ARCHIVE · Login   · Main Index   · Search Astrophotography and Sketching >> CCD Imaging & Processing Previous   Index   Next   Threaded   Pages: 1 zuan_furlan member Reged: 08/31/04 Posts: 60 TOA130S Vs. Epsilon 180?       #2056359 - 12/17/07 06:26 AM Edit   Reply   Quote Quick Reply   Hi all, considering deep-sky imaging with a SBIG STL11000 CCD camera, which is the best mate among a Takahashi TOA130S (+ field flattener) and a Takahashi Epsilon 180? Thanks Post Extras:       Dean Postmaster Reged: 12/31/04 Posts: 5431 Loc: Bailey Co Elev 8780 feet Re: TOA130S Vs. Epsilon 180? [Re: zuan_furlan]       #2057282 - 12/17/07 04:23 PM Edit   Reply   Quote Quick Reply   The focuser on my E180 will sag a bit with the STL11000 if the camera is to the side when I tighten down the camera rotator without lifting it a bit. The E180 is very touchy, and it doesn't take much at all to get distortion in the corners of the STL11000. Focusing the E180 by hand is pretty tough too - doable, but the smallest turns I can make by hand make a pretty large difference. I wouldn't expect a TOA130 to be near as fussy. The E180 has a FL of 500mm and the TOA130 is 1000mm, so the resulting FOV is going to be quite different, so I would tend to consider that first. If you plan on shooting Ha with the STL11000, the the E180 has an edge there as the STL11000 is pretty weak in Ha. -------------------- "Don't sweat the petty things and don't pet the sweaty things" - George Carlin deanrowe.net/astro Whats with that avatar? Post Extras:       Jim Lafferty Carpal Tunnel Reged: 06/30/07 Posts: 2464 Loc: Southern California Re: TOA130S Vs. Epsilon 180? [Re: Dean]       #2058127 - 12/17/07 11:01 PM Edit   Reply   Quote Quick Reply   Before I sold my stl-11000 I used it for a bit on my TOA130 (2.7" focuser). I was never satisfied with the amount of vignetting (both with and without a flattener or a reducer) and learned later that you really need the 4" focuser model for that camera. There was never any issue with the 2.7" focuser being able to handle the weight of the stl-11000. So....if you're going to get a TOA and use the stl-11000 with it get the 4" focuser model. Regards Jim -------------------- Jim Lafferty Southern California Author of "Imaging Our Sun" -The Book Lunt LS100Tha/B3400 w/FeatherTouch Focuser Coronado SM 90/DS/BF30/BF15 w/Moonlite Focuser Explore Scientific 127mm Triplet APO Explore Scientific 80mm Triplet APO Lunt Solar Wedge DMK41 CCD camera Takahashi NJP Temma II mount Losmandy GM-8 mount Losmandy GM-11 mount POD XL-5 http://scopetrader.com/jimlafferty Post Extras:       Pages: 1 Previous   Index   Next   Threaded   Extra information 0 registered and 47 anonymous users are browsing this forum. Moderator:  Oldfield, Suk Lee, Charlie Hein, knuklhdastnmr  Print Thread Forum Permissions       You cannot start new topics       You cannot reply to topics       HTML is disabled       UBBCode is enabled Thread views: 833 Jump to *Announcements and News* -----   Cloudy Nights Announcements   Discussion of CN Articles, Reviews, and Reports   Beginners Forum   Celestial Events   Light Pollution*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 Imaging   Film Astrophotography   DSLR & Digital Camera Astro Imaging & Processing   CCD Imaging & Processing   Solar System Imaging & Processing   Sketching   Astro Imaging/Sketching Contest *Observing* -----   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   Pets   Cloudy Days & Microscopes   Gardening   Audiophiliacs   Cameras & Photography   AstroWebsites*Speciality Forums* -----   AstroArt   Astronomy Software & Computers   Stellar Media   Astro Outreach, Clubs and Star Parties*CN Feedback and Vendor Announcements* -----   CloudyNights Feedback   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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