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It's so exciting isn't it !!

Thanks for all your comments and help

The GSO eyepiece is 2in and the focuser a crayford. No issues with the focuser - it is excellent.

The image of the doublet did improve with time. Thinking about it, from where I was viewing alpha centuri was located above Sydney CBD, so might expect lots of seeing/air currents there vs where the moon was which was pretty much due east and over the pacific from where I view from (I live near Manly).

Is there an angle above which the seeing improves noticably e.g. 60 degrees to the horizontal and above? And likewise and angle below which you are best advised to avoid?

Where can you find a jetstream forecast ?? What conditions are best - low/high pressure or other factors?

Does anyone view with contact lenses or glasses? I have mild astigmatism and my lenses can't correct for that but is viewing better or practical with glasses (which can correct astigmatism)??

On to the dreaded collimation. I have a cheshire collimator on the way to me today. Reckon I understand what to do and how to adjust the secondary mirror. The primary mirror though, or bottom of the OTA, has 6 screws and not 3 Does anyone know which screws are which and in what order to adjust? Perhaps 3 screws are to hold the mirror in place and the other 3 to adjust the tilt...?? There were no instructions with the scope to explain which was which....




Should I be able to seeany nebula's viewing from Sydney?