I purchased this to replace the stock Crayford focuser on my GSO 6” RC. The stock Crayford focuser was grossly out of alignment with the OTA center line and had wobble in it when extended or attempting to lock it. It did not permit repeatable collimation. The Apetura Rack and Pinion focuser was well aligned with the OTA and rock solid when extende

d. There was no wobble induced by weight of camera or focus lock. It facilitated repeatable collimation points. This is a very high quality focuser at a very economical price.

I lack experience to compare to alternative products. It feels to my novice hands to be heavy, very sturdy, on a completely different level from any other mount I’ve owned, which doesn’t surprise me - most mounts I’ve owned came with 0. 96” eyepieces among other things.

First night out, kneeling in the snow trying to polar align, waiting

for the sky to get dark enough to be sure I was looking at Polaris, I began to wonder if if made a mistake. Finally made the commitment and it asked for guide stars so I picked the only ones I knew the names of and it seemed to work. Stuck my canon R100 on it with the kit lens and said, “Why not?” and fired off 10 30 second exposures of some random patch of sky pretty close to straight up.

My first “real” astrophoto shows the Andromeda galaxy plain as day, as well as some nice smudges around Cassiopeia worth digging into further. No star trails. No wobbles.

I’m happy enough.

Finally got some solid images of M 27 Dumbbell Nebula using this Coma Corrector and my Big Beast 8 inch Newtonian!

telescope is fantastic - it took a while to fiqure out how to get it in focus with eyepieces. But once i perrchased the 90 degree holder, everything became clear and stars are precise. the only thing i would do different is buy the 12" dob instead of the 8"

Well made. I haven't had a chance to try it out well. Nothing but rain!!

This is a great adapter. Works right out of the box and had zero issues. <br