15-04-2020, 04:52 PM
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Moderator
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Join Date: Apr 2005
Location: NEWCASTLE NSW Australia
Posts: 33,160
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Quote:
Originally Posted by marc4darkskies
That's fine (and it's what I've done), but that only means your Xm term is zero. The Ym term will always be to the south of the pier.
Correct ... you are completely wrong!  With such a small slit opening (600mm) you can only use one scope at a time and that means you (almost certainly) have to have 2 geometries with different Xt terms - one for the main scope and one for the piggy back. I have a single 14" scope and if I had anything piggy backed it would more often than not be staring at the inside of the dome unless I used a separate geometry for it. |
OK point taken
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