Re Guider Troubleshooting


Aug 2, 2006

 


----------------------------

#25337 Aug 2, 2006

I have made some significant progress in basic guiding and would

> like to share my findings with the group. My current system

> includes a 10" LX200 Classic, with an Orion ED80 mounted on a

> homemade rail system. I am using a DSI Pro as a guide camera, an

> Atik 16HR for imaging. and MaximDL for control. Maxim is using the

> POTH ASCOM interface setup for Meade LX200 and Autostar.



Glad to hear this. I have been wondering about running Maxim via

POTH. I use an RCX.

> I have found the "Traffic" button on the POTH interface to be very

> helpful in troubleshooting guiding. The resulting window can be

> configured to show the corrections being set to the mount. My most

> recent problem was inconsistent corrections in declination.



Tell me about it......



The > guide star would slowing drift north (or south) and after a

> seemingly random amount of time, would be moved correctly back to

> zero error in one or two guide intervals (adjustments), followed by

> another random amount of time of drifting. Every attempt to

> correct this was ineffective. Gain, aggressiveness,

> minimum/maximum move times, ect had little impact. By watching the

> Traffic Window, it became quickly apparent that dec corrections

> were not being sent to the mount, except after the random time

> interval. On a hunch, I turned off simultaneous corrections, and

> viola! Corrections sent to the mount were an orderly RA / Dec

> progression. A few minutes resetting the rest of the settings and

> I think I am up and guiding:)



The mount can handle simultaneous corrections - but I read somewhere

that POTH (or ASCOM) cannot!

> I am not sure which piece of my system cannot handle the

> simultaneous corrections, but life is good without them. Seeing

> the actual adjustment commands being sent to the mount were

> extremely helpful in diagnosing my problem. Hopefully this helps

> anyone still struggling. Mark



My struggle is with the dec variation. With good alignment, I am

still finding erratic movements occur. I get a lovely straight patch

and then suddenly it drifts up or down. I cannot work out which way

is indicated for the drift; the corrections go +y at one time, but -Y

another! The suggestion of 'turn off correction in the direction

where..... whatever, does not help when drift seems to be random up or

down!



Lawrence Harris



Contact Us
This Site's Privacy Policy
Google's privacy policies

S
e
n
i
o
r
T
u
b
e
.
o
r
g