Quote:
Originally Posted by barx1963
On another point, you mention you are using a barlow adaptor, I assume it is one of these https://www.collimator.com/accessori...wed-attachment . If so this should actually spread the beam out so you don't get a tight dot on the primary to adjust your secondary. Are you sure it is not the 1mm Aperture stop that you are using? |
It is one of those screw on adapters yeah, but not the self-barlowed attachment. It came with the howie glatter (not listed on their accessories page for some reason). Without it on the laser beam is quite broad, and with it on the beam is only around 1mm in size and is a nice tight dot.
I put the scope all back together again, and kept the tube rings right up against the focuser.. guess what - barely any movement of the laser dot now when I rotate left and right. I'm going to order some more tube rings but will do some further tests tonight. All is looking rather promising so far!
I should just bite the bullet and get a CF tube haha..
https://www.siderealtrading.com.au/p...lescope-parts/
Cheers, Mike