Chris, Tom, Peter, I finally got some decent sky last night to test some of your suggestions. I spent a considerable amount of time getting Polaris to "spin"...
A type II supernova was recently discovered in the prominent spiral galaxy M51. The discovery magnitude was 13.5, which is rather bright for a supernova. For...
Hi: Has the ST80 been spoken for yet? Is there any mounting rings / hardware included? Thanks, Mike ... __________________________________________________ Do...
I have a deposit on it pending payment by Tuesday. If it does not go through, I can let you know. The 1.25" Orion V-Block filter is still available at...
Hi, I have converted my SkyView Pro mount to GOTO using a 493+497 autostar. I have noticed the resulting periodic error was much worst than the original SVP...
Are you using this in Polar or Altizimuth mode? I've used my DS- 2000 mount (Autostar 494) in Altizmuth mode only but learned quite a bit about the problems...
Hi, I am using in Polar mode. I will check Weasner's ETX site. Thanks, Andre ... De: RoboScope@yahoogroups.com [mailto:RoboScope@yahoogroups.com] Em nome de...
Andre, By doing a FFT analysis on PE, if there is a lot high frequency jitter, the problem is more closer to the DC perm-mag "toy" motor side of gears and the...
Hi, The error seems to be in higher frequency than lower. So I believe the problem seems the “toy” motor. I will make the filter mod tomorrow. Regarding...
Hi, André, Indeed you should persevere with your DS conversion. It's definitely worth doing the resistor/capacitor filter mod. And have a look at your mount...
Andre, IMHO, the "tuned" SVP is a very good mount. It would certainly support 30 second exposure. Regarding DS motor unit, the RC filter to remove the DC motor...
Hi, Have you used PEC? Did you measure the resulting periodic error ? Andre ... De: RoboScope@yahoogroups.com [mailto:RoboScope@yahoogroups.com] Em nome de...
Hi, André, Yes, I did play with PEC once. But it was quite late and I was falling asleep during the 11 minutes or so it took to run the PEC training cycle!...
Hi, I have a SVP mount with the DS motor + 497 autostar mod. I am having a lot of pain trying to adjust the tracking. The best number I have found at...
Andre, Can you swap out the RA motor with the DEC's to test it out? -78 may mean the motor is tracking 7.8% too fast. I would guess the photo diode/LED pair ...
Hi, Isn´t 7.8% too much difference ? Is it common ? I have also notice the periodic error is worse than with the original SVP motors and it also seems not...
Andre, 7.8% is pretty bad, IMHO. Both the DS motor circuit board and the 497 are using X'tal timebase and it's tracking rate is fine-tuned by 497 as a...
Is the periodic error fast or slow? If it is fast then it is in your RA motor and try swapping your axis motors to see if the problem goes away. If it is slow...
Hi, It`s too fast. I will swap motors. Thanks, Andre ... De: RoboScope@yahoogroups.com [mailto:RoboScope@yahoogroups.com] Em nome de Christopher Erickson ...
... Meade ... There is no "conversion" between the two as the Meade and Celestron hand paddles and motors are not interchangeable. The easiest approach would...
Tom, Thanks for the good information and for confirming my worst suspicion - I was hoping for a software patch. Now to the drawing board, and ... Jim Lauck ......
... suspicion - I was hoping for a software patch. ... Hi Jim, Just speculating here, but I don't think its all that bad.. IMNSHO, I think it would be...
Maybe the most painless way to go is to sell your AS-CG5 mount on Astromart after buying a Meade LXD-75 mount. I would be tempted to swap the tripods on the...
Chris - I have thought of that - now there are 47,362 + 1 ways to skin a cat (Thanks, Tom). <G> I remember that the LXD55 motors have the optical encoders...
You would also have to include the controller board that is attached to each motor - it talks to the AutoStar and has the emitter / receiver for the encoder. ...
There are complex and proprietary electronics inside each LXD-55/75 motor. There is no reasonable way to combine the two motor systems to make the job...
Also, you can reset the gear rations based upon the # of teeth in each gear. Or... you could use the gears from the Meade mount if they fit the shaft... Or......
