#21  
Old 24-07-2013, 05:43 PM
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avandonk
avandonk

avandonk is offline
 
Join Date: Aug 2005
Location: Melbourne
Posts: 4,786
I use a Lodestar as a guider. I bin it x2 as recommended. The guide optic is a Tal finder with a FL of 187mm.

The RMS error is typically about 0.05 pixels or less. This equates to an error in guiding of less than one second of arc.

I use about a two second exposure to minimise the chasing of seeing.

End of story!


Bert
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