This blog contains photos, descriptions and comments about our telescopes. Please take a minute to make comments. Make suggestions and feel free to email me at densteele@dobstuff.com any time -- Dennis K6KRV (densteele@dobstuff.com)
Thursday, January 31, 2019
Jim's 12.5" F4 OTA Taking Shape....
Tuesday, January 29, 2019
Jim's Conical Primary Mirror...
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Conical mirrors are not at all usual. Here's a 12.5" version. They are mounted on the mirror cell with a simple 1/2" center bolt. Very nice. |
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Note the conical mirror is thinner at its edge and gets thicker and heavier at the center. The flat spot, in the center, is how it settles onto the mirror cell. |
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Mounting hardware and instructions. Easy!! |
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The primary mirror in place on the mirror board. |
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The rear of the mirror board. Rubber feet for putting the OTA on the ground |
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An interesting view of the conical mirror installed on its cell. |
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The mirror cell on the mirror board. The collimation bolts are 5/16" with large knobs for easy adjustment. |
Monday, January 28, 2019
Jim's 12.5" Telescope ...
A Neat Find . . .
Sunday, January 27, 2019
A Note from Eric in Fairview, North Carolina....
Hi Dennis,

Eric
Friday, January 25, 2019
And More on Jim's 12.5" Telescope . . .
Thursday, January 24, 2019
A 12.5" "String-Strut" Telescope for Jim....
Sunday, January 20, 2019
A 12.5" Mirror Cell for Zane...
Saturday, January 12, 2019
Rancho Mirage Observatory ....
Friday, January 11, 2019
Hello There Joe...
Wednesday, January 9, 2019
16" Truss for Joe . . .
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While working on Joe's 16" telescope I made some end-tube rings for his 6" reflector. They're made with Baltic birch and stained Ebony. |
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The 16" mirror and cell. No clamps, just a bit of silicone at 120-degree intervals on the mirror cell. Note the eyepiece tray. |
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A beautiful F4 primary mirror make up this extra nice telescope. |
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The focuser is a Starlight Instruments "Feathertouch" with integrated Paracorr. |
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Here the "truss section" has been removed for ease of transport, storage and assembly. Note the encoders for Joe DSC system. |
Monday, January 7, 2019
16" Kit for Eric -- Complete...
Tuesday, January 1, 2019
Tim and his 14" Telescope on New Year's Eve...
Dennis,

Tim
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