Skymak 127 focuser travel.

[banjaxed]

Been meaning to ask this question but keep forgetting. How can you tell when you have reached the full in or out focus when the focus knob seems to turn forever, it has me puzzled.

Maurice.

[Cornelius Varley]

18 minutes ago, banjaxed said:

Been meaning to ask this question but keep forgetting. How can you tell when you have reached the full in or out focus when the focus knob seems to turn forever, it has me puzzled.

Maurice.

The focus knob will stop when it hits the end. Don't try to wind it any further. My Skymax 90 takes about 25 turns stop to stop (just tried it)

[banjaxed]

Thank you for your reply, maybe it just seems to turn forever 😀

[geeklee]

19 minutes ago, banjaxed said:

Thank you for your reply, maybe it just seems to turn forever 😀

I've always wondered this as well! Always been careful not to test the forever theory 😅 From focus with a diagonal to focus with a camera seems vast on that little focus knob. 

[banjaxed]

Being consumed by curiosity I just counted the turns on the focuser and it was approximately 30. Little wonder I thought it turned forever 🙄

[JamesF]

33 minutes ago, banjaxed said:

Little wonder I thought it turned forever

It certainly can feel like that.  Especially when you're struggling to get focus on something...

James

[jacksdad]

The focus knob is effectively a nut.

 

Turning it clockwise, it'll just bottom out - this pulls the mirror closest to the back.

 

Anticlockwise (pushing the mirror forward) the end stop is a small screw under the rubber grip cover (can be seen in pic below), the head of which is just slightly too big to pass through the thread in the knob.

 

 

If you're going to be playing with finding the end stops, it might be worth pulling the rubber off and checking that screw is tight

[banjaxed]

Thanks for your suggestion but I don’t think I will be playing with the focuser any more than I have to, don’t think I could spare the time 😀

[Captain Scarlet]

My Skymax 180 is 29 turns stop to stop...