Wednesday, April 15, 2015

Tom's 17.5" Center Marked for Collimation . . .

Tom's mirror on the Mirror Board and ready for "the donut"
The "center mask" in place. "Donuts" are usually available in any stationary store
Carefully center the mask -- easy..
The donut in place aids in colliation.

Here's a view of the "donut" on the laser collimator with barlow,
ensuring a nicely collimated primary.

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