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Originally Posted by TR
Hi Stuart,
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The guide scope is an Orion 50mm (162 mm fl) with a SBIG ST-i stuck in there. In the photo, you can see a block of carbon fibre I made that has the same radius as the Optical tube and is bolted directly to the optical tube. The guide scope is pulled into an inverted aluminium channel on the block via stainless steel hose clamp. There is no adjustment and the whole assembly it is literally part of the optical tube now. It moves with the scope – it has to. There is no flexing within its tube rings, or where the main scope mounts to the dovetail as it is literally bonded to the main optical tube. The stock focuser has been adjusted to remove any movement that I could detect by running results via CCD Inspector looking for flex in altitude changes.
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Terry
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Hi Terry,
According to my calculations that works out to be 9.4"/pixel for your guiding, is this correct?
Cheers
Stuart