This is the former model of our top rated, light weight 4” f-7. (714 mm focal length) air spaced apo triplet refractor. These are the last of the SVR102T's cherry picked and available only through Stellarvue direct. Read Dennis DiCicco's review of the SVR102T as it appeared in Sky and Telescope Magazine.
Our new version, the SVX102T-R is hand figured in our shop to .98 - .99 Strehl or higher. This former version which is machine figured is .95 Strehl or higher, still quite respectable. This is a great opportunity to pick one of these up direct from Stellarvue while supplies last. This telescope will be shipped free within the continental United States.
The SVR102T employs a fully baffled, lightweight carbon fiber tube making it one pound lighter than the aluminum version. The optical tube assembly is 8.8 lbs and rings weigh an additional .8 pounds each. The focuser unthreads resulting in a tube assembly that is only 19.75” long, well within airline carry-on size limits. Now you can easily take this excellent apo refractor on the plane with you! The certified 101.5 mm clear aperture optic comes with its own American test report:
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. 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 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.
To compare the differences between an aluminum tube and carbon fiber tube, visit our comparison page.
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.
Standard or Optional focusers" The telescope comes standard with our 2.5" dual speed Stellarvue F-SV25B focuser. This is as good as it gets with rack and pinion 2.5" focusers. You may also upgrade to our 3" focuser for more flexibility if you plan to image with the telescope.
Optional 3" Stellarvue visual/photographic focuser: Many years in the making, our smooth and stable dual speed focuser provides about 4.5" of travel. This focuser is perfect for visual use as well as imaging. The rear of the draw tube is threaded to accept our dedicated SFF4 photographic field flattener. The Stellarvue focuser is a heavy-duty rack and pinion unit designed to carry a higher capacity. It has an ultra-smooth (8.5:1 Ratio) fine focus control to attain perfect focus every time. An internal brake system and separate tensioner allows the user to adjust capacity. The focuser is fully rotating with a wide groove for smooth and precise rotation. In addition, the Stellarvue 3" focuser has a capability that other 3" focusers do not have, it will accept our new .74X reducer/flattener. This new reducer actually threads inside of the Stellarvue 3" focuser. It will not fit or thread into the others. This new reducer/flattener will provide a wider field with an f-stop reduction from f-7 to f-5.25. All of the features add up to one of the finest dual speed focusers available today.
Motorized Focuser Options: The Optec Focus Lynx motorized control is easy to install and very user friendly. Turn a knb and it is motorized. Turn the knob again and you have fine and coarse manual focus control. More Stellarvue users have this control for its accuracy, software support and ease of use. Learn more at the Optecinc website.
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 TP010 rail for telescope mounts using the Vixen style rail or use the optional TP006 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.
Free shipping: Order now and when ready the telescope will ship free to the lower 48 states only. Shipping will be either UPS or Fed Ex ground, whichever has the lowest rate.
OBJECTIVE LENS: 101.5 mm clear aperture, 714 mm focal length (f-7), air spaced apochromatic triplet using an Ohara FPL53 center element. .95 Strehl or higher. American Zygo interferometric test report generated at Stellarvue on your lens will be included.
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.
DEW SHIELD: 5” (126 mm) diameter, 9” long retracting carbon fiber dewshield with cap.
DIMENSIONS: 19.25” long in travel mode (focuser un-threaded), 24” long with focuser in place and dew shield retracted; 29” with dew shield extended.
WEIGHT: 8.8 lbs with 3” focuser, 2” and 1.25" adapters. Rings add .8 lb each. (Note: Aluminum tube version is about 1 lb heavier).
FOCUSER: 2.5" or 3” Stellarvue rack and pinion focuser. 2" and 1.25 adapters included. Focuser draw tube is threaded for SFF3 field flattener.
FINDER: Optional. We carry the F001 red dot finder and the F002 multi reticle finder.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.
PLATE/RAIL: Optional. We recommend the 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.
CASE: C009S Heavy Duty Travel Case
DIAGONAL: Optional. Please note, you can purchase our best 2" diagonal upgrade above and save $50. The upgrade diagonal is the same as the D1040Q deluxe quartz dielectric diagonal
LIGHT GAIN: 213X (human eye = 1)
IMAGE CIRCLE: with SFF3: 43mm
IMAGE CIRCLE: with .8X Reducer/Flattener: 25mm