Skywatcher Dual speed low profile

[Gareth88]

Now this is nothing FLO side ( cause there a brilliant bunch of people! ) but ive just bought a https://www.firstlightoptics.com/skywatcher-focusers/skywatcher-dual-speed-low-profile-1252-inch-crayford-focuser.html to upgrade my Focuser on the standard 200p, fitted it etc and for some reason can not reach focus atall with a eyepiece, let alone my offaxis guider / dslr.

Just to wonder, has anyone else had this problem? If not il have  to email FLO in regards to this on Monday.

 

Gareth

[DRT]

Gareth,

The problem is the height of this focuser is much lower than the one you have replaced so you will need to use an extension tube to reach the focal point. FLO should be able to advise you which length of extension tube you need.

Derek

[Stub Mandrel]

Looking at the listing:

" ncorporates drawtube extension so also suitable for visual use, even when using long focal length 2" eyepieces!  "

https://www.firstlightoptics.com/skywatcher-focusers/skywatcher-dual-speed-low-profile-1252-inch-crayford-focuser.html

Looks like the small knob at near right releases an extension tube you can pull up., while the one at far left secures the 1.25" insert.

It seems to have a built in extension tube, have you pulled it all the way up?

[Gareth88]

Yes, ive tried both, with it all the way in, and all the way out still cant get focus, maybe extension tubes are the way unless you can think otherwise.

 

Gareth

[Sirius Starwatcher]

I had the same problem . Will measure my extension tube and let you know the length.

[Steve Ward]

As previously stated , the focuser has a built-in extension piece ....

[DRT]

So you still have the old focuser? If so wind it all the way out with its extension tube fitted and compare the total length to the length of the new one. If the new one is shorter that will be the problem. 

[spaceboy]

http://www.telescopehouse.com/accessories/eyepiece-adaptors-and-extension-tubes/revelation-self-center-35mm-extension-tube-2.html

[Sirius Starwatcher]

This is how i got round it. Total length of the focuser train is 105 mm.

 

focuser for SGL.docx