabe]       #5294027 - 06/28/12 10:03 PM Attachment (7 downloads) Edit   Reply   Quote Quick Reply   That's great Gabe! I think I'd like to just use the HA as the luminance with all of the detail that is in there, it looks like a bit of it was lost when combined. Hope you don't mind, I couldn't resist trying that and here is what it looks like if you use the HA as the Luminance channel and then boost the colors back up. What is really cool about your image is being able to see all of the famous nebula, North America, Pelican, Veil, Tulip, Crescent, etc and where they are located relative to each other! Edited by rigel123 (06/28/12 10:28 PM) Post Extras:       AstroGabe sage Reged: 01/10/10 Loc: SE Wisconsin Re: Cygnus widefield [Re: rigel123]       #5294180 - 06/28/12 11:54 PM Edit   Reply   Quote Quick Reply   Thanks Warren for the kind words. I don't at all mind. I had a version where I included the Ha as luminance, but the colors in the end were way off. More of the usual salmon color. I appreciate your suggestion. I should go back and see what I get. How did you tone back the salmon color in your processing? Gabe Post Extras:       NorthBoundTrain Carpal Tunnel Reged: 11/23/11 Re: Cygnus widefield [Re: AstroGabe]       #5294304 - 06/29/12 02:05 AM Edit   Reply   Quote Quick Reply   Came out very well Gabe! Post Extras:       atalas Carpal Tunnel Reged: 02/21/05 Loc: Sydney,Australia Re: Cygnus widefield [Re: NorthBoundTrain]       #5294355 - 06/29/12 04:46 AM Edit   Reply   Quote Quick Reply   Nice shot Gabe....on Ha blending,blend into the red channel and keep an eye on the detail coming through(generally I'm happy with 50/60%)then do the same with you Ha to Luminance. I don't hit these hard when stretching because that will effect your saturation and you'll end up with colors that aren't pleasing. I don't sharpen the mono either but I do like to do some contrast work their before combing the new L/Ha or,super luminance If you like to call It that...this works great for me. Post Extras:       rigel123 Postmaster Reged: 06/29/09 Loc: SW Ohio Re: Cygnus widefield [Re: AstroGabe]       #5295573 - 06/29/12 09:51 PM Edit   Reply   Quote Quick Reply   Quote: Thanks Warren for the kind words. I don't at all mind. I had a version where I included the Ha as luminance, but the colors in the end were way off. More of the usual salmon color. I appreciate your suggestion. I should go back and see what I get. How did you tone back the salmon color in your processing? Gabe To get the color back I convert the image to LAB mode and then pump up both the reds and blues. Convert it back to RGB and then use Selective Colors to balance the Red to a tone that is more pleasing. Changing the image to LAB mode allows you to increase the colors without changing the other characteristics of the image. Post Extras:       Pages: 1

Previous   Index   Next   Threaded

Extra information 25 registered and 15 anonymous users are browsing this forum. Moderator:  Oldfield, bilgebay  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 340 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Celestial Events*General Astronomy* -----   Beginners Forum   General Observing and Astronomy   Outreach   Light Pollution*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Video and Electronically Assisted Astronomy*Astrophotography and Sketching* -----   Beginning and Intermediate Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   NEO   Planetary and Solar System Observing   Lunar Observing   Deep Sky Observing   Double Star Observing   Solar   Variable Star Observing and Radio Astronomy*Telescope Specific Forums* -----   Celestron NexStar    NexStar GPS / CPC Telescopes   Questar Forum   Meade ACF/RCX / LX / GPS    Meade ETX*Speciality Forums* -----   Arizona Science and Astronomy Expo   NEAF (Northeast Astronomy Forum) and NEAIC (Northeast Astro Imaging Conference)   AstroArt   Astronomy Clubs and Star Parties   Astronomy Software & Computers   AstroWebsites   Science! Astronomy & Space Exploration, and Others   Space Rocks   Stellar Media*Swap and Shop* -----   Shop and Swap Audio Components*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   IYA Archive Info

CN Forums Home