Astromania 2" SCT 90-Degree Mirror Diagonal with 93% reflectivity across visible spectrum-fits rear cells of Schmidt-Cassegra and includes an adapter

2" SCT Mirror Diagonal
The wider diagonal captures more of the telescope's light cone, perfect for viewing faint, deep sky objects like nebulae and galaxies.

The All Metal Diagonal Body
The all metal diagonal body is CNC machined, make the product more durable. A superb diagonal offering excellent mechanical and optical quality.

SCT Female Thread (2", 24 TPI)
The SCT Adapter has a standard SCT female thread (2", 24 TPI), you can use your refractor diagonal with all telescopes having a standard SCT thread for which you can attach this diagonal directly to Schmidt-Cassegrain telescopes and many Maksutov-Cassegrain telescopes.

Brass Ring Design
Improved attachment design features a brass clamping ring which does not mar, and provides a more secure connection.

90 Degree Comfortable Observation
It can be used to observe objects with comfortable angle as you observe from above; it's convenient to look at the zeni-th of the sky and close to horizontal observation.

Thread for Eliminate Light
Effectively reduce stray light interference, not only improve the brightness of the image, but also effectively reduce the dark edges formed, the edge details of the image are clearer.

•  93% Reflectivity & A 1/10 Wave Mirror & Dielectric Coatings
93% Reflectivity & A 1/10 Wave Mirror
The 2" SCT diagonal features dielectric coatings with 93% reflectivity across the visible spectrum and a 1/10 wave mirror for bright and true images.

•  Dielectric Coatings
The 2" SCT diagonal features dielectric, comes with dielectric coatings for the most light transmission possible. The residual stress in the plane mirror which can occur with the dielectric vapour deposition process is ruled out here.
 

Main Features:

•  High optical lens transparency
•  A standard SCT female thread (2", 24 TPI)
•  Standard 2 " diameter fits for 2" eyepiece and telescope
•  The all diagonal body is metal
 

What Is in Package

1

1x Dielectric mirror diagonal

2

1x SCT adapter

3

1x Dust proof cover

4

1x Dust proof plug

2''SCT 90-degree mirror diagonal with 93% reflectivity across visible spectrum

2" 45-degree high-quality erecting prism diagonal for telescope

2'' 90-degree mirror diagonal with 93% reflectivity across visible spectrum

1.25" 45-degree diagonal prism optical prism inside rather than a mirror

2'' 90-degree diagonal 99% 

Connection (to the telescope)

2''

2''

2''

1.25''

2''

Viewing posture

90°

45°

90°

45°

90°

Coating of optical system

Dielectric

Fully-multi-coated

Dielectric

Fully

Dielectric

Correction of vertically revers-ed image

-

Yes

-

Yes

Yes

Correction of horizontally revers-ed image

-

Yes

-

Yes

-

Ring clamp

Yes

Yes

Yes

-

Yes

Filter thread

Yes

Yes

Yes

Yes

Yes

Type of build

Diagonal mirror

Amici prism

Diagonal mirror

Amici prism

Diagonal mirror

Type

Deviating optics

Deviating optics

Deviating optics

Deviating optics

Deviating optics

Other contents

SCT Adapter

2" to 1.25" Eyepiece Adapter

-

-

Extension tube