Quote:I've already posted my "procedure" before, but I'll be happy to do it again.
woody a parsec farther out...
12.5" f/4.8 custom truss dob, EQ platform
Quote:Extensive detail, semantics, or analysis of fairly obscure problems can still mystify me, leaving me temporarily dazed and confused - because of my relative inexperience compared to the experts.
400mm f/4.46 self made Dobsonian on Tom Osypowski equatorial platform Skywatcher 130mm f/5 BlackLine (finder, widefield scope and solar continuum scope) Sumerian 250mm f/4.8 Alkaid (as travelscope without platform and on Tom O. platform above).
DON'T PANIC!-Hitchhiker's Guide to the Galaxy Don Wyman
Mike "Once in a while you can be shown the light In the strangest of places if you look at it right" - Robt. Hunter
Webster 14.5" f/4.5, "Sugaree" Televue NP 101 (name not yet apparent) Siebert Black Night BVs 8 X 42 Celestron Regals, 12 X 36 Canon IS II
Quote:2. Check the focuser for perpendicularity to the tube axis.
Quote:Quote:2. Check the focuser for perpendicularity to the tube axis.What is the best way to do the above?
Homemade 14.5" f4.3 Truss Dobsonian
"I'd like to remind you at four in the morning my world is very still, The air is fresh under diamond skies, makes me glad to be alive." Randy Bachmann "Blue Collar"
“A mind is like a parachute. It doesn't work if it is not open.” ― Frank Zappa
Quote:Wow, I hope this is a much easier process in practice than it is reading how! When I get my dob, I want to spend my time looking at the sky, not collimating the darned thing!
Quote:...My question, does that sound right, shouldn't the secondary be dead center or as long as I can get the laser dead center both on the primary and on the return beam good? Am I missing something or over thinking this?
Jim Fly - Manufacturer
Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:I bought an 6.5" Maksutov-Newtonian and I would like to know if the instructions by Vic about collimation can be applied for my telescope in a general way.
Quote:In fact I want to know first if my telescope is collimated or not.
Quote:...Here in Mexico City I have had cloudy nights everyday, but I´m sure that this mak-new telescope is discollimated because I can see that the secondary was turned during the transport...
Quote:Does the secondary mirror can be aligned in axial way but not can be rotated?...
Quote:You had to move all the meniscus, so I suppose that the secondary does not have independent movement.
Quote:When you say about aligning the corrector axis to the focuser axis if I understand well, there is only a right position to left the meniscus lens. If only the meniscus lens is turned and the secondary not ( the secondary keeping his right position), this is going to affect the performance on this kind of telescope?..
Quote:Sorry for so many questions. The collimation seems to be something harder that in standars newtonians.
Quote:Vic, I posted in the wrong place, I'll try this. Do you have a link to Tectron, I have been unable to find their website for the Infinity XL Autocollimator and Cheshire. Thanks
Modified Megrez 90 FD with digital motorized Feather touch focuser Vixen GP DX partially regreased with Superlube Astro Electronic FS2 Atik 314L+