Quote:
Originally Posted by OzRob
My suggestion would be not to pay any attention to the markings. They are designed for finding objects in the sky based on Dec and RA. You are much better off finding your targets visually through star hopping.
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I believe the knowledge of how to use the setting circles provided on mounts is essential for understand the basics of celestial geometry..
just like the knowledge of how to add and subtract without the help pocket calculator.... You dont do it every time but it good to know what it means.
BTW, on EQ6 (from Sinta) the design of RA setting circle (Hour angle actually) is not good because it is coupled with driving motor.. It is meaningful only if you do not use slewing (in which case it can represent RA).
But if you slew, then the hour circle must be re-adjusted again according to the target object.
This may be the reason why people do not use them because the whole issue may be highly confusing to the novices.