Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_christmas_presents.thumb.jpg.587637e0d01baf4b6d21b73610610bbb.jpg

AlentejoSkies

COMPLETED - Wanted: Flexifocus for ETX

Recommended Posts

Hi Douglas,

They are easy to make. You need:

(a) a piece of wire - cycle brake or gear cable works well. 

(b)  the metal connector from a cable connector block. 

1. Remove the focus wheel from the ETX (there is a small grub screw on the side of the wheel) and attach to one end of the wire. 

2. Insert the other end of the wire into one end of the connector. 

3.  Attach the connector to the ETX focusing spindle. 

Hope that helps. 

John

BD6CD4D8-02AA-42A5-A41F-62049BDB27F6.jpeg

Share this post


Link to post
Share on other sites

Thank you John, that helps a lot. I was wondering if brake or gear cable would do the job. I'll get the cable cutters out tomorrow.

Share this post


Link to post
Share on other sites

So, to follow up:

This thread can be closed.

I did the job - dead-easy, thanks John - but immediately realised that the focus rod is stiff. I'd never noticed before, but now it was obvious. Torsion would build up in the cable until it was enough to overcome stiction and then suddenly it would make a half-rotation in one jump. Gear cable wasn't even strong enough not to uncoil in the one direction. The brake cable fared better, but I think flexifocusing is out of the question until the focus itself is smoother.

I'll see about stripping down and regreasing sometime soon. Looks like the back of the OTA will unscrew once it's deforked. But that's getting a bit off-topic for the classifieds.

  • Like 1

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.

  • Recently Browsing   0 members

    No registered users viewing this page.

×

Important Information

By using this site, you agree to our Terms of Use.