Wednesday, September 30, 2020

Completed -- Bob's 6" F4.....


Bob's 6" F4 is only 21" long. I borrowed the
table for my 10 F4 to see it looks and work.
JUST RIGHT.. Note the chair. I'm beginning
to build these for sale in the near future.
The beautiful primary mirror mounted in
its original cell. The label says "Keim Precision
Mirror Corporation" in Glendale, CA.

Along with the full light/dew shield Bob asked
for, there's a "dew solution" on the secondary.
Note the 3-vane curved-vane spider.

Collimation is "right on"!! That a Glatter "blug"
and 2" laser collimator.

Friday, September 25, 2020

More on Bob's 6" F4 . . .

With Bob's focuser mounted and the spider/secondary in place,
it's time to set the length of the struts -- and then test the
telescope under the stars.


Thursday, September 24, 2020

A 6" F5 for Joe in Palos Verdes . . .

Joe's 6" F5 coming together. This will be the OTA only
with a dovetail to mount on an EQ mount.


Tuesday, September 22, 2020

A Fan for Jonathan's 10" Telescope . . .

A  single fan for Jonathan's 10" F4.5 Dobstuff Telescope.

An "example" of the fan installation.


Saturday, September 19, 2020

A Note from Jonathan in Bellevue, Washington. . .

 Hi Dennis,

I've been using your 10" f/4.5 scope for a bit over a year now.  I'm really happy with it!

The mirror is great and really easy to collimate.  The movement is very smooth, and the balance is nice too; I haven't had any issues changing from light to heavier eyepieces. The telescope is the perfect height for observing while sitting, and light enough to move during a session if needed for tree-dodging. 

Dennis was great to work with as well; he answered tons of questions I had, and was very responsive and helpful.

I have made a few tweaks to the scope: I put a few old CDs around the azimuth bearing to make it a bit smoother. I made a cover for the secondary using a large plastic bottle, and I made the full light shield at the top since I have to contend with a lot of lights when I observe at home.

Thanks! Jonathan

Friday, September 18, 2020

More on Bob's 6" F4 . . .

The mirror cell is a good fit. check out the 12"
rule for scale. The OTA will be about 20" long!!


Sunday, September 6, 2020

10" F4 with Nova Optics For Sale ...

Up for sale is my "venerable" 10" F4 with Nova primary mirror and Antares secondary, Moonlite 2-speed focuser, primary dew shield with mirror cover and red-dot finder. The images through this telescope are picture-perfect!!  $1295 including CONUS shipping.

Contact me any time at 650-315-6578 or email

Thanks, Dennis

Wednesday, September 2, 2020

10" F6 Completed...

Completed is a 10" F6 that I intend using for my personal
telescope (at least for the time-being!!). Note the strings
Moonlite focuser, curved-vane spider and Sky Commander.

The optics are premium Nova primary and Antares secondary.

I like to use a simple red-dot finder while aligning
the Sky Comander and locating an object. Simple,
and easy to use. You can see the string details here.


A Tale of Two 10s...

What does one do when they have "time on their hands". Why, build a telescope of course. I'm nearing completion of my personal 10" F6 with a Nova Optics mirror and Antares secondary. The focuser is a 2-speed Moonlite and the spider is a 3-vane curved-vane Destiny.  It'll sport a Sky Commander later today.

The telescope to the right is a 10" F4 with Nova Optics mirror as well. Same focuser and spider. The difference is striking -- 20" longer in focal length.  This telescope is now "on sale" -- so contact me if interested.  Dennis