Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

Skywatcher Finderscope Quesion


Recommended Posts

Hi all

I've recently brought a Skywatcher 200P (secondhand) & I am quite happy with it so far. The only niggle I have is with the finderscope as I find it to be quite sloppy in the mount. So my what I'm wanting to know is.

Is there an O ring or something similar that goes around the scope so it's not loose when it is placed in its mount?

I have put an elastic band around it for now not ideal I know but it is now a much more snug fit in the mount.

IMAG0493.jpg?t=1325279720

IMAG0494.jpg?t=1325279783

Sorry the pictures aren't great.

Link to post
Share on other sites

Wow fast response thanks for that I did think that it needed one. I guess the other question would be can they be brought & if so who sells them?

Link to post
Share on other sites

Don't know who sells the proper one. You can easily buy O rings of the correct diameter but they always seem to be too thick to fit.You might try FLO.

BTW this youtube video shows a finder with the same type of bracket which illustrates the O ring really well.

John

Link to post
Share on other sites

Indeed there should be a rubber O ring that holds the front part in place while you fiddle with the back part of it with the adjustments screws. I guess any suitable O ring from your local hobby market should do

Edited by assasincz
Link to post
Share on other sites

Cheers for that guys I'll have a rummage around & see if I have any O Rings lying about. I know a friend of mine has a box of assorted O Rings but I'm sure they are quite thick.:p

Link to post
Share on other sites

I've just been through the Skywatcher boxes but haven't found it in there. I guess the elastic bands I put on mine will do for now but I will see what my friend has in his box of assortment of O Rings.

Link to post
Share on other sites

I managed to sort it out ok tonight. I had a look in my friends assortment of O Rings & ended up fitting one that was only the same size diameter as the eyepiece end & stretched it over to the groove on the finderscope, as the o rings that were the right diameter were to thick. It all fits nice & snug now with no wobbles so hopefully I should be able to set it up without it going out of alignment when the scope slews round in one of it's weird positions.

Thanks again guys.:p

Link to post
Share on other sites

I guess that's what the previous owner done with it. I've had to revert back to the rubber band for now as the o ring broke. I guess they don't like to be stretched.

Link to post
Share on other sites

I know this may sound a little daft but there are quite a lot of small motor drive belts used in the electronics and model industry, these will not be as thick as the large O rings, may be a look in Maplins or RS spares, or perhaps a model supplies outlet could be rewarding :(

Link to post
Share on other sites
I have hundreds of different o-rings at work in non-standard sizes. Let me have a rummage on Monday and if I have one that fits I'll let you know.

Thanks that would be great, the rubber band is holding it in place nice & firm so no rush. If you haven't got any then I might try my local motor store or B&Q etc.

Link to post
Share on other sites

I spent the first few months with the O ring hanging loose on the finder bracket before I realised what it was for!:( Funny how much better it gets when you put it in the right place....

Link to post
Share on other sites
  • 8 months later...

Hello. I know this is an old thread, but I discovered the O-ring on my Skywatcher Finderscope had broken this evening. I don't have any spares but in a flash of inspiration I used one of my wife's hairbands - she has some skinny ones without the metal crimp on (they are kind of melted together at the ends. Anyway, I had to double it over to make it fit snugly but it works like a charm!

Link to post
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
  • 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.