Scopes: 190mm SW Mak-Newt @ f/5.3 & 90mm SV Raptor Triplet @ f/7Cameras: Atik 383L+ mono w/ EFW2 FW with Astrodon filters & Canon XSi 450D (Modded)Mount: Astro-Physics Mach1GTO mount guided with QHY5 KWIQ guiderSoftware: Sequence Generator Pro; PixInsight; Photoshop CS5Best investment: Stone Garden Observatory - Bortle 4 (Green)
Terry Danks Photography: Birds, Scenery, a little astrophotography too. http://danks.netfirms.com/home.htm Equipment List: Too embarrassed to list it all. Roll-off-roof Observatory Constructed Fall, 2013
Paramount MX AG Optical 12.5 IDK Apogee Alta 16803 AstroDon Series 2 E LRGB AstroDon Ha 5nm SII 5nm OIII 3nm SBig Sti ACP observatory control, ACP Scheduler PixInsight, Maxim DL 5, My Images http://www.remarkableheavens.com/
I have a set of Astrodons: 5nm Ha and SII, and a 3nm OIII -- all 36mm unmounted. I have pretty dark skies, but like you have to deal with moonlight, with snow reflection through much of the best imaging season. Cons: expensive! Pros: I can image in full moonlight throughout the imaging season so basically any clear night is available. I previously used a set of Baader narrowbands. I could shoot Ha and SII with a moon (although I had to pay more attention to position of my target relative to the moon); shooting OIII with a moon was difficult (that's why I went for just the 3nm OIII -- it's the most susceptible to moonglow). Still you can make them work just fine: shoot Ha and SII with a moon and save your OIII for darker conditions. As someone said when I asked for advice "Get the best you won't loose sleep over".
Quote:Please let me know where you found an Astrodon 36mm, 3nm, OIII filter? Don told me he had no plans of making one.
22" and 14" Dobs on EQ platforms and Deep Sky Observing
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AP1200GTO/AP1600GTO LTE/AP Mach1 16" Starizona Hyperion on order 14" LX200R & 7" Meade Mak FSQ106ED Tak .75 reducer +1.6 extender Coronado 90mm DS BF30 PST Lunt 60 PT FT Lockwood 12" f4. mirror set in a box AT6RC / AT12IN/ CT152 achro WO ZS66 / WO 80mm Doublet SBIG STF8300M CFW8/OAG/ Baader inside STT8300M FW8SG Astrodon inside Hutech 5DII 5D MkIII 60Da 6D 16-35mmL, 24-70mmL, 70-200mmL, 300mmf4.L, 400mmf5.6L, 100mmf2.8L, 50mm f1.2L, 135f2. 10'x14' ROR