Well, secondary screws actually !
I've been having terrible tracking and guiding issues recently, oval stars no matter what I did. Shorter exposures have been ok but as soon as I go over about 3 mins there is always some movement that can't be guided out. I've really been racking my brain trying to figure it out then today I looked at the secondary on the RC... all three screws a third of a turn undone ! I guess thermal expansion over the hot and cool nights plus I couldn't have done them up tight enough to start with (though I thought I had). Well we live and learn :(
Robert
You can get on with things now Robert ;)
There is always something we can't figure out, and so often things we've not encountered before.
Well at least you've sussed it out, must have been frustrating though.
Carole
:frog: That's what summer is for, checking and configuring, disassembling and cleaning, and finding you have a screw loose.
Quote from: The Thing on Jun 21, 2015, 09:57:53
:frog: That's what summer is for, checking and configuring, disassembling and cleaning, and finding you have a screw loose.
Yes. Indeedee, I'd exausted the options at the other end the I remembered what happened on the C9.25 I had...