Re: [APML] Guiding a TV-85 on a GM-8 with an ST-4

["Chris Cook" <ccjd@ix.netcom.com>]

Hi Alan -
I use my ST-4 on a Vixen 60mm f/11 refractor which is on a G11.  Here are my
basic settings.

Drive rate = .5x  I calibrate at the same.

EA = depends try and get a value of between 30-60 on the ST-4

B = depends

SA = usually 5

FL = S

C1 = 18

C2 = 18

H1 = 0

H2 = 0

AA = usually 3 to 5

AL = 3 or 4

Print off and read Jim Janusz's article on the ST-4.
http://www.abmedia.com/astro/articles/st4.html

You should be getting 0's 1's, 2's and 3's at the most at the FL you're
using.

Chris

----------------------------------
Chris Cook
Astronomical & Nightscape Photography
www.abmedia.com/astro


-----Original Message-----
From: Alan Voetsch <critter12952@yahoo.com>
To: APML <astro-photo@seds.org>; Group Losmandy <Losmandy_users@egroups.com>
Date: Tuesday, May 20, 2003 1:54 PM
Subject: [APML] Guiding a TV-85 on a GM-8 with an ST-4


>Hi all,
>
>Sorry for the double post but I want to reach as many who use this
>combo as possible.
>
>I was able to setup my scope, mount and get it guiding with an ST-4
>last night. The mount and ST-4 are new to me so I was rather amazed.
>They appear to work well together. The ST-4 is on a 70mm f/10
>guidescope. What I'd like to get is feedback on optimising the ST-4s
>settings for this setup. I am using it as a standalone guider. I
>believe I had the tracking rate on the GM-8 set at 0.5X, any other
>suggestions?
>
>Most readings were: -1, 0, 1, 2s, -2s with an occaisonal 5, 6, and even
>a 9 thrown in once. 3 times during the 1 hour test, the ST-4 beeped a
>time or two, gave brightness and location readouts, then continued
>guiding. Any comments?
>
>Thanks,
>Alan
>
>P.S. If any of you also use the ST-4 on say a 12" LX200, I could also
>use some suggestions on settings for that scope. That will be through
>an off-axis guider.
>
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