Quote:
Originally Posted by gregbradley
What Marc said.
There is clearly tilt in the Rosette image. 2 corners show elongation the other 2 aren't bad. That's tilt. Fixing something else will be a dead end.
The CAA isn't helping so I would get rid of that and get that adapter for the Moonlight and replace the Tak focuser which is a known weak link.
Greg.
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Thanks Greg, I've checked out the spare Moonlite focuser that I have and unfortunately it isn't going to work. It is one that I had on the TSA120 and won't suit the FSQ as it has the integrated long draw tube. The Nitecrawler focuser that Moonlite make for the FSQ106 has a recess that the rear lens element from the FSQ can slip into. If I'm going to replace the focuser then I will lash out and get the Feather Touch one. I would like to make that pesky CAA go away but I don't know how I can do this without replacing the whole focuser any way.
I have a few more things which I am going to try tonight whilst it is clear (albeit with some moon about). I'm interested to spend a little extra time making sure that the focus is correct by zooming in on the stars in the centre of the image. I want to be sure that the radial stars in the corners were not affecting the focusing.
Attached images:
* My spare Moonlite focuser
* A screen shot from a video showing the Moonlite night crawler being installed on an FSQ106
Cheers,
Rodney