6" Baby PowerNewt ES 152mm Achro iOptron iEQ30 QHY12 Lodestar & 50mm Borg guidescope Luck
C14 EdgeHD, C11 EdgeHD Zhumell 8" f/6 Newt AP1200GTO, CGEM DX, CG5-ASGT Rob Miller Tri36M tripod Canon Rebel XS, Atik 314L+, DSI pro I,II, QHY5L-II SX 7 FW with Astrodon LRGB, Ha 5nm Hutech OAG5, Rainbow Optics Grating Scorpio Observatory
Tak AP QSI Canon
Rob Tak EM200, TEC 140 And if the dam breaks open many years too soon, And if there is no room upon the hill And if your head explodes with dark forebodings too, I'll see you on the dark side of the moon.
Quote:It would be interesting to get Roland's take on this. Direct drive does appear to have some advantages over a traditional gear system. I would post on the AP forum if I were you.Andy
I lost count of my scopes. Now I just want mobility. I came, I saw, I bought some interesting accessories, and put names to faces: NEAF 2012, ASAE 2012, SWAP 2013, ASAE 2013.
Quote:A properly set up RAPAS is a HUGE asset to mobile astrophotography with any A-P mount.
Quote:Sorry for the potentially naive question, but on AP polar alignment, why doesn't AP's basic polar alignment routine work well enough? You set the mount approximately north, you position the scope with a star, it slews to where Polaris should be, and you adjust the alt-az; why doesn't that get you there? Is it because the mount should really be aligning on two stars and THEN pointing to Polaris? Or because adjusting the alt-az is too insensitive? Or because you need to account for a scope that is not perfectly squared to the mount?I know that I have to go back and forth many times between the star and Polaris to get reasonable alignment, but once I am done it is quite accurate (I am actually using an AP600EGTO).I am not taking images, so I don't star drift.George
Roberto Botero, Kent, UK
Tak-106, AP900GTO, Unitrons, Masuyamas
The optimist thinks this is the best of all possible worlds. The pessimist fears it is true. "J. Robert Oppenheimer"
Critical balance is not necessary for Mach1GTO or other A-P mounts. The motors are so strong that they will easily handle a badly balanced setup.
Quote:Quote:Critical balance is not necessary for Mach1GTO or other A-P mounts. The motors are so strong that they will easily handle a badly balanced setup.Peter I'm running over 110lb in a side-by side and 105lb of counterweight. I could not believe at full slew with both axis, the mount only pulls about 1.7 amps and tracking about .4 amps.. My old cgepro would be pulling near 3 amps.
Quote:Critical balance is not necessary for Mach1GTO or other A-P mounts. The motors are so strong that they will easily handle a badly balanced setup.Peter
Quote:you beat me to my edit..
Takahashi FS128, TSA 102, FSQ106N, Losmandy GM-8, Baader Mark V, Leica ASPH, Takahashi, Ethos and Panoptic eyepieces.