|The altitude bearings and rocker box sides taking shape.|
Wednesday, June 28, 2017
|Peter asked that I mount the focuser, spider and secondary|
on the upper ring. The focuser is a 2-speed Moonlite
|I use a laser collimator to confirm that the focuser aligns|
with the secondary. Here you see the "dot" in the center.
There is enough up/down, left/right adjustment for this purpose.
Here is a pic of me and my scope at Killdeer Plains wild life area. It is working out great. Easier to move than my old scope and setup. Gave great view of the various objects I viewed. My friend was with me and he likes it to. Very good! I'm very happy!
Friday, June 23, 2017
|I always assemble my telescopes completely so as to check|
for fit, finish and motion. In this case -- it's right on!!
|The partially assembled OTA and ready to place in the rocker box.|
|It's easy to grab the top ring of the mirror box and lift the assembly|
into the rocker. A little leverage makes the job a snap.
|Add the "intermediate" ring. Note the washers are "up:|
This keeps the top-half of the struts from digging
into the wood ring.
|Add the top half of the struts, strings,|
sliding counterweight and finder(s).
|Finally, add the top ring. I make the struts a bit "off center".|
this puts stress on the assembly as it lines up and
creates a more rigid OTA. Note the strings as well.
|The mirror box, strings and mirror cover. I like to|
use Lemon Oil Pledge on the bearings surfaces to
clean and lubricate the Ebonystar and Teflon.
Wednesday, June 21, 2017
Saturday, June 17, 2017
|The Optical Tube Assembly just about complete. The|
altutude bearings need varnish and the Ebony Star laminate.
|The rocker box assembled with clamps to check|
the "fit". It's great!!
|The "strings" and intermediate ring. Works perfectly.|
|The "strings" tension is adjusted via a turnbuckle.|
Thursday, June 8, 2017
Wednesday, June 7, 2017
Tuesday, June 6, 2017
|Bob's 16" is coming along. Here, the 6-point flotation mirror|
cell is affixed to the mirror. I wait 24-48 hours for the silicone to cure.
|Bob sent along a Protostar spider to integrate with his "remake"|
I've mounted the focuser a bit to the "horizontal" so the eyepiece
is easy to access when the telescope is higher in the sky.
Note the focuser bracket to the left of the spider.
Saturday, June 3, 2017
|With "big" mirrors, like Keith's 17.5" I like to make a wood box.|
|The rocker box and mirror box. note that the mirror box|
nests into the rocker box. Great for shipping, storing and moving.
|The Upper Tube Assembly fits into a standard 28" square box.|
|Keith 17.5" F4.5 truss telescope all packaged|
up and ready to ship. Whew!!!
Thursday, June 1, 2017
|Keith's 17.5" will be completed tomorrow. I'll start packaging up|
the telescope on Saturday. It's rather easy to manage when dis-
assembled -- otherwise it's a BIGGY!! Nice.
|Detail of the mirror box and rocker box. The primary has|
yet to be center marked with a donut. I'll do that tomorrow.
|All of my telescopes include a "custom mirror cover".|
|Detail of the mirror box. Note the 1.25" "struts" for a nice rigid assembly.|
|The mirror sits on a 6-point flotation cell.|
|The focuser is a 2-speed 2" Moonlite with compression ring. The|
spider is an Observatory-Grade 4-vane curved-vane Destiny.
|My good buddy Jim dropped by and snapped this photo of yours truly and|
Keith's telescope. To the left is a 12.5" for a high school astronomy club.
In the foreground is a 13.1" string-strut F4.5 (for sale).