Skywatcher EQ-5 Pro Question
Posted 16 January 2010 - 08:27 AM
Posted 16 January 2010 - 09:17 AM
I just received my new mount and I have a strange question. On the Dec axis there is a part in front of the polar allignment scope that connects the counterweight bar to the mount saddle. Depending on the the rotation of the axis the polar allignment scope is either blocked or not. On my mount, in order to be able to look through the polar alligment scope (not blocked) I have to rotate the telescope tube perpendicular to the dec axis. Shouldn't both the telescope and the polar axis be pointed in the same direction when you are polar aligning the scope? What am I missing here?
No. They don't have to be, and there would be no practical way to do this with a polar borescope. This is normal for almost all GEMs (a few have had polar scopes mounted to the side of the RA housing, but that really doesn't offer an advantage). Polar align your scope with the OTA perpendicular to the RA axis, and when you are done return it to home position and do your go-to alignment.
Posted 16 January 2010 - 09:19 AM
Posted 16 January 2010 - 09:32 AM
Posted 16 January 2010 - 09:44 AM
Posted 16 January 2010 - 10:02 AM
Posted 16 January 2010 - 11:21 AM
Another point too is if the scope is perpendicular to the polar bore, you can rotate the RA axis a full 360 to get at the polar offset mark without hitting the tripod.
I have actually had some issues with this lately. With Cassiopeia and the Dipper in their current positions early in the evening, I have not been able to rotate the head enough to get an exact visual correlation. It hasn't been an issue though because I always get the proper position for Polaris from PolarFinder before going out so I know where it needs to be. I totally concur with other comments in this thread, the feature is pretty much standard on mounts with polar scopes. Clear Skies, BrianB.
Posted 16 January 2010 - 11:35 AM
Posted 16 January 2010 - 11:37 AM
Posted 16 January 2010 - 11:44 AM
Posted 16 January 2010 - 11:51 AM