SVX090T

Product Description

This is our latest 90mm apo triplet figured in our shop here in Auburn. These are the sharpest 90 mm telescopes we have ever offered. 

The imaging version is currently $400 additional, and it includes $498 worth of accessories. The accessories are: Stellarvue's SFFX-1 Photographic Field Flattener, TP013A Losmandy-style rail, two cnc-machined aluminum risers. These items will allow balance and space when a camera is added for imaging, without them the telescope will be back-heavy.  

The Stellarvue SVX090T features a 90 mm f-6 (540 mm focal length) fully multi-coated, 3-element objective lens with a super low dispersion center element. 

Optics: SVX90T is rated at .96 Strehl or higher as measured on our Zygo Phase Shifting Interferometer in red light. Visit our SVX Optics Page to learn more about this process.

Availability: We begin the production of all SVX objectives one year ahead of time so while it takes up to a year to perfect each objective, we usually have several lenses available when you order. This means we can generally deliver this telescope within one or two weeks depending on the availability of focusers. Call us for more specific information on delivery time estimates for the telescope and focuser you are looking for. (530) 823-7796.  

Which version of this telescope do I need? This telescope is very popular among visual users since it is as easy to transport as our 80 mm but has a significant light gain and resolution advantage. If this telescope will be used visually, order the standard version of this telescope and whatever mounting rail you will need to attach it to your mount. If you plan to image with this telescope, select the "Imaging upgrade version." 

 

What is included? 

The SVX090T standard/visual 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 hinged aluminum mounting rings. 
• Your choice between the Losmandy style TP009 or the Vixen Style TP012 mounting rail (*This can be specified in your order notes).
• Handle: The Stellarvue #HAN-2 handle is included.

The SVX090T imaging upgrade version has all of the above and also includes:

• A heavy duty, thickly padded C-19 Travel case instead of the C20. The C19 (shown pictured to the right) allows the telescope to be stored with risers and rail in place. The optional waterproof, American-made SKB hard case with think tank dividers may be selected for an additional cost. 
• Your choice between the Losmandy style TP013 or the Vixen-Style TP012 mounting rail (*This can be specified in your order notes).
• Handle: The Stellarvue #HAN-2 handle is included.
• Two heavy duty cnc machined aluminum 2 1/2" risers.
• SFFX-1 photographic field flattener.
  
• Bahtinov mask to aid in focusing.

The imaging version is valued at $557.95. It is only $400 when ordered as an option above with the telescope. 

More Information:

SVX90T Manual

SVX Optics     

Light gathering and magnification power: Although Dawes limit states maximum power for telescopes under good conditions is about 213 powers 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!

Specifications:

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. The telescope comes with a Zygo Interferometric Test Report taken in red light at .97 Strehl or better. 

Dimensions: Telescope is 17 3/4" long with focuser racked in, eyepieces adapters installed, and dew shield retracted. 20 1/4" with dew shield extended. Main tube is 4 1/8" in diameter. Dew Shield is 4.77" in diameter, 6 inches long. 

Weight: Telescope tube weighs 8 lbs. Dual rings weigh 2 lbs. Risers weigh .8 lb. Rail weighs approximately 1.5 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. Optional Feather Touch or Moonlite Nitecrawler focuser options available at additional cost. 

Case: Standard/visual 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. The SVX90T operates natively at f-6 so if a reducer/flattener is used it can work with APS-C and smaller sensors. Better full frame performance with a reducer-flattener is attained with the SVX102T.