The SVR102T is an extremely high performance, light weight 4” f-7. (714 mm focal length) air spaced apo triplet refractor. This version, with our exceptional Stellarvue focuser is our most popular telescope. Many experts have pointed out that the Stellarvue 102 has exceptional optics. Read Dennis DiCicco's review of the SVR102T as it appeared in Sky and Telescope Magazine. It comes standard with our new 2.5” Stellarvue dual speed, rack and pinion focuser with 2” and 1.25” adapters. This is our latest lens design featuring a certified, high Strehl objective. Dedicated photographic field flatteners make this not only the best 4” visual scope but an outstanding imaging platform as well.
The SVR102T-25SV is the standard version of this new telescope. The fully baffled, lightweight carbon fiber tube produces a telescope that is very light. The ota is 9 lbs and rings weigh an additional .8 pounds each. The focuser unthreads resulting in a tube assembly that is only 20.25” long, well within airline carry-on size limits. Now you can easily take a world class apo refractor on the plane with you! The certified 101.5 mm clear aperture optic is essentially perfect and comes with our interferometric test report showing it is .95 Strehl or higher. This is as good as it gets which means you will see or image everything the atmosphere will allow! Like all Stellarvue telescopes, this instrument is triple tested including a star test by Vic Maris.
The Stellarvue SVR102T has been designed as our best dual purpose 4” telescope for both visual and photographic use. It delivers stunning visual performance thanks to its high Strehl, fully multi-coated objective. Photographic performance with cameras is excellent with the addition of the photographic field flattener. This is among the sharpest 4” class telescopes ever offered. See the Sky and Telescope magazine review of the SVR102T. Also, see the NEAF video that features the 102T.
Fully multi-coated apochromatic triplet objective: Using a 101.5 mm f-7 apochromatic triplet objective, with an Ohara FPL-53 center element, this telescope provides extremely high contrast and reflector-like color correction. This triple tested lens is as well corrected as any a 4" apo triplet we have offered and it comes with an interferometric report to prove it. To further enhance this high level of contrast, extreme broadband multi-coatings are used on all six air-to-glass surfaces. This boosts contrast, making the stars appear vivid and the background velvet black. These coatings transmit light above and below the visual spectrum. This is important to minimize reflections seen on ccd images.
Lightweight carbon fiber tube assembly: The thin wall carbon fiber tube looks sharp and matches the black anodized aluminum fittings giving this telescope a very high-end, classy look. The total weight of the ota with 2.5” focuser is only 8.8 pounds, making this the lightest 102 triplet we have ever made. The dew shield retracts reducing the length of the telescope when being stored. When the telescope is used, this dew shield may be extended to minimize dewing of the objective at night and to serve as a glare shade during the daytime. Since the focuser can be easily un-threaded, the telescope length can be reduced to airline carry on size. This means you can now carry your high end apo on the plane with you.
Internal tube treatment: The main tube interior is painted ultra flat black inside and is properly baffled to eliminate any tube wall reflections. Reflections in the optical path are further reduced using edge blackened objective elements. All of these methods are used to preserve the outstanding contrast of this exceptional apochromatic lens.
Dual speed, rack and pinion focusers: This telescope comes with two excellent focuser options. Both have a higher lifting capacity than Crayfords and the larger ID means the vignetting is eliminated. The ultra-smooth coarse/fine focus knobs (10:1 Ratio) and internal brake system give the user complete control when focusing and imaging.
Aluminum hinged rings: The SVR102T comes with our American made cnc aluminum mounting rings. Each ring has five screws top and bottom. Threaded holes are 1/4-20. There is one center hole, two holes spaced 1.5" apart and two holes spaced 60 mm apart. Use the optional TP-10 rail for telescope mounts using the Vixen style rail or use the optional TP6 for mounts that use the larger Losmandy style rail.
C009S Heavy Duty Case: This is our heavy duty, thickly padded Nylon hard case with heavy duty zippers. These cases are substantially more durable than the thin walled Chinese hard cases.
What else do you need? In addition to the supplied accessories, you will need a star diagonal, eyepiece(s) and a mount with tripod and mounting plate.
Light gathering and magnification power: The purpose of a telescope is to gather light and magnify the apparent size of the object being viewed. A 4” refractor gathers 213 times the amount of light of the naked eye. This will reveal faint objects in space. Magnification power (the increase in relative size of the object being viewed) is dependent upon the eyepiece being used. Different eyepieces provide different magnification powers. Since this telescope uses a highly accurate, hand figured objective lens and is triple tested in the USA, these telescopes are free of coma and astigmatism seen in many import telescopes. This provides sharper details when viewing at higher powers. Dawes limit, which is the stated maximum power for telescopes under good conditions is about 250 power for a 4” telescope. But don't be surprised when you exceed this power on a steady night. This is a true apo triplet capable of very high power when conditions permit. Check the Recommended Accessories section to make the best choice for eyepieces.
Two year warranty and Stellarvue Service: Stellarvue telescopes and accessories are covered by a two year warranty. But it does not stop there. Since we are a telescope maker, we can repair your telescope for a nominal fee years after it goes out of warranty should you accidentally drop it. Buy a Stellarvue with confidence. Our customer care is legendary.
Objective Lens: 101.5 mm clear aperture, 714 mm focal length (f-7), air spaced apochromatic triplet using an Ohara FPL53 center element. Meets the SV standard of 95 Strehl or higher.
Tube Assembly: Lightweight, fully baffled, carbon fiber tube and dewshield. Painted ultra flat black inside. 105 mm diameter main tube. (Note: We can make this telescope with an Aluminum tube and dewshield for the same price. If you are interested in getting this telescope, contact us at (530) 823-7796).
Dew Shield: 5” diameter, 9” long retracting carbon fiber dewshield with cap
Dimensions: OTA: 20.25” long in travel mode (focuser unthreaded), 24” long with focuser in place and dewshield retracted; 29” with dewshield extended.
Weight: OTA: Only 9 pounds with 2.5” focuser and 2” adapter. Rings add .8 lb each. (Note: Aluminum tube version is about 2 pounds heavier).
Focuser: 2.5” Stellarvue rack and pinion focuser. Focuser drawtube is threaded for field flatteners and comes with 2” and 1.25” compression ring adapters. (Note: We can make this telescope for you with the larger 3" Feather Touch focuser for $400 additional. Just select the option at the top of this page).
Rings: American made R105 set with five 1/4-20 threaded holes top and bottom. Holes are spaced 1.5” and 60 mm apart respectively, with one in the center. Made on Haas cnc machines.
Case: C009S Heavy Duty Travel Case
Mount and Tripod: Optional. (Note: You can save $25 - $100 when you order the recommended mounts above. Just click the options at the top of this page. The M2A is a very easy to use alt-azimuth mount and tripod that is made in the USA. It is extremely smooth and stable. If you prefer an automated, go-to mount that will track we recommend the Celestron VX option.)
Diagonal: Optional. (Note: You can save $50 when you buy our best 2" star diagonal with the telescope. Just click the option at the top of this page).
Field Flattener: Optional
Light Gain: 213X (human eye = 1)