Terry Danks Photography: Birds, Scenery, a little astrophotography too. http://danks.netfirms.com/home.htm Equipment List: Too embarrassed to list it all. Roll-off-roof Observatory Constructed Fall, 2013
HyperTuned CGEM and G11wG2 SV115T20, Meade SN-8, AT-66, and modified 20d. Nebulosity, SkyTools3, TSX, and Pixinsight.
Quote:"Backlash in the R.A or DEC gear is caused by two things.First, the meshing of the worm to worm gear and second if there is play of the worm between the two worm bearings"Play of the worm between the bearings can be seen by watching the worm as you move the Dec by hand with the clutch tight.
Far out in the uncharted backwaters of the unfashionable end of the Western Spiral Arm