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Welcome to a new world of adventure!
The
iOptron
®
Photron Ritchey-Chrétien design telescopes
feature low thermal expansion quartz primary and
secondary mirrors with ninety-nine percent reflective
dietetic coatings. The RC optical design delivers
coma, spherical and chromatic aberration free results,
perfect for color or monochrome imaging. A fixed
position primary mirror eliminates image shift that
occurs from focusing with other telescope designs.
The
telescope
comes
with
a
dual-speed
linear-bearing Crayford focuser. Three focuser
extension rings are provided for a “flex-free” solid
extension as a means to take up any unneeded back
focus. Its steel tube is equipped with 10 knife edge
baffles to diminish contrast reducing stray light,
improving the instrument in both visual and imaging
uses.
These instructions will help you set up and properly
use and care for your telescope. Please read them
over thoroughly before getting started.
Parts List
1 Optical tube assembly with dual-speed focuser
1 2” to 1.25” Compression ring adapter (installed)
1 2” extension ring
2 1” extension rings
1 Battery holder (RC10 only)
Getting Started
Your telescope comes fully assembled from the
factory. The optics have been installed and
collimated, so you should not have to make any
adjustments to them. Keep the dust covers on the
telescope when it is not in use.
Mounting the Telescope
The iOptron RC has a preinstalled dovetail rail for
mounting the scope quickly and directly onto an
altazimuth or equatorial mount. The RC6 has a
Vixen-style dovetail bar, while RC8 or RC10 has a
Losmandy-style one.
Selecting an Eyepiece
All RC scopes can accept 2” or 1.25” eyepieces, via a
2” to 1.25” adapter.
Always begin viewing with the lowest power eyepiece.
(Note: a 20 mm focal length eyepiece is lower power
than a 10 mm one.) A formula can be used to
determine the power of each eyepiece: Telescope
focal length divided by eyepiece focal length equals
magnification. For example, a RC8 has 1600mm in
focal length, the magnification with a 20mm lens is:
1600mm ÷ 20mm = 80X
Focusing Telescope
All iOptron RC telescopes come with a dual-speed
Crayford focuser. Each focuser is also equipped with
both a tension adjustment knob for the drawtube and
a drawtube locking knob. We recommend keeping
the tension adjustment knob fairly tight at all times as
this will minimize drawtube flexure and slippage.
The 6" RC features a 2" Crayford focuser equipped
with a removable 1.25" adapter. The tension
adjustment knob and the drawtube locking knob are
on the underside of the focuser,
2” drawtube
2” to 1.25” adapter
