You are not logged in. [Login] Forum Archives · Entrance · Main Index · Search · New user · Who's Online FAQ · Calendar Observing >> Solar Previous   Index   Next   Threaded   Pages: 1 8buck member Reged: 02/12/09 Posts: 84 Loc: Idaho Is an H-Alpha filter just an eyepiece filter?       #3358573 - 09/26/09 08:09 PM Edit   Reply   Quote Quick Reply   i'm just gettin started here and I have know idea how these are used. -------------------- NexStar 1100 GPS (EPs Celestron 22mm - Celestron Plossl 32mm) SOUTHEASTERN IDAHO Post Extras:       Don W Demi-God Reged: 05/19/03 Posts: 15138 Loc: Wisconsin, USA Re: Is an H-Alpha filter just an eyepiece filter? [Re: 8buck]       #3358589 - 09/26/09 08:23 PM Edit   Reply   Quote Quick Reply   No, an H-Alpha filter is a system of filter elements that usually go on the objective end of the scope along with other elements in the back end. -------------------- Don Wyman Obsession 18" f/4.5 #1166 W/Argo Navis DSC and Torus Primary Post Extras:       molniyabeer Confused and Asleep Reged: 01/08/05 Posts: 2985 Loc: Central Coast, California Re: Is an H-Alpha filter just an eyepiece filter? [Re: Don W]       #3358842 - 09/26/09 10:51 PM Edit   Reply   Quote Quick Reply   There are eyepiece h-a filters but they are NOT for solar viewing (even if used with a front-aperture white light filter). They are used for deep sky photography of nebulae. The h-a filters used for the shots in this forum are dedicated systems that pass a much smaller sliver of the spectrum than the eyepiece filters. -------------------- Steve 16" Meade LightBridge (Beowulf) Lunt 60/50 Double Stack w/ Pressure Tuner 10" Hardin DSH, StarMax 127mm Mak Oberwerk 11 x 70 binocs Four Winds Bar Santa Maria Clear Sky Clock Figueroa Mt Clear Sky Clock Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 16 registered and 11 anonymous users are browsing this forum. Moderator:  Don W, spaceydee  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 221 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events*Equipment Discussions* -----   ATM, Optics and DIY Forum   Binoculars   Binoviewers   Cats & Casses   Classic Telescopes   Equipment   Eyepieces   Mounts   Observatories   Reflectors   Refractors    Celestron SkyScout and Meade mySky   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   General Observing   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*Other* -----   Science of Astronomy & Space Exploration   AstroWebsites   Space Rocks*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties   Light Pollution*CN Feedback and Vendor Announcements* -----   Vendor and Group Announcements*International Year of Astronomy 2009 - Forums are now closed.* -----   Global Coordination   Cornerstone Projects   Special Projects   Special Task Groups   Global Activities   National and Regional Activities   IYA 2009 in Africa   IYA 2009 in the USA CN Forums Home

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