Mirror Diagonal
 


               
          Art No.: ST0201       2" Star Diagonal                                    Art No.: SC0201     2" SCT Diagonal
 
These low-cost 2" mirror star diagonal are of a decent mechanical and optical quality at a bargain price. The body is an all metal (aluminum) construction. A star diagonal mirror to be used with standard 2" focusers on any telescope with sufficient focus travel, like most Refractors and Maksutov-Cassegrains. The 2" barrel with 48mm thread, it is convenient to fits with most brand 2" filter.

Schmidt-Cassegrain Thread Version
Instead of the 2" barrel with this mirror star diagonal features an SCT thread. You can attach this diagonal directly to Schmidt-Cassegrain telescopes and many Maksutov-Cassegrains, as long as there is a SCT thread on the telescope.
Of course both mirror star diagonal come complete with a 1.25" adaptor and brass compression rings for both 2" and 1.25" size.



               
   Art No. : STD201- 2" Dielectric 99% Diagonal                  Art No. : SCD0201- 2" Dielectric 99% SCT Diagonal

The new GSO 2" CNC machined dielectric diagonals offer an excellent mechanical and optical quality, the special feature as follow:

* Optical glass BK7 mirror blank
* Reflectivity 99% dielectric coating in the Deluxe star diagonal mirror
* Housing is an all metal construction

* Brass compression rings both for 2" and 1.25"
* The barrel and the 1.25" adaptor both offer a 2" filter thread
* Excellent mirror surface quality
over 1/12λ


Schmidt-Cassegrain Thread Version
Instead of the 2" barrel with this mirror star diagonal features an SCT thread. You can attach this diagonal directly to Schmidt-Cassegrain telescopes and many Maksutov-Cassegrains, as long as there is a SCT thread on the telescope. Of course both mirror star diagonal come complete with a 1.25" adaptor and brass compression rings for both 2" and 1.25" size.



               
 Art No. : STQ201- 2" Quartz Dielectric Diagonal                 Art No. : SCQ201-  2" Quartz Dielectric Diagonal

If you want the high end mirror star diagonal, this GSO 2" Quartz Dielectric Diagonal Mirrors is you best choose. Quartz mirror offers greater thermal stability, resulting in minimal thermal expansion & contraction. 
 

The feature of Quartz diagonal as follow:

* Optical glass Quartz mirror blank
* Reflectivity 99% dielectric coating in the Deluxe star diagonal mirror
* Housing is an all metal CNC construction

* Brass compression rings both for 2" and 1.25"
* The barrel and the 1.25" adaptor both offer a 2" filter thread
* Excellent mirror surface quality
over 1/12λ


The
star diagonal mirror to be used with standard 2" focusers on any refractor telescope. You can attach this diagonal directly to Schmidt-Cassegrain telescopes or most Maksutov-Cassegrains telescope, as long as there is a SC thread on the telescope.

Schmidt-Cassegrain Thread Version
Instead of the 2" barrel with this mirror star diagonal features an SCT thread. You can attach this diagonal directly to Schmidt-Cassegrain telescopes and many Maksutov-Cassegrains, as long as there is a SCT thread on the telescope. Of course both mirror star diagonal come complete with a 1.25" adaptor and brass compression rings for both 2" and 1.25" size.

 
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