Skywatcher focusers with different length drawtubes

[JamesF]

I had no idea they did this.  However, last week I purchased a stock Skywatcher R&P focuser to replace one I'm not happy with until I can pick up something better.  When it arrived it turned out to have a much longer drawtube than the one I took off my Evostar 102 (which, you may notice from the photo, has been subject to the tender ministrations of a courier company).

The longer drawtube even has baffles inside.  I've never seen one like this before, but it's quite handy as it will give me sufficient backfocus for a camera without needing extensions.

James

[John]

The longer one looks like what I'd expect to see on the F/9.8 Evostar 102. Similar to the one that my old Vixen SP102M had. The shorter one is what I thought the F/5 Startravel 102 would come equipped with. Maybe your old one started life on a Startravel 102 ?

 

 

[JamesF]

Could be.  It's all used kit, so may have had focusers changed before it got to me.

James