That's pretty damn amazing to get such good stars after 150 minutes at that focal length!
What did you do to the mount to get it performing that way? I only just pulled mine apart last month for the first time in over 10 years of owning it. I cleaned all the bearings and shafts, regreased it all with lithium grease and put it back together again. I didn't touch the worms or their housing (not confident enough). I'm stoked to get 30 minutes out of my G-11 with round stars; admittedly, I've never tried pushing it any further than that as I try to make use of every clear night I possibly can, either doing narrowband or full colour when the Moon isn't around.
Really interested to know what magic you've wielded to get it to work that well!
H
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