ROR Observatory Levenhuk 8" carbon fiber RC, Astro Physics CCDT67 Astro-Tech AT8IN w/Moonlite, Baader Mark III MPCC Levenhuk 80mm triplet, Astro Tech 0.8X reducer/flattener Celestron CGEM DX w/HyperTune STF-8300M SX 7 position 36mm CFW Astrodon 5nm H-alpha Little Piney Observatory
Quote:Given the OPs parameters of use I think a 65mm refractor will be a big disappointment for the other 2 people who will also be using whatever he buys. I suspect they may actually want to look through the scope.
But, for scopebuggy transport, outdoor shed storage, ease of use for observers with limited mobility, visual and AP capabilities, I think the SCT wins hands down.
Besides, that's the one his girlfriend wants.
Quote:Mike, I take it you know the OP?
http://www.astrobin.com/users/budman1961/ Meade LX3 8" OTA/IEQ45 Mallincam HyperPlus Color, QHY5L-II Mono Orion Mini Finder/Guider
Adam AP Mach 1, Rob Miller TRI36L, Celestron 8" Edge HD Hyperion 17mm, Celestron 40mm Plossl, TMB 7mm & 9mm WO 66, Lunt LS60/B1200 PT, CG-5 Clone STF-8300m Pro Package, Honis-Modified Canon XS, Un-modded T1i, SSAG, TSOAG9, SX LodestarLackawanna Astronomical SocietyMy Astrobin
Quote:Why is a SCT a bad choice for AP?
Craig H. Scope: Celestron C8-NGT (f/5 8" Newtonian); AT65EDQ Mount: AP GTO Mach1 Imaging: Nikon D40 unmodded/Canon XSi (450D) self-modded w/Baader MPCC Guiding: 9x50 viewfinder with Orion SSAG & PHD Capturing/focusing: Backyard EOS Processing: DSS & PixInsight "I've lived all my life/On planet Earth" -- Devo
Quote:Regarding an SCT bad for starting AP. I sort of agree. I started with an 8' SCT wedge mounted because that's the scope I already had. I depends on the type of imager he plans on using. I started with a meade DSI II pro. The benefit of a small chip camera are the fact you can use the 3.3 focal reducer and the camera are a lot cheaper. The 3.3 focal reducer will provide decent FOV and pretty fast optics for DSOs. The larger aperture will allow for higher magnification for planets. I think it's a fair balance for a single scope that is going to be used both visually and for AP.
Scopes: Celestron 8" SCT, Explore Scientific 80mm Triplet Apo, Bushnell 7x35 Binos Mounts: Celestron Advanced VX, Celestron SE Cameras: QHY9M CCD, Canon 4Ti (650D), QHY5L-II (Color) Eye Pieces: Explore Scientific 82* 30mm EP, Meade 8-24mm Zoom, University Optics 9mm Orthos, Cheap EP kit Barlows: 2" 2x GSO, Tele Vue Powermate 5x Filters: Badaar 2" LRGB+Ha, UHC, Moon, Orion Sky Glow AP filter, AstroZap Baader Solar Filter.
Quote:If you are using PHD guiding, I suggest you also use it for polar alignment. It makes polar alignment ridiculously easy and quick to do. Let PHD do it's guiding setup routine near the meridian. Once it's guiding, tell it not to correct for DEC. Switch the graph to DX-DY. You will see the DEC line on the graph drift one side. DO a correction for east-west and start guiding again. Rinse and repeat till the DEC line is flat. Now point the telescope to either the west or the east at a low point over the horizon. Again let PHD do it's setup routine and then tell it not to correct for DEC. DO a correction for north-south and start guiding again. Rinse and repeat till the DEC line is flat. In less than 20 minutes you should have the mount perfectly polar aligned.