Uncollimatable scope?

[binarymizar]

Hi all,

Just been having a look around my new scope (Skywatcher 200mm newt) and it occured to me that it only had three screws at the back! :shock: Does this mean there is no way of adjusting the primary when I buck up the courage to collimate? I always thought (and the instructions say it) that there should be 3 adjustmewnt screws and three locking screws.

Have I got a dud?

[Jamie]

Its doubtful but i will let the Skywatcher crew sort you out.

[GazOC]

Going from memory, there are 3 locking screws and 3 collimation screws. Have you got a picture, I could probably put your mind at rest?

[Andrew*]

I don't think you can get an UNcollimatable scope. It's probably just a different design. Sounds like SkyWatcher (or generally modern technology) to make a clever design that actually just worries and confuses you at first, even if it does make the job easier.

Andrew

[binarymizar]

Hi Gaz,

Have sent you a picture by email. I cant seem to upload to this site, even when I put in my username and password!

[GordonCopestake]

The upload an image button uses your iseestars login NOT your SGL login, if you hit additional options you can upload an image there.

[Andrew*]

if you've already registered with Isee Stars and still having problems, check the file is not .bmp. Jpg will always work, but I always get an error message trying to upload .bmp images, and ones that are too big.

Andrew

[GazOC]

I think its just a cover. Take it off (with the mirror towards the floor just in case) and the collimation screws etc should be underneath.

[geppetto]

Agree with Gaz, probably a cover, mine has one

with collimation bolts underneath it.

[binarymizar]

Ahhhh< I seee!

[The Warthog]

If he leaves that cover off, will it improve airflow and cooling time?

[GazOC]

If he leaves that cover off, will it improve airflow and cooling time?

Definately, I'd leave it off and just put it on if you need to transport it.

[binarymizar]

It IS a cover! Thanks lads!

[GazOC]

happy days! I bet your heart was in your mouth eh?

[GazOC]

I deleted the other thread now the issue has been resolved.

Please continue all further discussions on uncollimatable scopes in this thread.

[The Warthog]

I have to leave for home now, but I'll work on what you can worry about next.

[John]

I used to have one of those - mine had a 2 inch hole drilled in that cover with a fan attached to it which ran off a small battery - it lessened the cool down time a bit but I was worried about dust blowing over the mirror so I did not use it much.

John.

[binarymizar]

It`s OK, I`ve already thought of something else to worry about!

If I leave this cover off (for faster cooling purposes) can dust than get in the back of the scope during storage?

[GazOC]

No. To be honest, it'll be fine on or off. It's just it'll cool down that bit quicker off. I wouldn't worry either way mate.

[Caz]

That back plate as got one or two skywatcher owners stumped too, me included...

I leave the plate on, its that little bit of extra protection for the mirror...

Caz

[daz]

I had mine cut to allow access to the collimation screws, I put a cooling fan in it and then left it screwed in place

There should be a picture way back in the Astro Workbench, I think.....

[Jamie]

I don't think you can get an UNcollimatable scope.

Andrew

Andrew you CAN get uncollimatable scopes most fracs for instance..

[GazOC]

A lot of smaller Newts are also fixed mirror.

[GordonCopestake]

some maks too

[Andrew*]

Of course, I knew fracs are usually fixed, but I didn't know that some newts and maks also are. What advantage could this have? I mean, surely the mirrors will still go out of line slightly?

Andrew