new 90 degree diagonal

[eye in the sky]

Hi all

My thumbscrew thread has just gone in my meade standard diagonal that came with my lx90. Im thinking of replacing it with one with a compession ring. Can someone please point me in the right direction of which one to buy. Also i am after a new t piece with a compression ring on (the one you lock the diagonal in that screws to telescope). Any advise would be of use.

cheers

dave w

[kniclander]

there's a 2" celestron XLT diagonal for refractors on special offer at Telescope Plus (David Hinds). I bought one and it seems great (although I don't have much to compare it with tbh....)

It's about £75 reduced from about £120 (and I got a free magazine too:))

[johninderby]

If you want the brass compression ring then you'll have to go to a 2" SCT Visual Back adaptor such as this at £14.00 plus postage http://www.astronomica.co.uk/index.php/Accessories/Adaptors/2-SCT-to-Push-Fit-Adapter-Female-to-Female.html that will let you use a standard refrractor type diagonal. You can get diagonals that just screw directly onto the back of your OTA but the refractor type is more convienient.

Get a 2" diagonal as then you'll no longer be restricted to 1.25" eyepieces. The same shop also has a decent 2" dielectric diagonal on at £72.00 http://www.astronomica.co.uk/index.php/Accessories/Mirror-Diagonals-/-Prisms/2-Mirror-Diagonals/2in-Premium-Dielectric-Push-Fit-Mirror-Diagonal.html

There are other places you can get them of course but it will give you an idea of what you should be looking for. D Hinds or FLO have the Celestron diagonals as well.

John

[eye in the sky]

Thanks for your advise that 2" diagonal looks ok for 72 pounds.

dave