Hi Roland, Thanks for the info on the calibration of the altitude and azimuth screws! Most useful. I was trying to measure the movement by making adjustments while looking through an illuminated

Whoops, don't know where the word "accurate" came from. Please ignore. Marj Astro-Physics Phone: 815-282-1513 Fax: 815-282-9847 http://www.astro-physics.com

David Lane of Nova Astronomics has informed me that he has completed the telescope driver for the Astro-Physics GTO mounts. Please see additional information on our website:

Roland, Thanks very much for the info. You saved us the trouble of making the calculations. Take care great mount! Andy On the 1200 mount, the azimuth threads are 24 TPI at a 4.5" distance,

Thanks Roland! That is very helpful. -Ray

Hi all, Last night I was toying with my 400GTO hooked up to a Dell Latitude CPi. The Dell is running Win98SE and DSV 2.0.18 (I think it's 2.0.18). DSV always says the mount can not be found. _Yet_

Actually there may be a small effect when the PEC is not trained. If the gears have an error of +/- 5 arc seconds that can introduce up to a 10 arc-seconds pointing error, which is significant if you

In a message dated 1/8/01 10:29:26 AM Central Standard Time, ray@... writes: << I just used trial and error. On the elevation one-quarter turn (I think) was about 20 arc mins. If Roland

I just used trial and error. On the elevation one-quarter turn (I think) was about 20 arc mins. If Roland posts the threading on the elevation knob and the EW knobs you can calculate with Trig how

In a message dated 1/8/01 1:21:30 PM Central Standard Time, jgortatows@... writes: << For example on powerup of the mount, does it send anything out to the serial ports? >> No, only if you

Thanks Ray, One other question. After you take the six stars positions and TPoint gives you the numbers on how far off the pole you are, say 1.1 deg elevation and 34 min azimuth, How do you know how

Hi Andy, I currently use a JMI DRO focuser controlled through 100 feet of cable. However, I am planning soon to move to the RoboFocus product from HomeDome to take my automation one step

Ray, How do you remote focus the instrument? How long are your serial cables from the computer to the mount? How many TPoint targets to you take in a run for polar alignment? Thanks Andy Also, if

In a message dated 1/7/01 9:40:07 PM Central Standard Time, j.zakariasen@... writes: << m thinking that using the :U# command may help, but I'm not sure if you are supposed click the send

Hi Jerry, I don't know if the 900GTO has the same accuracy or not. Perhaps Roland will comment. Still, 60 arc seconds is very good. My first few attempts were about that accuracy. You need to press

Hi Ray, It sounds like you are using the exact software that I am trying to get a handle on! So far using T-Point I've not gotten the pointing any better than 60 arc seconds RMS. Your figure of 20

Hi Gary, Tracking is excellent on my 1200 GTO. When well polar aligned I can go unlimited exposure length with PEC enabled with my Traveler. In fact all of my H-Alpha mosaics were unguided exposures.

Thanks Jerry! I'm sure you will be extremely pleased with your 155. -Ray

Ray, excellent images of M81 and M82. From the looks of the stars it appears the AP1200 does a good job of tracking. What kind of tracking accuracy are you typically getting with the mount and the