This is our latest 90mm apo triplet figured in our shop here in Auburn. The standard version includes dual mounting rings, 3" Stellarvue dual speed rack and pinion focuser, 2" and 1.25" adapters, two finderscope shoes and a Stellarvue deeply padded case. The imaging version is currently $400 additional and it includes $498 worth of accessories.
The Stellarvue SVX090T-3SV features a 90 mm f-6 (540 mm focal length) fully multi-coated, 3-element objective lens with a super low dispersion center element. The SVX series apochromatic telescopes use objectives that have our highest optical ratings as measured and documented on our Zygo Phase-Shifting Laser Interferometer. 90 mm SVX series optics are rated at .98 - .996 Strehl in red light. To attain this level of optical accuracy Stellarvue opticians meticulously figure objectives in our shop using the interferometer, to attain the highest level of optical performance. They are about much more accurate than our former SV models. Each SVX series refractor comes with a Zygo interferometric test report taken in our shop, documenting the accuracy of your individual objective.
Waiting Period: Since we build one year ahead of time our estimation of the delivery date for telescopes ordered now is in only about 30 days. It may be sooner or later based on whatever we need to do to reach our SVX optical standard. One thing is certain, the sooner you order, the sooner you will receive yours.
The SVX090T standard version comes with
- A heavy duty, thickly padded C-20 travel case.
- 3" Stellarvue dual speed focuser with 2" and 1.25" compression ring adapters and dual finder-scope shoes
- Heavy-duty cnc machined, 1" thick aluminum mounting rings.
- A heavy duty, thickly padded C-19 Travel case allowing the telescope to be stored with risers and rail in place.
- TP013A Losmandy-style rail (Optional vixen style rail may be substituted for the Losmandy-style rail if needed).
- Two heavy duty cnc machined aluminum risers
- SFFX-1 full frame field flattener
If you prefer other focusers you can specify either the Feather Touch 3" dual speed focuser or the Moonlite Nitecrawler 3" focuser for this telescope by selecting the option at the top of this page. These other options cost more and may extend the waiting period as both are currently backordered. We have both of them on backorder and as these arrive we ship wait listed telescopes to customers based on the date of the order. Here again, the sooner you order, the sooner you will receive your telescope.
SVX90T Operators Manual
Light gathering and magnification power: Although Dawes limit states maximum power for telescopes under good conditions is about 213 power for a 90 mm telescope, you can exceed this power on a very steady night. This is a true apo triplet, capable of higher power when conditions permit.
Two-year warranty and Stellarvue service: We are with you for life. Stellarvue telescopes and accessories are covered by a two-year parts and labor warranty, but our service does not stop there. Since we are a telescope maker, we can repair your SVX telescope for a nominal fee even years after the warranty expires, should you accidentally drop or otherwise damage it, (within reasonable limits naturally). Buy a Stellarvue telescope with confidence - our customer care is legendary!
Objective Lens: 90 mm clear aperture, 540 mm focal length (f-6) apochromatic triplet using an FCD100 center element to provide the highest contrast with excellent color correction both visually and photographically.
Dimensions: Telescope is 14 3/4" long with focuser racked in and dew shield retracted. 17 1/4" with dew shield extended. Main tube is 4 1/8" in diameter. Dew Shield is 4.77" in diameter, 6 inches long.
Weights: Telescope tube weighs 8 lbs. Dual rings weigh 2 lbs. Risers weigh .8 lb. TP013A rail weighs 1.6 lbs.
Focuser: 3.0" Stellarvue dual-speed rack and pinion focuser with 1.25" and 2" compression ring adapters and dual finder scope dovetail shoes.
Case: Standard version comes with the Stellarvue C20 heavy duty, thickly padded case. The Imaging upgrade version comes with the C19 heavy duty, thickly padded case.
Rings: Stellarvue R105SET precision hinged rings. Each ring has five 1/4-20 holes top and bottom, with one in the center and two spaced 1.5” and 60 mm apart.
Diagonal: Optional. You can purchase our 2" Quartz Dielectric diagonal upgrade for only $199 when ordering simultaneously with the telescope. It does not come with a 1.25" adapter since the telescope already has one.
Photographic Field Flattener: SFFX1-90 is included with the imaging upgrade version and optionally available with the standard version. This is our flattener, designed by Stellarvue and made here to work with a variety of telescopes with cameras up to full frame, significantly improving field flatness.
5 Reviews Hide Reviews Show Reviews
SVX90T - The little scope that could:-)
Wow! I was pleasantly surprised by this scope. My first impression was how well built and solid this scope is. This is a good thing since I will be traveling with the scope and doing educational trips with it. My first night out with the scope was under clear Bortle 4 skies. The views took my breath away. The detail in the Orion Nebula and the trapezium was great. The Rosette Nebula showed faint nebulosity. I was able to pick out the galaxies M81, M82, M65, M66, M95 and M96 without issue. I put the Stellarvue 28mm 82 degree eyepiece in the scope and the Perseus Double Cluster and Pleiades looked liked diamonds on a black velvet cloth. I also really just enjoyed scanning the winter Milky Way with the scope. So if you are looking for a small, compact, power house of a telescope. Look no further!
Setting a New Standard
I finally got some decent skies to evaluate my 90. I’ve only used it visually but plans include astrophotography in the future. I’m pleased to report that the view is exceptional.
Stars are pinpoint with absolutely no false color. Same for moon and planets.
Engineering and construction are of the highest caliber. It has the classic ‘built like a tank feeling’. This makes for a slightly heavy scope at 90mm. If there was an option for composite tube rings and dew shield, I would gladly take it to shave a few pounds.
The FSV-3B focuser is seriously smooth and solid. I like that it rotates.
In summary, I am extremely pleased with this scope. Anyone looking for something in the 85-90mm range should have this on their short list.
Thank you for your review. So happy that you love your 90! I just wanted to clarify one thing about the carbon fiber versus aluminum tube. The difference in weight is actually less than 1 lb since the tube is short. We decided to do it it only in aluminum since the weight difference was minimal and the cool down time is faster in aluminum.
Enjoy the views!
Amazing, simply amazing.
Finally got first light with this amazing telescope. It goes without saying build quality, fit and finish, are top notch. What a great experience imaging as well. First test image had zero tilt & perfect stars edge to edge, that's never happened before with a new scope. Back focus was exactly as spec'd. Everything was great right from the start, didn't have to mess with anything. Shot M81 to see how far I could push it and it was barely a challenge for this scope in less than great skies. Great detail in the images and processing time was cut in half by the quality of the subs. Couldn't be happier with this purchase.
I bought 4 used Stellarvue scopes plus a couple dozen new & used other types and brands over the years experimenting to find the right scopes for me. SV’s glass, engineering and craftsmanship is the finest I have ever seen in a telescope, and customer service is exactly what you would want. And it is American made.
This particular scope is now my permanent/forever small scope; replacing it would only be a downgrade. It is the best balance of aperture vs. portability. Perfect for EAA/AP or grab & go visual and fits in airline carry on luggage (vertically not diagonally) with room left over for a strain wave mount, cameras and other gear, plus padding, in case you want to fly with it. The included SV padded case for the imaging version holds the scope sans risers with both the field flattener and a ZWO (or probably Pegasus or other) EAF attached with room left over for a finder scope/camera and cables.
The only way it could be better is if SV set it up for me at night and then took it down in the morning.
It’s the best portable scope ever .