SVX80T-3SV Operators Manual: Click here for our online manual SVX80T-3SV
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Premier Stellarvue Optics! It is well known that the Stellarvue 80 mm triplet is one of the highest rated 80 mm telescopes on the market. With that being said, we have taken the optical accuracy even higher in this new SVX series! These are the telescopes to buy if you wish to view the universe both visually and photographically. SVX series Apochromatic Telescopes use objectives that have the highest optical ratings as measured and documented on our Zygo Phase-Shifting Laser Interferometer. SVX series optics are rated at .98 - .996 Strehl with excellent optical correction for aberrations commonly seen in mass produced optics. To attain this level of optical accuracy it is necessary for us to go beyond machine polishing. Special tools are made and experienced opticians hand figure objectives here in our optical shop in Auburn California. While our former models (without the X designation) were all excellent coming in at .95 Strehl or higher, SVX series telescopes are even more exceptional, placing 98 - 99% of the light precisely where it should be. Stellarvue Premier (X) Series refractors are for the astronomer who recognizes the best when they see it. Each SVX series refractor comes with a Zygo interferometric test report taken in our shop, documenting the accuracy of your objective!
The SVX80 is the wide field imaging system to buy if you want the best performance both visually and photographically. This system comes with an extremely high Strehl (highly accurate) triplet objective for the ultimate visual experience. Also included is a matched SFF4 field flattener that threads onto the 3" Stellarvue focuser for imaging. This system uses an over-sized 3" focuser that eliminates the vignetting seen when using full sized ccd and DSLR Sensors and a 2.5" focuser. This focuser is robust, smooth and stable.
Also included are Stellarvue's new risers and a Losmandy-sized mounting rail. The risers are necessary to position the telescope and camera in a balanced configuration. The visual/photographic system is specifically designed for imaging and has American made hardware with rings that bolt directly to the tube completely eliminating any felt flexure. The heavy duty 3" focuser is also hard mounted to the tube with a highly accurate rotator. This maintains alignment better than many rotating focusers on the market. The SVX80T-3SV comes in a heavy duty, thickly padded C18 case that holds the telescope, riser blocks and rings as one unit. Merely take it from the case and slide it onto your mount.
Each lens focuses light precisely and in addition the extreme broadband coatings on each surface enhance it even further. Using it visually, the stars appear vivid and the background, velvet black. Since these coatings transmit more than 99% in the visual spectrum and far above and below it, reflections seen on CCD images are eliminated. The relatively fast speed and high Strehl optics make the 80 apo an excellent wide field imaging telescope while the visual performance is simply stunning.
Tube and dew shield: It comes with an aluminum tube and dew shield that is finished in Instrument White powder coating. The dew shield is fixed and the dust cover threads into place.
Internal tube treatment: The inside of the main tube assembly is painted "ultra flat black" and the focuser is baffled to eliminate any tube wall reflections.
The SFF4 field flattener threads onto the draw tube. Simply un-thread the 2" visual back and thread the SFF4 in its place. The flattener is included and optimized to work with DSLR cameras that have an over-sized 48 mm t-ring. This is a modular flattener that can be used with various optional adapters allowing it to be used with CCD and CMOS cameras that may have a different back-focus. If your camera has a different back focus, call us. We can advise you on what you need to use this flattener with your camera. In most cases, we can also modify this flattener so it will work with your particular camera without the need for you to purchase expensive custom adapters.
The combination of the 3" draw tube on this telescope and the large flattener results in a field with practically zero vignetting when compared against other 80 mm telescopes. This is the reason we provide the flattener with the SVX80ST-3SV. It gives the best performance when using cameras with sensors of all sizes up to full frame!
Please Note: We no longer offer a reducer-flattener for this system. This is the sharpest visual 80 mm f-6 refractor and when used with the included SFF4 photographic field flattener it is an outstanding, full frame 480 mm f-6 astrograph.
For visual use we highly recommend the Stellarvue Optimus eyepieces and our 2" quartz mirror star diagonal. This will provide you with the widest, sharpest field of view and maintain the extremely high contrast this apo lens delivers.
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.
4 Reviews Hide Reviews Show Reviews
I've imaged several objects now with my SVX80T using the stock flattener and the .74x reducer/flattener. I use an ASI1600 mono camera with it. I'm really happy with the performance of this scope and expect to own it for many years. It's a perfect complement to my SVA130T and gives great wide field performance. Performance with the stock flattener was excellent at the specified backspacing. The .74x reducer/flattener is a little more sensitive but after I got it dialed in on spacing, it is a great performer and makes the scope very fast. The 3" focuser is excellent and the rotator has very tight tolerances and maintains alignment very well when rotating your camera to the desired angle. I highly recommend one of the Optec ThirdLynx controllers for the focuser. Vignetting is practically zero (if any) with my chip. The build and hardware is of the highest quality. Stellarvue service is also top notch. I sold my old scope through SV’s certified program which is a great benefit.
Received this three days ago and had a clear but moonlit night to test it out finally. Imaged Heart Nebula in Ha and the result was stunning. Pinpoint stars across the entire field and fine details visible in the nebula. If you are looking for a top quality imaging platform this is it. Rock solid construction with threaded connections from the back of the scope to the camera.
I had this scope out the other night during one of the few non-rainy evenings we've had recently in Santa Cruz, CA. I used it first in visual mode without the .74 field flattener. The wide field view of the Orion complex was spectacular! The stars were pinpoints of light against a very dark background. The contrast was amazing, as it should be for a device measured to have a Strehl ratio greater than 0.98. Next, I removed the visual back and attached the 0.74 flattener/reducer followed by my camera, a QHY168C color CMOS camera with a 16 MP APS-C chip (28mm diagonal). As far as I could tell from the test shots I took, stars were pinpoint out to the edge of the sensor's image circle. Once I learn how to properly focus the camera using the tools available in the acquisition software and record the images in full Raw16 mode, I will post some color pictures. My only minor criticism of the hardware is that the 3" Stellarvue R/P focuser is not as smooth as the Feathertouch focuser on my other Stellarvue refractor. I plan to install an Optec motorized unit to replace the manual focusing knobs in order to get a more precise focus. But I am very happy overall with the optical performance of the OTA. Thanks for the extra figuring you Stellarvue people do to achieve scopes with exceptional Strehl ratios.
Just recieved the scope yesterday. Nicely packed. Had a quick look last night and Sirius was a nice blue with no hint of CA. Beautiful optics. The fit and finish of this scope is top notch. I did need to tweak the focuser a little, but now it operates smoothly. It had a bump to it when focusing in a few spots. The whole rig is extremely solid with the fixed rings. The risers do push the scope out a bit, so a little extra counterweight is needed, which is fine on an equatorial mount. I really like that all the camera attachments are threaded, very sturdy. Now I just need to wait the requisite time for the clouds to disperse so I can put a camera on it.