Jump to content

 

1825338873_SNRPN2021banner.jpg.68bf12c7791f26559c66cf7bce79fe3d.jpg

 

Fitting a Moonlite Focuser to a Celestron C80ED


 Share

Recommended Posts

Hi

I have bought myself a Celestron C80ED. I also have ordered a Moonlite Focuser for it. Does anyone know how you would install it on a C80ED. As I am trying to google some guides, but failed so far to find one.

The pic shows the stock focuser housing, does this come off ?

There 3 grub screw sockets what are they for ?

Your help would be appreciated.

Cheers

Nadeem.

Edited by Deneb
Link to comment
Share on other sites

The whole focuser on the C80 ED screws onto the end of the tube. They can be very tight and hard to unscrew, but one of the Rubber Strap Wrenches from a diy store will give you enough grip to unscrew it. Then it's just a matter of screwing the Moonlite onto the tube. The grub screw sockets you are referring to are for adjusting inner workings of the focuser

John

Edited by johninderby
Link to comment
Share on other sites

Nadeem,

the R&P focuser on the C80-ED is pretty basic isn't it? It's a shame because the rest of the telescope is pretty good. I should imagine with a moon lite on it will be the dog's danglies. Hope everything goes OK. There's a reference be people being unable to undo the treads here:

Agena AstroProducts Crayford Focuser Adapter for Celestron C80ED Refractor

Post up a piccie when you get the new focuser on.

cheers

Alan

Link to comment
Share on other sites

Nadeem,

the R&P focuser on the C80-ED is pretty basic isn't it? It's a shame because the rest of the telescope is pretty good. I should imagine with a moon lite on it will be the dog's danglies. Hope everything goes OK. There's a reference be people being unable to undo the treads here:

Agena AstroProducts Crayford Focuser Adapter for Celestron C80ED Refractor

Post up a piccie when you get the new focuser on.

cheers

Alan

Thanks for the reference Alan, Actually after reading John's post I decided to give it some brute force, I have managed to unscrew the stock focuser:hello2:.

Now just to have to wait to receive the Moonlite.

Cheers

Nadeem.

Link to comment
Share on other sites

Great ! :D

They do vary a bit from just hard to unscrew to virtually impossible as the threads on the tube aren't always properly done. Pity they didn't just use the standard SkyWatcher fitting. But at least now you've just got the long wait until the focuser arrives.

John

Edited by johninderby
Link to comment
Share on other sites

Sounds interesting Nadeem. Be good to hear how that comes off in the end. I'm opting for the poor mans version for now, and going to apply some teflon tape to the sides of the drawtube to pack it out and stop it wobbling about.

Link to comment
Share on other sites

Just given mine a twist and the focuser looks like it will come off ok. Knowing what sytnas grease is like from when I stipped my EQ5 down, I took the R+P apart this morning and quite honestly you could build a Blue Peter Tracy island with the grease it's that sticky. Will re-grease later and see what difference that makes.

John

Link to comment
Share on other sites

I have been looking at upgrades for my Ed80. Will look to follow progress with this Nadeem. Sounds like it will turn out NICE. Picture of the scope with no R&P focuser and the finished item would be most enlightening. Hope delivery is pdq for you. Look forward to a cracking result, John

Link to comment
Share on other sites

Well the Moonlite arrived this afternoon, Now - Where do I begin ?

I spent 3 Hours installing this focuser onto the scope, you ask yourself why 3 hours, let me explain.

Taken the initial stock focuser was no problem, then I realised why people have so many problems replacing the focuser on this scope.

I was not too bothered with having a dual rate focuser, but interested in it's build quality & it's smooth operation for imaging. Well initially I had accounted the problems screwing the Moonlite to the scope tube, only to find out what John had previously mentioned that the threads on the OTA are not properly done.

Another thought I had was maybe the threads on the Stock focuser were more deeply threaded on the housing, so it would nicely cover the threads on the tube (see pics), the moonlite has a less spacing for this.

Anyway so I decided get the WD40 out & start cleaning the threads from the old residue of any substances which are preventing any movement. Once cleaned, re mounted the moonlite, it screwed in a little easier, but not perfect (see pics), to get the focuser flush as possible I had to use a Rubber Strap Wrench - but still not perfect (see pic). i was still left with 2 threads still showing bare & it would not screw in anymore. :)

Installing it was bit of a pain. So am I happy - Well Yes & No !

The Yes - I have a wonderful focuser, which oozes quality, feels a lot more stable - even with some weight on it, has a very nice smoothness & it looks the part, you will not have to worry that it will wobble when you have a reducer+DSLR hanging on the back of it. It comes with 2x Finderscope brackets & the best things I like about it is, it comes collimated from the factory, 1.25" eyepiece adaptor & you can rotate the focuser to your desired angle of viewing, certainly when imaging or viewing in a difficult position.

The No - With the problems I had, the Moonlite is not at fault here, Celestron have made a beautiful scope, but the scope focuser threads suck, i think for me thats the most dissapointing thing about it, so much so that as mentioned before, a couple of the threads show bare on the OTA. Well I suppose I could wrap the bare threads with some Black Insulating Tape :D if it makes it look better.

Just to wait for a clear night to test the focuser, Excuse the pics as they were taken with a mobile phone:

DSC00347.jpg

DSC00349.jpg

DSC00352.jpg

DSC00356.jpg

DSC00362.jpg

DSC00364.jpg

DSC00372.jpg

Cheers

Nadeem

Edited by Deneb
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.