Dark Arts Observatory - Brockport, NY - Skyshed POD XL5 with iOptron iEQ45 Mount
Scopes: C8, C5, SV110 ED, EON-72 ED, ST 80, ATRC6, Megrez 90
"Life is a journey, enjoy the ride" *********** Stellarvue 90 Raptor CF.Explore Scientific 152mm Comet Hunter.Orionx14g.Borg 125SD.Borg 60ED. Borg 50Achro. AT10RC. AT6RC. iOptron iEQ45GTN w/TDM.iOptron ZEQ25.iOptron Cube Pro.iOptron MT Pro/iOptron SmartEQ Pro.Celestron 10x50 Way too many EPs, flatteners and reducers. Nikon D5100, Canon T3i and a bunch of filters.
Quote:When the mount is acting up is a slew back to an alighnment stare accurate?
Quote:> is there anything I can doIt doesn't solve your actual issue, but you can bypass it completely by doing plate solves and syncs. (Providing you have a computer involved in your imaging.)
Quote:Hi shakafell:It is odd that tow targets so close to M2 and M30 would be off. I wonder if the iEQ45's coordinates for some targets are wrong. Have you tried using software such as Stellarium to drive the mount's gotos?-Dan
Quote:Perhaps Alignmaster is affecting the polar offset routine? I'm assuming you're moving the mount in az and elevation to center on Alignmaster stars? Try just using the excellent polar scope, with a well leveled mount, without excess cone error...it will get you to under 10 arc minutes out of the gate. Using the 2 star aligns to dial it in to 1 arc minute or less will always result in perfect go-to's (on my mount). And, it should not take you more than 2 or 3 iterations of the routine to get to a polar offset of '00-00'. Just a thought...I've never used Alignmaster, never had to with the iEQ45.One more thing, check iOptrons support page and make sure you have the latest firmware loaded up, there have been some changes.Cheers,Paul
Orion 190mm Mak-Newt iOptron iEQ45 - Modifications http://www.the3dwizard.net/index.php/astronomy/ieq45 Orion 80mm ST or 50mm Mini guider Orion StarShoot AutoGuider or QHY5L-II Canon 60D (modified by Brent Oliver) BackyardEOS, Sequence Generator Pro
Quote:I have some more questions too. The manual clearly states that performing One Star and Two Star alignments will improve goto accuracy. But someone told me that the mount doesn't actually do anything with the Alignment information other than display the error for you, and that the accuracy is determined solely by the polar align. Is this true?Also should I be synching on nearby stars before I goto a faint object? And then should I be synching on the object as well? Does synching replace the alignment information, and if so is that desirable or not?
Quote:Paul, One thing to add to "If it's off significantly horizontally in the EP, adjust the DEC manually and remark the joint.", after you adjust the Dec for being off in Az, shut down the mount and start it up again. This establishes the adjusted position as the new "Zero Position".JohnD
Quote:Using appropriate levels, square the mount in both axises. To minimize cone error in RA, set up your mount with the counterweight shaft aligned with the front (north) facing leg..use a plumb bob off the shaft perfectly intersecting the front leg and mark your RA basic setting. I use a small white tag on the RA joint, put a fine line on it and cut it at the joint with a razor knife, do the same with an OTA in the saddle and mark the DEC joint the same way. Now you have a 'base' repeatable setting.Paul