We spent three years designing what we consider to be the ultimate grab and go telescope. This telescope is as light and portable as an 80mm short tube, yet it delivers 90mm of stunning full apochromatic performance.
We wanted to make sure our instrument was devoid of false color, provided excellent definition and a perfect star test. So we chose an apo triplet design using a Fluorite center element. The SV90T Fluorite Triplet
telescopes are highly rated by users.
The SV90T is made at Stellarvue Headquarters and personally star tested by Vic Maris. All 90T telescope orders are being filled on a first come, first served basis subject to the terms of our wait list policy. Quality takes time but the current waiting times are reasonable (months not years). Approximate delivery time for an order placed now is shown here: Availability
All SV90T telescopes come with the legendary Feather Touch Focuser for the most accurate and precise focusing.
Focusers are mounted to our exclusive dual ring rotating collet.
Combined with our field flattener/focal reducer kit, the razor sharp Fluorite optics of the SV90T makes an awesome astro-photographic telescope. Click on the picture above for a larger image of M101.
Objective
Zygo and star tested 90 mm clear aperture, air spaced, apochromatic triplet objective using CaFl2 Fluorite center element.
Optical design and accuracy combined with precise alignment ensures true apochromatic performance.
Tube assembly
All aluminum, fully baffled optical tube assembly using 1/8" wall tubing precision machined and threaded. Objective lens assembly mounted to a push pull flange for accurate alignment. Powder-coated with customized
Stellarvue "Stardust" finishes (white, black, blue and midnight).
Mounting Ring
Aluminum cnc machined deluxe single ring, adjustable with three 1/4-20 threaded holes on the bottom 20 mm apart and numerous 10-32 threaded holes for mounting various reflect and optical finders.
Approximate Dimensions
3.5" diameter main tube and 4.9" diameter dewshield. OTA is 19" long with dewshield retracted and about 23" long when extended. Weight of ota is about 9 lbs.
Focuser
2" Starlight Instruments Feather Touch dual speed focuser with 2.5" travel and refractor brake to adjust tension. Compression rings on focuser and 1.25" adapter.
Finder
Stellarvue deluxe multi-reticle Finder with clear window and deluxe switch
Case
Two optional cases available, both are airline travel size.
Light gain
165
Limiting magnitude
11.5
Magnification
May be used to Dawes limit and above (210X) when the air is steady
All specifications and prices are subject to change without notice.
We often modify designs to improve them. All copy and photographs copyright 2008 and may not be used without permission.
Stellarvue trademarks and service marks, and logos and 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 are patent pending. 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 they may be illicit copies of products we specifically designed. Such products may only be sold by authorized Stellarvue dealers. We encourage all dealers interested in
carrying our specific products to become a Stellarvue dealer. Contact vic@stellarvue.com or call (530) 823-7796 for more information.