Diagonals and Prisms

Vernonscope 1/20th Wave Quartz Star Diagonals

This diagonal is built in the USA around a quartz flat with reflective coating and a protective quartz overcoat. The 2" diagonal will take 2" eyepieces or 1.25" with an adapter.

Mirrors are guaranteed to have interferometry results of at least 1/20th wave PV (Peak to Valley Measurement).  Each quartz piece has a serial number and comes with an interferogram with the results of the surface testing for the quartz in your diagonal.

1/20th Wave 2 Inch Quartz Star Diagonal Silver Coating

2" Silver Coated Diagonal

The cost for the 2 inch diagonal is $795 for Silver coated.

 

The cost for the 2 inch diagonal is $815 for Gold coated.  

1/20th Wave 2 Inch Quartz Star Diagonal Gold Coating

2" Gold Coated Diagonal

1/20th Wave 1.25 Inch Quartz Star Diagonal

This diagonal is built in the USA around a quartz flat with silver reflective coating and a protective quartz overcoat.  The 1.25" diagonal will take 1.25" eyepieces.

Mirrors are guaranteed to have interferometry results of at least 1/20th wave PV (Peak to Valley measurement).  Each quartz piece has a serial number.  Each diagonal comes with an interferogram with the results of the surface testing for the quartz in your diagonal.


The cost for the 1.25" diagonal is $549.

1.25" Silver Coated Diagonal


2" Erect Image Amici Prism Diagonal

This 2" and 1.25" image erectors have a prism in the base housing and are designed to correct the inverted image. This design works great with refractors like the Master Birder. Birds and sail boats are not inverted. The moon is also in the correct orientation as we see it with our own eyes. Caps included.