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Stellarvue SVQ100-3FT Astrograph


Stellarvue SVQ100-3FT Astrograph

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Product Description

The SVQ is a unique, four-element telescope designed for full-frame imaging. It is made on a very short optical tube assembly, well within airline carry-on size limits so you can safely take it anywhere you go. Field is absolutely flat and color correction is virtually “reflector-like” thanks to an advanced optical system using Ohara FPL53 optical glass.

We wanted our quad to be extremely stable to maintain alignment and easily hold the heaviest astro cameras. For this reason, we employ our over-sized 3” dual speed, rack and pinion focuser with high lifting capacity. The telescope comes with threaded camera adapters for both the 42 mm and 48 mm over-sized t-rings. We also have a number of larger, optional adapters available for direct, wide aperture attachment to your full frame camera.

The SVQ is optimized for imaging.  Learn more about in the Amateur Astronomy Magazine review.

Using a visual adapter the instrument can be used with a diagonal and eyepiece. While the overall visual correction of an astrograph is not the same as a high Strehl APO triplet, the SVQ will work as a flat field “richest field telescope” with excellent color correction. 

100 mm f-5.8 Quad made with Ohara FPL-53. Includes a Feather Touch 3" focuser, dual hinged mounting rings, and threaded extension. The SVQ100 now comes with both 42 mm and 48 mm T ring adapters. So you can directly thread your T ring equipped camera directly to the focuser.  These telescopes are assembled and triple tested one at a time. They are currently available but our current inventory is low. The sooner you order, the sooner you will receive yours. The SVQ100 is shipped in a foam lined hard case.

The stock hard case holds the telescope but not with riser blocks attached. An optional C18 case is available as an upgrade for $100 additional if you want a case that will hold the astrograph mounted on riser blocks with rail and adapters included. 

The included photographic adapters will accommodate a wide range of back focus that range from 150 mm to as little as 1 mm. The modular nature of this equipment enables the user to purchase additional M48 extension tubes if you have a shorter back focus on your camera. Adapters with other common thread sizes are available from us depending on individual requirements. For example, we have both the 2.156-24 and 3-24 adapters in stock that mate with the included M69 extension tubes. For more specific information on your particular camera, call us and we can let you know exactly what combination will work best with your particular camera. Remember, this is not a back focus issue that requires precise spacing, the SVQ100 does not need a field flattener. Rather, this is a range in which your camera will focus. Adding or subtracting extension tubes will change where the image comes to focus. It is best to try and hot focus in the center of the focuser's drawtube travel range.  

BELOW: Wizard Nebula by Jon Talbot using the SVQ100


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