Tasco 11TR tweaks
Posted 06 December 2012 - 12:33 PM
Images were good but there was a little astigmatism. looked again and the secondary was not in the right spot. Decided to get rid of the shell and silicone a new 1"(better coating and pyrex) that was laying around. Machined a little holder, glued it down. Shortened the focus tube about 10mm so it isn't in the light path, shaved off the inner wing nuts on the spider. This reduced to CO from 1.17" to about 0.98" and the mirror is more secure. Doing a few other little tweaks. I'll try and get some pics. Interesting to see what kind of performance I can from of this $5 scope. It seems to have a good mirror.
Posted 06 December 2012 - 05:09 PM
Posted 10 December 2012 - 04:32 PM
Posted 10 December 2012 - 04:33 PM
Posted 10 December 2012 - 04:37 PM
Posted 13 December 2012 - 08:33 PM
I have just completed an overhall myself on the scope, straightened a few dints from the previous owner! ( scope toppled over) ouch.... I stripped the mount apart and cleaned and re greased etc... did a quick collimation after cleaning both of the mirrors.... it is now starting to look quite nice.... I have been thinking on getting some quality lenses for it, after reading a few post about this scope.
would you recommend changing the focuser... ( can't remember name of it.... )
I'll grab some pice soon of it and upload them...
again Many thanks for a great thread... p.s I'm a very novice sky watcher!
Posted 14 December 2012 - 06:24 AM