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Use the Sky-Watcher Evostar ED APO 72mm f/5.8 Guidescope
to improve the precision of your autoguiding system, for wide-field
astrophotography with small CCD imagers, or as an exceptional
grab-and-go option for fast observation sessions.
72mm aperture is complemented by an extra low-dispersion (ED) element
set in a doublet apochromatic lens design. These two optical features
make the Evostar much more precise than standard refractors and
guidecopes, producing crisp and clear high-resolution views with limited
edge distortion and accurate color representation. To achieve the
sharpest focus possible, Sky-Watcher utilizes a Crayford-style focuser.
Unlike a conventional rack-and-pinion system, the focuser utilizes a
toothless friction mechanism that smoothly moves the drawtube without
the backlash that rack-and-pinion focusers suffer from. The focuser has a
large 2" drawtube to accommodate full-frame imaging sensors without
vignetting, and comes with a 1.25" reducer adapter for smaller imaging
and guiding systems.
A mounting cradle-ring assembly clamps over
the OTA and lets the user adjust the orientation and position of the
scope relative to the mount to optimize viewing comfort and to help with
balancing, while avoiding interference with other equipment. The scope
is offered without a mount or tripod, but a Vixen-style dovetail plate
makes it compatible with any mount head with a Vixen-style saddle.
Protecting the optical tube and accessories during transport and
storage, a hard aluminum carrying case is provided.