Thanks for the info,
I think the viewing conditions were poor but the DSOs were impressive. Cant wait for good seeing conditions!
I'll give the cardboard aperture stop a try if I cant get better results.
In regards to my binoviewers, I use a 2x Barlow and it works great with my f4.5 14" Dob. In fact I now mainly use the binoviewers with this telescope because they are the perfect for most of my observing.
It seemed with the 20" that I could get focus but the image was blurry, I need to setup again and try and work out what's going on. Unfortunately, weather is iffy in Adelaide at this time. I guess it is winter.....
There's a youtube vid where they setup binoviewers with the 20" Stargate. They're different type to mine but need to find out what they use to make it work.
Cheers
Rick
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