collimation pic

[andrew2008]

http://img519.imageshack.us/my.php?i...imationwc1.jpg

Wondering does this look ok or do i need to go back and try again??

[Astro78]

Hey hey Jupiter,

Your secondary mirror's looking a little oblique. You wanna try to get it looking like a perfect circle.

To make this a whole lot easier grab a piece of white paper and tape this on the inside of the OTA (optical tube assembly) opposite the focuser behind the secondary mirror. Otherwise this will be deceptively difficult.

Welcome to Ice in Space

[dannat (Daniel)]

not looking too bad.. the times i adjusted the 2nd-ary i had the tube horizontal - just in case i loosened the screws too much and it came loose. if its horizontal it won't fall down onto the primary