Skip to content
FREE SHIPPING FOR ORDERS OVER 500$* Some exceptions may apply
FREE SHIPPING FOR ORDERS OVER 500$* Some exceptions may apply

Diagonals

This is our selection of diagonals. From dielectric mirrors to regular ones. The diagonal is the accessory you need when you own a refractor or a cassegrain telescope. 

 

Filters

$
$
Antares 1.25" 45° Erecting Prism Diagonal (EID45) - Astronomy Plus
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

Antares 1.25" 45° Erecting Prism Diagonal (EID45)

Antares

Antares 1.25" 45° Erecting Prism Diagonal EID45 is a 1.25" 45 degree erecting amici prism for terrestrial viewing and is not recommended for high m...

View full details
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
Antares 2" 90° Dielectric Twist-Lock Diagonal (2MD-DTL) - Astronomy Plus
$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00

Antares 2" 90° Dielectric Twist-Lock Diagonal (2MD-DTL)

Antares

Antares 2" 90° Dielectric Diagonal The Antares 2" 90° Dielectric Twist-Lock Diagonal has multilayer dielectric coating with 99% reflectivity in gre...

View full details
$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00
Antares 1.25" 90° Erecting Prism Diagonal (EID90) - Astronomy Plus
$68.00 - $68.00
$68.00
$68.00 - $68.00
$68.00

Antares 1.25" 90° Erecting Prism Diagonal (EID90)

Antares

Antares 1.25" 90° Erecting Prism Diagonal EID90 is a 1.25" 90 degree erecting amici prism for terrestrial viewing and is not recommended for high m...

View full details
$68.00 - $68.00
$68.00
$68.00 - $68.00
$68.00
Antares 2" 90° Dielectric Diagonal for SCT (2MDS-D) - Astronomy Plus
$163.00 - $163.00
$163.00
$163.00 - $163.00
$163.00

Antares 2" 90° Dielectric Diagonal for SCT (2MDS-D)

Antares

Antares 2" 90° Dielectric Diagonal for SCT 2MDS-D: 2" Mirror Diagonal for Schmidt-Cassegrain thread-on with pressure band retainer and multilayer d...

View full details
$163.00 - $163.00
$163.00
$163.00 - $163.00
$163.00
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00

Diagonal, 2",prism, 45 Degree, SCT (2EID45S)

Antares

Diagonal, 2",prism, 45 Degree, SCT 2EID45S is a 45 degree 2" precision polished correct image amici prism for Schmidt-Cassegrain thread-on that all...

View full details
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00

Antares Diagonal, 2",prism, 45 Degree (2EID45)

Antares

Antares Diagonal, 2",prism, 45 Degree 2" 45 degree correct image prism diagonal, precision polished   In the Box 2EID45 is a 45 degree 2" precision...

View full details
$198.00 - $198.00
$198.00
$198.00 - $198.00
$198.00
$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00

Antares 2" Twist-Lock Dielectric Diagonal for SCT (2MDS-DTL)

Antares

Antares 2" Twist-Lock Dielectric Diagonal for SCT 2" Dielectric mirror diagonal with twistlock, for SCT threads, 99% reflectivity at 546nM. ...

View full details
$177.00 - $177.00
$177.00
$177.00 - $177.00
$177.00
Antares 2" 90° Dielectric Diagonal (2MD-D) - Astronomy Plus
$163.00 - $163.00
$163.00
$163.00 - $163.00
$163.00

Antares 2" 90° Dielectric Diagonal (2MD-D)

Antares

Antares 2" 90° Dielectric Diagonal Antares 2" 90° Dielectric Diagonal with pressure band retainer and multilayer dielectric coating with 99% reflec...

View full details
$163.00 - $163.00
$163.00
$163.00 - $163.00
$163.00
Antares 1.25" 90° Mirror Diagonal (MSD) - Astronomy Plus
$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00

Antares 1.25" 90° Mirror Diagonal (MSD)

Antares

Antares 1.25" 90° Mirror Diagonal The Antares 1.25" 90° Mirror Diagonal provides convenient right angle viewing with refractors and Cassegrains. Th...

View full details
$45.00 - $45.00
$45.00
$45.00 - $45.00
$45.00
Free Shipping

in Canada over 500$+* bf txs

Buy Now, Pay Later

Paybright and Sezzle at Check Out

Target the Right Equipment

Contact us!

Price Match

Find a Better Price? We Will Match it!

Sign Up to Astronomy Plus Newsletters

Subscribe to our Newsletter to be the first to be inform about Promotions, New Products and More!