Re: [APML] OT: St-4 -help!

You are welcome Ivan,

you said it aplays increase time to second corection aswell, so I presume you mean on the both directions in Dec. Is it really wrong ? I think it has to aply same correctin time for both directions in Dec.

Radek

-------Original Message-------

From: Discussion of Film Astrophotography

Date: 09/19/05 14:25:00

To: Discussion of Film Astrophotography

Subject: Re: [APML] OT: St-4 -help!

Radek,

Thanks for the tips.

Yes, I know the problems coming from the gearbox. I'm planning to buy a

SkyScan upgrade, but still I'm waiting for an upgradeable (via internet)

version.

I absolutely know how my mount works, since I guide it manually for 2

years. It has the same rough (and big +/-20") periodic error, and huge

backlash (about 1.7 sec). I tried to set backlash (H2 parameter) to

different values, but the problem does not disappeared. While st-4 worked,

I simultaneously watched the guide star through the main optics, so there

were no backlash overcompensating, or similar setting problem. The st-4

every time (after direction changing) applied the increased time to the

second corrections also, I don't know why.

Maybe the SkyScan upgrade will solve the problem, and i will not need

backlash compensation anymore.

Thanks again,

Ivan