The SVQ100 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 the Feather Touch 3” dual speed, rack and pinion focuser exclusively on this model. The telescope now comes with a threaded camera adapters for both the 42 mm and 48 mm over-sized t-rings. We also have a number of larger adapters available for direct, wide aperture attachment to your full frame camera.
The SVQ is optimized for imaging. 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 3” Feather Touch 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 in continuous production and are shipped on a first come, first served basis. The sooner you order, the sooner you will receive yours. The SVQ100 is shipped in our C17 heavy duty case.
OBJECTIVE: 100 mm clear aperture, 580 mm focal length (f-5.80), air spaced four element apochromat using an Ohara FPL53 second element. Optimized for full frame imaging.
TUBE ASSEMBLY: Lightweight, fully baffled,aluminum tube and dewshield. Painted ultra flat black inside. 4.5” diameter main tube.
DIMENSIONS: OTA: 19.1/4” long with dewshield retracted and 23 3/4” long with dewshield extended (focuser racked in).
WEIGHT: OTA: Only 10.8 pounds. Rings add 12 ounces each.
DEWSHIELD: Textured Instrument White aluminum retracting dewshield with cap. Dew shield front ring diameter is 5 1/2” in diameter.
FOCUSER: Customized 3” Feather Touch focuser with all the features. Drawtube is modified and has 2” of travel. Focuser comes with a threaded extension tube, 48 mm and 42 mm t ring adapters. Optional larger aperture photographic adapters and a low profile visual adapter also available.
RINGS: Aluminum hinged rings with the standard 1/4-20 thread Stellarvue hole pattern top and bottom. Holes are spaced 1.5” and 60 mm apart respectively, with one in the center.
CASE: Comes with C17 heavy duty travel case
FIELD OF VIEW: Full Frame Camera (Canon 5D, Sbig 11K, etc): 3.56 degrees by 2.37 degrees. APS sized chip: (Apogee 8300, QSI 583 & 683): 1.92” X 1.34 degrees.
RESOLUTION: Full Frame chip - 2.28”/Pixel. APS Chip - 1.92”/Pixel
BACKFOCUS: 135 mm focuser racked all the way in. Focuser’s attachment thread is a female M75 X 1 thread. Two 40 mm extension tubes are provided which thread into the focuser reducing the backfocus as needed. This provides the user with backfocus that is between 85 mm and 135 mm without extension, 45 - 95 mm with one extension and 5 mm - 55 mm with two extensions. Remember, adapters will take up some of this space.
FIELD FLATTENER: Not required. Telescope has been tested with small medium and full frame cameras and provides a wide, unvignetted, flat field.
LIGHT GAIN: 204x (human eye = 1)
BELOW: Wizard Nebula by Jon Talbot using the SVQ100