· Get a Cloudy Nights T-Shirt · Submit a Review / Article    Click here if you are having trouble logging into the forums Cloudy Nights - Official Forums of the 2009 International Year of Astronomy Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu.... uh, User   You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Astrophotography and Sketching >> DSLR & Digital Camera Astro Imaging & Processing Previous   Index   Next   Threaded   Pages: 1 cvedeler Carpal Tunnel Reged: 12/20/05 Posts: 2162 Loc: Scottsdale, AZ Orion SkyGlow? How does it compare?       #2090166 - 01/02/08 02:55 PM Edit   Reply   Quote Quick Reply   I've been looking at filters to help image under my light polluted skies. Reading this: http://www.samirkharusi.net/filters.html Samir recommends the Astronomik UHC filter for heavy light pollution. Of course that is a $200 filter which is hard for me to justify. The Orion SkyGlow is on sale for $58. Any ideas on how this would compare? Would I just be wasting my money or would it make a significant improvement under 4th magnitude skies? Thanks! -------------------- Chris Vedeler Astro-Physics 160EDF Astro-Physics 900GTO Q453HR / QHY8 CCD camera Canon 450XSi ---------------------------- www.aznightsky.com Scottsdale, AZ Post Extras:       ChazK Pooh-Bah Reged: 11/23/05 Posts: 1453 Loc: Melbourne, Florida Re: Orion SkyGlow? How does it compare? [Re: cvedeler]       #2090186 - 01/02/08 03:00 PM Edit   Reply   Quote Quick Reply   You get what you pay for. I'd look at the Lumicon Deep Sky as well. http://www.lumicon.com/telescope-accessories.php?iid=LF3015&cid=13&in=Filter+Deep+Sky+2in&hn= -------------------- Tak TOA 130mm/NJP Temma2 Tak FS 60CB Canon 40D (unmodded) Canon EF 28-135mm f/3.5-5.6 Post Extras:       NeoDinian Experienced Postmaster Reged: 10/05/05 Posts: 12724 Loc: Rockford Illinois Re: Orion SkyGlow? How does it compare? [Re: ChazK]       #2090276 - 01/02/08 03:35 PM Edit   Reply   Quote Quick Reply   I for one am looking at the IDAS-LPS filter... I've seen some amazing results with some images taken here and an UN-Modded cam. After seeing those results, I think I'm WELL justified. -------------------- Neo... (Jeff) -=-=-=-=-=-=- 10" LX200-GPS/SMT UHTC "Draco" Rockford, Il. NeoDinian's Eye on the Sky! Coming soon: Post Extras:       D. Perry member Reged: 09/28/07 Posts: 50 Re: Orion SkyGlow? How does it compare? [Re: cvedeler]       #2090295 - 01/02/08 03:43 PM Edit   Reply   Quote Quick Reply   Hi Chris, I wouldn't expect a huge improvement but it'll certainly help. The Orion SG filter is quite broad. It's meant to improve visual contrast in moderately light-polluted areas. It doesn't block at the IR wavelengths but that should be fine since your camera does block IR. I'd go instead with an IDAS LPS filter or something similar... but that's just me. Best, Danny -------------------- Daniel Perry www.californiastars.net Ontario, California [ 34N | 117W ] • Astro-Physics 900GTO & ATS Portable Pier • Meade 12" LX200-ACF OTA • Celestron 9.25" SCT • Takahashi FSQ-106ED • Stellarvue SV80S (Lomo super APO triplet) • SBIG ST-10XME • Canon EOS 5D MII (unmodified) Post Extras:       novbabies Postmaster Reged: 06/05/05 Posts: 15678 Loc: Northern Georgia! Re: Orion SkyGlow? How does it compare? [Re: D. Perry]       #2090944 - 01/02/08 07:29 PM Edit   Reply   Quote Quick Reply   With large amount of LP, broadband filters tend to become saturated... -------------------- Good Seeing! Mark Orion 12" XTi f/4.9 VERY old Edmund 6" f/8 reflector Assorted binoculars Post Extras:       ericjacob613 Photon Hog Reged: 05/25/07 Posts: 3754 Loc: Santa Barbara CA Re: Orion SkyGlow? How does it compare? [Re: novbabies]       #2091365 - 01/02/08 10:15 PM Edit   Reply   Quote Quick Reply   I have some comparison shots made with and without the Skyglow under light-polluted skies: http://cheapskate-astro.net/technical.html Almost every nebula shot on the site used that same filter. -------------------- "Is that boy on the moon again?" - Gumby's Dad. Post Extras:       jgraham Postmaster Reged: 12/02/04 Posts: 6760 Loc: Dayton, Ohio Re: Orion SkyGlow? How does it compare? [Re: ericjacob613]       #2091498 - 01/02/08 10:58 PM Edit   Reply   Quote Quick Reply   I have the Orion Ultra Block, Orion Broadband, and the IDAS LPS light pollution filters. The Ultra Block is essentially an H-beta O-III filter; interesting effects on some nebulae, but not useful as a general purpose light pollution filter. When I firt started using the Orion broad band filter I loved it because it was a huge improvement over using no filter at all, but I soon becam frustrated as color fidelity was hit and miss as the filter essentially pulls down all of the green and yellow. I recently bought the IDAS LPS and I've only had a chance to use it a couple of times, but my first impression is it's wonderful. It does a great job pulling down my sky glow (my maximum useful exposure with the filter is 240-300 seconds versus 30 seconds without it) and the color looks very good. Sooo, as a basic light pollution filter the Orion broad band sky glow filter is a good value, but you may have color problems with it. The IDAS LPS is more expensive (I paid $139 for the 1.25" version from OPT), but does a much better job preserving as much color as you can and still pull out the light pollution from mercury and sodium lamps. -------------------- -John ================================================ Homebuilt scopes from 4.25-16.5" Meade LXD75-N6/SN6/SC8, DSX-90, ETX-60BB, ETX-125PE, DS-2130 Orion StarBlast, BinoViewers, Coronado PST Rebel XT/XTi, DSI Pro (I, II, & III), DSI, LPI, Electronic Eyepiece, Phillips SPC900NC Tasco 60mm Refractors Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 17 registered and 16 anonymous users are browsing this forum. 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