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The Vixen VMC200L Telescope OTA with Sphinx SX2 Equatorial Mount and Star Book One is well suited to deep sky observing and imaging. This 8.0"/200mm f/9.75 catadioptric telescope features a sophisticated configuration that employs incorporates a primary mirror and a meniscus corrector just before the secondary mirror. The resulting optical path is corrected twice - this eliminates spherical aberration and field curvature while delivering sharper images without false-color. Because the optical correction is placed before the second mirror, there's no need for a corrector plate and the dewing problems associated with it. Another benefit is the elimination of spherical aberrations.
Focusing the VMC200L yields a stable and easy to adjust image. The rack-and-pinion focusing system is placed behind the primary mirror to eliminate image-shift. The focuser accepts 2.0" eyepieces and accessories.
This package includes the VMC200L telescope, Vixen's SLV 9mm and 20mm eyepieces,a 7x50 finderscope with a flip mirror diagonal that accepts 1.25" eyepieces, the Sphinx SX2 mount with the Star Book One, and the SXG-HAL130 aluminum tripod.
Motorized equatorial mount with hand controller
27 lb payload capacity, excluding counterweights
Precise azimuth adjustment indicators
Integrated counterweight shaft retracts into mount when not in use
Includes one 4.2 lb counterweight
Vixen-style dovetail saddle
Gears and Motors
Two stepping (pulse) motors at 250 pulses per second
180-tooth full circle micro-movement wheel gear
40mm aluminum-alloy die-cast Right Ascension axis
35mm aluminum-alloy Declination axis
±7° azimuth adjustment, twin tangent screws/knobs with about 1.2°/rotation
0-70° altitude adjustment, 3-altitude zone settings, 2° increment altitude scale, twin T-bar handles with 0.8°/rotation
Star Book One
Powered by mount through connector port
LED display screen backlight
Red backlit keypad
Independent screen and keypad dimming control
ST-4 compatible integrated autoguider port
Sidereal tracking with different tracking speeds: celestial, solar, lunar, and King's rate
Variable manual slewing speeds from 0.1x to 999x
Periodic error correction (PEC) removes inaccuracies inherent in gears and allows for more accurate tracking, especially for long-exposure astrophotography
Adjustable screen brightness
Selectable tracking for Northern and Southern hemisphere
Primary mirror: f=500 mm, f/2.5
Secondary mirror: d=72 mm, magnification 3.9x
Distance primary secondary:: ≈330 mm
Central obstruction 80mm diameter, 40% of d
8.0"/200 mm, f=1950 mm, f/9.75 catadioptric system
Open tube design eliminates dewing, speeds up cool-down
Optical path is corrected twice to eliminate spherical aberration and curvature of field
Rack-and-pinion focusing system is placed behind the primary mirror to eliminate image-shift
NLV 25 mm Eyepiece
Twist-up eye cup
Eye relief: 20 mm
High-grade lanthanum glass ensures high resolution and contrast
SXG-HAL130 Aluminum Tripod
A solid platform designed for the Sphinx mounts. The tripod height varies from 28.7" to 45.3" and it weighs in at 12.1 lb (5.5 kg).
In the Box
Vixen Optics VMC200L Telescope OTA with Sphinx SX2 Equatorial Mount and Star Book One