Problem installing Red Dot (Maksutov 90)

[Perene]

I was trying to install a Red Dot that came with a Skywatcher Maksutov 90mm when had some doubts and a possible problem.

The manual says to insert the Red Dot in the telescope support but it seems something is missing or I am not doing this properly.

This is the Red Dot and its two screws:

Picture 1:http://i.imgur.com/vSkCqjU.jpg

Screws detached:

Picture 2:http://i.imgur.com/dp9J6G7.jpg

Red Dot with no screws attached: http://i.imgur.com/2fQSEHY.jpg

Another angle: http://i.imgur.com/xgVP8cu.jpg

Maksutov telescope with two screws and the support for the Red Dot:

http://i.imgur.com/5bqB3Z1.jpg

Now, the mystery...

Pictures 6 and 7:

http://i.imgur.com/eNDZKBP.jpg

http://i.imgur.com/m54RbIx.jpg

Only in this way you can fix the Red Dot in this telescope. Perhaps I need to remove the screws from the telescope:

http://i.imgur.com/5bqB3Z1.jpg

Or maybe something from Red Dot itself is missing?

This Red Dot isn't firmly fixed at all in the telescope, if you touch it, it can move and fall. And with its screws it cannot even be inserted in the way you see from pictures 6 and 7.

[Cornelius Varley]

I can;t really tell from picture no.1 but it appears that the two detachable plates on the wrong way round. The plates should have a small wedge shaped lip on the inside face which matches the top of the finder mount.

[Perene]

I can;t really tell from picture no.1 but it appears that the two detachable plates on the wrong way round. The plates should have a small wedge shaped lip on the inside face which matches the top of the finder mount.

I tried multiple combinations from whatever came with this Red Dot and this is the only way you can fix it into this telescope:

http://i.imgur.com/eNDZKBP.jpg

Which means you can't use any screw, at least those that came with it can't be inserted in these holes.

Am I missing something? Is it possible this Red Dot should have come with something else to attach into the telescope?

[Cornelius Varley]

Page 11 of this manual http://ca.skywatcher.com/upfiles/en_download_caty01316546551.pdf show a diagram of the RDF attached to the 90 Mak, Yours should be assembled in the same way.

[Pondus]

Hey

I doubt that the screws are meant to be inserted in any holes, they are meant to tighten the bracket to the slot.

Slide the RDF bracket into the slot on the scope, start sliding it from the 'diagonal side' of the scope and use the screws only for tightening.

Rune

[Pondus]

http://ca.skywatcher.com/upfiles/en_download_caty01316546582.pdf

hmm. Never tried a link befor. No idea if it works..

Rune

[Pondus]

Oh Sorry. 

Didnt see the previous post from Peter there ( same link more or less)

Rune

[Perene]

I contacted the store which sold me the telescope and they instructed me to keep the Red Dot this way:
http://i.imgur.com/vSkCqjU.jpg

But unscrew it and then attach both screws again, as you can see from those two pictures they took:

Picture 1:
http://i.imgur.com/11HnZYy.jpg

Picture 2:
http://i.imgur.com/jQRb8ne.jpg

I had to unscrew just a little and then attach both screws again. I had some doubts about this (and when I attached the tube I found that odd as well), because in my mind (specially when you are dealing with this sort of equipment) everything had to be bound together by something more than that. I mean, when you hear a "click" and two parts of the same equipment are bound together, firmly attached to each other. In my mind doing the procedure above was not enough to keep the Red Dot attached to this telescope.

[impactcrater]

I've got a handle on your problem...I have one of these finders. you are missing the 'shoe' which slides into the slide mechanism which is screwed to your scope barrel.  have a look at some supply sites to see what it should look like. and often these diagrams of the set up procedure  only confuse you....

[impactcrater]

http://www.bintel.com.au/Accessories/Finderscopes/49/catmenu.aspx

this telescope site gives the idea....

[Cornelius Varley]

I contacted the store which sold me the telescope and they instructed me to keep the Red Dot this way:

http://i.imgur.com/vSkCqjU.jpg

But unscrew it and then attach both screws again, as you can see from those two pictures they took:

Picture 1:

http://i.imgur.com/11HnZYy.jpg

Picture 2:

http://i.imgur.com/jQRb8ne.jpg

I had to unscrew just a little and then attach both screws again. I had some doubts about this (and when I attached the tube I found that odd as well), because in my mind (specially when you are dealing with this sort of equipment) everything had to be bound together by something more than that. I mean, when you hear a "click" and two parts of the same equipment are bound together, firmly attached to each other. In my mind doing the procedure above was not enough to keep the Red Dot attached to this telescope.

That's the way it should it fit.