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Quote:....Dwight, You mentioned that with your previous (pre TDM) setup you were getting "round stars", so aside from the cool graph, more good subs (which should mean less time on a subject), and I assume shorter setup time, can you describe the difference in your images with the TDM?
G11/Gemini-2/OPWB Canon 60D (unmodified) with 18/55mm kit lens and "nifty fifty" lens Assorted M42 screw mount lenses (28mm thru 300mm) Celestron 102GT refractor (Costco special) 8/10 inch astrograph someday. DeepSkyStacker 3.3.2 StarTools 1.3 http://www.astrobin.com/users/StarGale/ http://everettastro.org/
Quote:Question... Does the device use the autoguide port? If so, could you autoguide if you wanted to? Looks interesting indeed... Joe
Quote:Hi Dwight,You mentioned you did not try PEC with the TDM. Is that even possible?Also, would you say the best candidate for TDM is a solid mount with minimal axis-orthonality and flexure issues, and not so much whether it has low PE?Thanks,Gale
Quote:So if you give up the polar scope a 3k mount is a 10k mount Well, 3k+2K for the TDM... Joe
LX850 blog: www.LX-850.com
personal website: www.wadsworthobservatory.com
Paramount MX in Sirius 2.3m Dome TMB 92SS, Atik 383L+ (Mono), EFW2, OAG, AT2FF, DSCI2 Astronomik LRGB + NB, Hutech IDAS Filter www.flickr.com/photos/tomodoran/
Quote:Thanks for sharing Dwight. I'm thinking about one of these for my CGE.I noticed you said you got 0.4 arc sec for your polar alignment. This is absolutely AMAZING! How did you do that?Cheers,Tommy
Quote:Outstanding Dwight.Thanks for all info. Just one question...what worm do you have fitted...the older, newer high precision or the new adjustable or the Ovision?
Quote:I have the standard worm that came with the mount 5 years ago. No upgrades or adjustments to it.
Quote: Quote:I have the standard worm that came with the mount 5 years ago. No upgrades or adjustments to it. If you were to upgrade to the high precision worm, or even the OPWB, and improve your PE from 14 arcsec p-p to 7 arcsec p-p, is it likely your PE with TDM may improve to 1 arcsec?Gale
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
------------------ Mert 42º49"N 1º38"W 3" Polarex refractor,6" F12 SW MCT,Moonlight "Stepperized" EQ6 + EQMOD,SPC900NC/DFK21AU04.AS/ASI120MC My web-page Still working to make it decent!
Quote:Thanks for the pictures and the description Dwight! I wonder though - which would be the way to go to save a CGEM from an increasingly likely mount replacement, the TDM (assuming they make an adapter for it yet) or Adaptive Optics? They are both in the same price range, and both offer much better performance than the mount is capable of natively. I'm not sure that the CGEM's gearing is good enough to make use of the TDM's corrections, which would seem to give AO the edge.