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ET1 - Short 2" Extension Tube

Provides 1 3/8" of additional focus travel to  the rear. Uses compression ring.

#ET1 - $29



ET3 - Deluxe 2" Extension Tube

Provides an additional 2.26” of  back focus. The 2” receptacle is 1.6” deep so if the item you are inserting is longer than 1.6”, add the difference to 2.26” to determine the actual amount of extension. Made in the USA on our HAAS cnc machines, this all aluminum extension tube has a rubber grip and uses a brass compression ring. The 2” insert tube has a 2” filter thread and is beveled which  improves the snugness of the fit when the focuser lock screw is tightened. Works well with our FA2 1 1/4" adapter.

#ET3 - $49



ET475 - Long 2" Extension Tube

Same as ET3 above but provides a full 4.75" of  extension. For use only with our binoviewing telescopes in place of a  threaded extension for more convenience.

#ET475 - $49



FA - 1.25” ‘High Hat’ Adapter

A squared 1.25" eyepiece adapter  that fits 2" focusers. Provides additional focus distance from  primary when using 1 1/4" diagonals and eyepieces needing to focus  further out. Also  has camera t-thread for attaching cameras to the telescope.   Single set screw.

#FA - $19



FA2 - 1.25" Compression Ring Adapter

High precision cnc machined 1.25” adapter for 2" focusers or diagonals. Uses a compression ring to safely hold eyepieces and has the  insert safety groove on the outside. Knurled top and threaded for filters.

#FA2 - $29


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 or call (530) 823-7796 for more information