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middy
24-10-2007, 11:35 PM
I don't know about everyone else but I find it very hard to see the centre spot through the cheshire collimation eyepiece in amongst all the crosshairs and images on images on images.

Well I was thinking what would happen if I put an SLR lens on my DSI Pro, mounted it on a tripod and pointed it straight down the pinhole on the collimation eyepiece.

Lo and behold there is an easy to see image of all the reflections complete with centre spot displayed in all its glory on my laptop screen. Here is a picture of the setup and a before and after shot. Collimation is now a breeze. :thumbsup:

ballaratdragons
24-10-2007, 11:41 PM
:2thumbs: :clap: :clap: :clap: :clap: :clap: :clap:

I like it :)

And you can sit at the end of the scope with the laptop :thumbsup:

middy
25-10-2007, 07:47 AM
That was with the 35 mm lens. It doesn't get the full view in, but then I don't need the camera to do the first steps of the collimation. I only need it for the last part where you have to centre the dot under multiple reflections of cross hairs and spider vanes.

I haven't tested the collimtion with a star test yet as it is cloudy at the moment.

astro_nutt
25-10-2007, 11:51 AM
Damn good idea Andrew!!!

StarLane
25-10-2007, 08:56 PM
I'll second that...Top idea:thumbsup: