'New' s/h skywatcher 130m...

[itchy]

Just acquired a used Skywatcher 130m off one of my work colleagues to play with for a month or two.

I believe it to be the older version which uses a spherical rather than parabolic mirror. Is there any obvious way to check?

As far as collimating goes is there any point in using the 'film canister' method, as described in the instructions or does it require a proper collimation tool?

I've only used binos so far (Celestron 15x70) so looking forward to giving the scope a whirl.

[step_hen]

If its a 650mm focal length, its the parabolic version. If its the 900mm its got a spherical mirror, which isnt actually that bad at this aperature and focal length

Stephen

[itchy]

It's a 900 so spherical then. Gonna take it out tonight for a whirl as it looks like a clear sky.