Warren - Stargazing since the 60's! Scopes: ETX-LS6, ED80T, AT6RC, Lunt LS60T, C9.25 Mounts: Atlas EQ-G, Vixen Portamount II Cameras: Atik 314L+,DMK31AU03,SSAG, ASI120MC Filters: Astrodon LRGB, Orion HA, SII, OIII Acc: Orion 5 place Filter wheels x 2, Flatman Primary Imaging site: Bortle Scale Class 6 Red Zone http://astrobin.com/users/rigel123/
Stellarvue SVR90T w/ SFF7 flattner
Celestron EdgeHD 800
Losmandy G11 / Gemini-II w/ opwb
Quote:That does look like it's going to be a lot of fun. Fantastic images Warren, I look forward to more like it. How wide a field of view are you getting with that setup? Something like 6° x 9°?
Quote:Looks good Warren and looks like fun!This is something that is on my to-do list. I have the LXD75 sitting idle and have some lenses laying about. Just waiting on me to get'r done.Steve
TEC140 APO Refractor
Losmandy G11 Gemini 2
SBIG STF-8300M, Atik EFW2 Filter Wheel, Atik OAG, Lodestar Autoguider, Astrodon 1.25" LRGB/SII/Ha/OIII Filters
Quote:Looks good Warren. How did you attach the lens to the filter wheel? Most lenses have a bayonet mount that won't attach directly to a CCD camera or filter wheel with T-threads.
Quote:Joel, the old Pentax lens does not have a bayonet mount, it is threaded, so I attached a 5 mm spacer ring from Orion to the lens and then screwed that into the filter wheel. I have quite a bit of play between where the lens is at infinity and where it actually comes to focus, and it held focus without any difficulty.I'll see if I can set it up tomorrow and take some shots with it out of the Steady Shot Bracket and do some measurements so everyone can see the actual setup.
At the dark side of art, J-P Metsavainio, Finland LX200 GPS 12", SkyWatcher ED80, Canon 200mm EF f1.8L, Tokina 300mm AX f2.8, SXV-AO, QHY9, QHY8, QHY5, Lodestar BLOG:http://astroanarchy.blogspot.com/ IMAGE PORTFOLIO:http://astroanarchy.zenfolio.com/ FACEBOOK: http://www.facebook.com/jp.metsavainio
Quote:I set the lens at f5 as the stars really looked bad with the iris wide open.
Quote:Quote:I set the lens at f5 as the stars really looked bad with the iris wide open.Warren,Can you describe what the stars looked like at faster f-speed? Do you think the adverse stars were the result of too much curvature with the iris wide open?
SkyMonsters - http://www.skymonsters.net
GSO RC8/Takahashi FSQ85ED Canon 450D/QSI583wsg
Takahashi EM-200 GEM/Vixen Super Polaris
Its true - in any hobby - that someone can do things better than you. However, not to do something because you aren't the best would ignore the value and satisfaction of the journey.(TimN)
254mm f/2.8 Customized Carbon Fibre Astrograph; 127mm Omegon Triplet with Moonlight Focus;
TS Optics 80x20 Apo Binoculars; Celestron CGEM; Atik 490ex Mono; QHY5L ii
Quote:Heh, heh, I have the same problem. When we get a clear night in the forecast I start debating which equipment to get ready. It's a nice problem to have.