[net.astro] Questions on Best Telescope Drive

rld@druxy.UUCP (12/10/83)

I have several questions that hopefully someone on this
net may be able to answer.

Given: 
	The following drive is for a 10" f8 Newtonian type
	reflecting telescope.

	One Equatorial (German type) Drive
		-  screw drives worm gear of 91 teeth
		-  91 toothed worm gear drives second screw
		-  second screw drive worm gear of 247 teeth
		-  247 toothed gear drives Polar Axis (PA)
		-  All worm gears advance ONE tooth per revolution
		   of the driving screw
		-  Overall gearing of above is 22,477 revolutions
		   of 1st screw to 1 of PA

Requested:
	What is the suggested drive for 1st screw that will allow
	accurate tracking for visual and relatively short exposure
	photographic operation?

	Would a constant speed motor geared to the appropriate
	revolutions be obtainable and if so, from where, or would
	a variable speed motor be a better choice?

	Are there any good interfaces to inexpensive computers or
	other automated tracking systems that would permit entering
	of a set of coordinates to cause the telescope to track
	that section of the sky?

Response:
	taken in any form I can get.
		US Mail			R. L. Ducharme
					9340 W 82nd Ave
					Arvada, CO 80005

		Mail			druxy!rld


				Thanks in Advance

				** Robert Ducharme **