Subject: Simple and accurate polar alignment procedure Sent: Friday, July 15, 2005 07:39:02 From: Dave Stone (email@example.com) It's been quite a while since I last sent you anything. I've been working on a new Polar alignment procedure, one that it very quick and should result in an accurate alignment. I'm hoping to get a few people with wedges to try it out and offer feedback. If you think it's worthwhile, could you please post this on the ETX site? Thanks, Dave ------ The following procedure should work with any GOTO scope. You can also perform the steps using a non-GOTO scope which has accurate RA and DEC circles. This procedure is for the Northern Hemisphere only. 1. Align the scope on the wedge so that you're aligned directly on Polaris (the OTA is pointing straight away from the base). It's very important that the tripod be level and the scope is at 90 degrees and that Polaris is dead center. A reticle eyepiece is helpful here. 2. Go through the normal polar alignment procedure. 3. Once aligned, goto coordinates RA 2:31, DEC 88d 30m. 4. Using the tripod and wedge controls only (do *not* move the OTA with the hand control) re-center Polaris in the eyepiece. The tripod and base should now be accurately polar aligned. You will have to re-synch the alignment stars. If that doesn't work, you have to re-start the alignment procedure from the current tripod position (use the declination circle to set the angle of the tube back to 90 degrees; don't point the tube back to Polaris). This procedure isn't perfect, but should get you very close to alignment on the NCP. If you give it a try, please send feedback to firstname.lastname@example.org and let me know.
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