EP extension tube for Baader Mk iii Zoom & Barlow

[mikeyrea]

I been trying out the barow extension to the baader mk iii zoom lens and found it's pretty hit or miss if I've got enough travel on the focuser.

I have a Skywatcher 200P (f5) with the standard Crayford Focuser, and I use the 2" holder.

I'm thinking a extension tube would sort this out, with 45mm & 80mm products available.   The 45mm should be enough, but would be interested in hearing from anyone else with this setup..

[John]

Is it outwards or inwards travel that you seem short of ?

If you don't have enough outwards travel then an extension tube will help, if you are running out of inwards travel then it won't.

[mikeyrea]

Yes, it's outwards John.

If I don't push the EP all the way into the focuser I can get some joy right at the end of the travel, but maybe sacrifice a bit of 'structural integrity'

Cheers

[mikeyrea]

For anyone that intersted the 45mm was ideal.

I got this one:     http://tinyurl.com/2-extender