Ideal for visual observation as well as prime focus, eyepiece projection, and afocal imaging astrophotography techniques, the Vixen Optics SD103S 103mm f/8 ED APO Refractor Telescope
marks the middle size in the series, boosting its light-gathering
ability up from the smaller model, without the weight and size of the
larger one—making this an ideal addition to an amateur astronomer or
photographer who wants to view and photograph the moon, planets, and
deep sky objects.
Optically, Vixen outfitted the SD103S with FPL53
extra-low dispersion (ED) glass, in a fully multi-coated apochromatic
lens system that corrects for both spherical and chromatic aberrations,
astigmatism, and off-axis comas. This correction creates a wide flat
field of view without distortion and removes the blue-tinted halo effect
for true high-contrast color transmission. It can accept both 2" and
1.25" eyepieces and accessories for visual use, and threads on the
drawtube allow direct connection of T-rings and other camera mounts.
Included
with the the optical tube assembly (OTA) is a flip-mirror diagonal with
dual 1.25" holders. The light path can be directed to the upper holder
with the mirror in the Up position, and to the rear holder by flipping
it down. For visual observation, the mirror can hold two eyepieces to
allow easy changes from low to high magnification. When using it for
imaging, the camera or imaging system is placed in the back, and an
eyepiece can be attached at the top to check alignment and tracking
between exposures.
Vixen offers the OTA without a mount and tripod
for users who already have a reliable support system, but include a
mounting ring assembly and a Vixen-style dovetail plate to make it
compatible with a wide variety of mounts. An integrated carry handle
makes set up and break down easier and safer.
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