(SBIGUSER) [Q]: Autoguiding and the LX200
| Subject: | (SBIGUSER) [Q]: Autoguiding and the LX200 |
| From: | Robert Fields |
| Date: | Mon Nov 20 21:35:42 1995 |
LX200.
I do understand that a tangent arm would be more accurate than the worm
gear, and that Meade has made tremendous efforts to provide utilities to
help the LX200 DEC be responsive enough for guiding. But, I just cant
get it to work well enough to allow autoguiding.
It seems as though the backlash correction value that gives me movement
with no jump changes every time I slew the scope. If I keep it perfectly
balanced I get the star going the wrong way before going the right way
(this actually occurs with both DEC motors - I thought I had fixed it
with the one I cannabilized from my other LX200). If its out of balance
a little then moving the scope changes the whole backlash correction
picture. Sometimes Ill get a jump in one direction and not the other.
Very rarely Ill get nice smooth, responsive movement in both directions.
Then if I move the scope, everything changes.
When engaging the DEC with the ST7 doing tracking, every shot is ruined by
the DEC axis.
So here is my question:
If you have used an LX200 in Equatorial mode along with either an ST4 or
ST7 can you explain how you got it all to work properly ?
Many thanks in advance !
-Robert
