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Old 17-10-2014, 11:38 AM
PeterEde (Peter)
Prince Planet

PeterEde is offline
 
Join Date: May 2013
Location: Albert Park, Adelaide
Posts: 694
Problem?

The first night I had it set up I went straight to 2 minute exposures.
The for some reason I thought I'd revisit collimating again.
I checked again yesterday. The centre of the polar scope hardly moves off centre.
But the last 2 nights I've only managed 1 minute exposures. Why?

Over loaded mount? 2 cameras
Pointing west so going with motor instead of against?

At 2 minutes I'm getting enough elongation to drop back to 1 minute via trail and error.

Rechecked mount alignment and the octans stars are where they should be.

Good to write things down. I think I see my problem.
I balanced for one camera. 2nd piggy back? causing more noticeable backlash from RA motor/gear?
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