Quote:
Originally Posted by multiweb
When you're imaging the tarantula there's always a period of time where your counterweight bar is vertical so when your RA worm lost its preload your mount will oscillate within the backlash until it's on an angle again and the worm rests on the other side of the spur gear.
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Marc,
Just following in from your advice, I was imaging the Tarantula last night in Sydney
Started imaging the nebula at 33 degrees Alt , guiding was good at 0.80 arc sec total , improved to 0.70 at 40 degrees and ended up at 0.63 at 47 degrees , stayed excellent until high cloud rolled in around 1.30am and called it a night
My Skywatcher mounts, years ago with the HEQ5 (both main and worm gear driven ) and in the last 3 years with my two EQ6-R mounts ( belt and worm gear driven ) at both Sydney and South Coast have always guided well near the south meridian / SCP.
Just thought I’d mention my experiences
Cheers
Martin