Saturday, April 25, 2015

17.5" Truss for Tom almost complete . . .

Tom's 17.5" is just about complete. To be added is the primary mirror
dew shield and the DSC stalk.

A neat feature of this design is the ability to transport, store and assemble
the scope with the mirror box in the rocker box. Without the alt bearings
these two components will "nest" for a smaller package.

Tom asked for a "powered ground board". Here the power connection
attaches to the "power rings" on the top-side of the ground board.

The top of the ground board and  12Vdc "power rings".
I always "sign the ground board" -- not visible unless it is removed
from the telescope for some reason.

The top of the rocker box bottom and power connection.
a 4-channel  "distribution" panel is also
 included with the powered ground.





Monday, April 20, 2015

Friday, April 17, 2015

Tom's 17.5" Upper Tube Assembly . . .

Just about complete is the Upper Tube Assembly for Tom's 17.5" truss telescope.
I need to add the finder board and truss block assemblies.

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.

Tuesday, April 14, 2015

Tom's 17.5" UTA Taking Shape . . .

Full Upper Tube Assembly for Tom's 17.5" F4.5 Truss Telescope.
The focuser board and finder board checked for fit.

Monday, April 13, 2015

Tom H's 17.5" F4.5 Truss Telescope . . .

Tom H's 17.5" F4.5 Mirror Board and rear Cell.
Tom lives in Angelus Oaks, California.

Mirror Board with Cover removed.
Tom chose a beautiful MinWax Early American Custom Color.

17.5" F4.5 with Mirror Cover in Place.