Stellarvue Star Diagonals and 45 and 90 Degree Erecting Prisms



	STELLARVUE FORUM

STAR DIAGONALS & PRISMS

Star diagonals are a critical component of any refractor. The performance of an otherwise excellent telescope can be seriously compromised using a diagonal that is misaligned or pinched. We researched diagonal design and fabrication for two years before introducing our first 2” dielectric diagonal. This diagonal is assembled here using aluminum parts that are precision cnc machined. Each D1029ED uses five cushion points to eliminate pinching and an over-sized, highly accurate mirror.

Each diagonal and erecting prism we sell is tested for alignment and will preserve the exceptional quality of your Stellarvue telescope.


CNC machining diagonal parts	D1029ED internal design

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Item

Description

D1029ED

Stellarvue Enhanced 2” Dielectric Diagonal
This is our most popular diagonal. It was designed by Vic Maris and uses a thick, oversized mirror polished to 1/10th wave. The mirror has a protective, dielectric coating with 99% reflectivity. It has a compression ring eyepiece tube and the insert tube has a bevel that will better seat the diagonal in the focuser. The FA2 deluxe 1.25" compression ring adapter is included. Both the two inch insert tube and adapter have filter threads. A rubber grip on the 2" tube allows for easy handling in cold climates. These diagonals are assembled, adjusted and double tested at Stellarvue for perfect alignment and performance. The five point cushion system eliminates pinching in all climates and the prcision cnc machined components assure perfect alignment that stays that way.
#D1029ED $189

D1030s

Stellarvue 1.25” Dielectric Mirror Star Diagonal
Comes with a thick, precision, optical flat mirror with an enhanced 99% reflective dielectric coating. Compression ring holds eyepieces firmly and the insert tube has the safety groove and filter thread. All aluminum construction. Individually tested here for perfect alignment and freedom from astigmatism.

#D1030ED - $99

D1032

1.25” 45 degree Erecting Prism
High quality unit uses compression ring and has a tapered insert tube for better alignment. Provides images that are right side up and correctly oriented. Aperture is about 25mm.

#D1032 - $69

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D1037

2” Correct Image 45 degree Erecting Prism

Our new 2" fully multicoated 45 degree correct image erecting prism will turn your Stellarvue telescope into the ultimate terrestrial scope. Comes with 1.25" compression ring adapter. Use this prism with a large 2" wide field eyepiece for porthole visual views of distant objects, birds, etc. You can get an excellent performance using this 45 degree erecting prism and your Stellarvue ED or Apo refractor.
#D1035 - $209

Stellarvue® designs and handcrafts the finest refractor telescopes and provides programs and experiences to foster a greater appreciation of our natural world and to encourage individual exploration of the universe.

All specifications and prices are subject to change without notice. Designs and materials are often modified to improve them. All copy and photographs are copyright 2013 and may not be used without permission.

Stellarvue trademarks and service marks, logos, product and service names are trademarks of Stellarvue (the "Stellarvue Marks"). Without Stellarvue's prior permission, these marks may not be displayed or used in any manner. Some products may be patent pending and we consider all of our designs proprietary. Stellarvue will take necessary action against any dealer in the USA carrying imitations of our proprietary products. Dealers are warned to check with us first before purchasing similar products as there may be illicit copies of products we specifically designed. Such products may only be sold by authorized Stellarvue dealers. Contact mail@stellarvue.com or call (530) 823-7796 for more information.