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_globular_clusters_winners.thumb.jpg.13b743f39f721323cb5d76f07724c489.jpg

michaelmorris

SW 80ED - convert to 10:1?

Recommended Posts

I have an old Skywatcher 80ED (it's actually on Orion, but they are identical).  This older model only has a single speed focuser, whilst the modern version has a 10:1 focus knob.   Does anyone know if there is a conversion kit for this?

Image result for orion 80 ed

NOTE - I'm not looking at changing the whole focuser, just the focuser knob.

Thanks

Share this post


Link to post
Share on other sites

i expect for the hassle you're better off with a new focuser, see quite a few stock focusers for sale where people upgrade.

Share this post


Link to post
Share on other sites

Best of luck. I have an older skywatcher one also and have been looking for a skywatcher 10:1 too. So far with no success but have been close a few times. I know flo do one but this does not have the thread on the focus tube to attach the FF directly.

  • Like 1

Share this post


Link to post
Share on other sites

The lacerta one is a good job. I sold mine a few months ago, decided to go back to the motor focuser.  It’s an easy straight swop. 

Share this post


Link to post
Share on other sites
1 hour ago, dyfiastro said:

Thanks for the link.  Looks exactly what I'm after 😀, but at a price that is way more that I was thinking of 😕

I think the idea of trying to get an original focuser (with 10:1) that someone has replaced might be the best bet.

Edited by michaelmorris

Share this post


Link to post
Share on other sites

There's always the marmite/jamjar lid mod Michael 😉  (drill hole in lid and place over focuser to increase diameter of knob and so make focus finer)

Helen

Share this post


Link to post
Share on other sites
1 hour ago, michaelmorris said:

Thanks for the link.  Looks exactly what I'm after 😀, but at a price that is way more that I was thinking of 😕

I think the idea of trying to get an original focuser (with 10:1) that someone has replaced might be the best bet.

I think would be the best bet, Michael. Quite a few people seem to swap out the stock 10:1 focuser for an upgrade, I'm sure a 'wanted' ad on here or ABS would turn up something.

Share this post


Link to post
Share on other sites
8 minutes ago, GazOC said:

I think would be the best bet, Michael. Quite a few people seem to swap out the stock 10:1 focuser for an upgrade, I'm sure a 'wanted' ad on here or ABS would turn up something.

Just done it!

 

  • Like 1

Share this post


Link to post
Share on other sites

The Lacerta conversion was the first one that sprang to mind for me, too.  I recall at least one person making their own, but that might be a bit extreme :)

If you're not in a hurry then I'd agree that waiting to see if the stock focuser from a newer OTA might be the way to go, though I'm not sure it would save you that much over the Lacerta kit given that a new Skywatcher dual-speed focuser (albeit better quality than the stock one) is probably in the region of £120 to £130.

James

Share this post


Link to post
Share on other sites
22 minutes ago, JamesF said:

The Lacerta conversion was the first one that sprang to mind for me, too.  I recall at least one person making their own, but that might be a bit extreme :)

If you're not in a hurry then I'd agree that waiting to see if the stock focuser from a newer OTA might be the way to go, though I'm not sure it would save you that much over the Lacerta kit given that a new Skywatcher dual-speed focuser (albeit better quality than the stock one) is probably in the region of £120 to £130.

James

I've looked at replacement focusers and none of the more affordable models allow for screwing on the focal reducer, which is something I'm very keen to retain.  

Edited by michaelmorris

Share this post


Link to post
Share on other sites

Michael,

I use three ED80's and I've converted them all to 10:1 focusers plus added a SW motor using a timing belt drive.

I assume if the reducer screws onto the extisting focuser then it would also screw onto the replacement. ( I don't use one so can't confirm)

Look for a 96mm fitment 10:1 Crayford.

 

 

Share this post


Link to post
Share on other sites

I will try again at a later date to source one. @michaelmorris if you get multiple offers please let me know as I can always take one :)

Share this post


Link to post
Share on other sites

Thanks for the suggestion. The problem is that these don't have the M56 thread on the end of the focus tube, hence why I'm after an original SW focuser.

Share this post


Link to post
Share on other sites

Hmmm...

OK, I think your saying the end of the drawtube has a 56mm thread. This is where the 2" adaptor screws onto the drawtube?

All the 10:1 focusers I have came from "other" ED scopes, so I'm not sure what the thread is on a generic GSO type focuser......

Share this post


Link to post
Share on other sites

@merlin66  Yes this is correct. With the standard skywatcher the collar at the end of the draw tube can be unscrewed and this allows you to directly screw the field flattener to it. This allows for a more stable image train with minimal flexing. 

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

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