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7. Specifications
Optical Tube Assembly (OTA)
Primary mirror:
Focal length:
Focal ratio:
Primary mirror cell:
Secondary mirror:
Secondary mirror holder:
Mirror coatings:
Focuser:
Optical tube design:
Truss poles:
Navigation knob:
Optical tube material:
Tube outer diameter:
OTA weight, assembled:
OTA weight, disassembled: Lower tube section, 52.9 lbs.
OTA length, assembled:
OTA length, disassembled: Lower tube section, 21.75"
356mm (14.0") diameter
reflective surface, low thermal
expansion optical glass,
parabolic, center marked
1650mm
f/4.6
18-point flotation, 3 spring-
loaded collimation knobs
80mm minor axis, low thermal
expansion optical glass
4-vane spider assembly, 0.7mm
thick spider vanes, 3 SHCS for
tilt adjustment
Enhanced reflectivity (94%)
aluminum with SiO2 overcoat
Dual speed Crayford, 11:1
fine focus knob, accepts 2"
and 1.25" eyepieces, all metal
construction
Truss tube
8 total (4 truss pole assembles
with 2 poles each), 1.0" outer
diameter, aluminum black
anodized, captive assembly
hardware
Included
Rolled steel, 1.0mm thick
412mm (16.2")
69.25 lbs.
Upper tube section, 9.4 lbs.
Truss pole assemblies, 6.9 lbs.
61"
long; Upper tube section, 8.1"
long; Truss pole assemblies,
33.75" long
Mount
Dobsonian base:
Azimuth bearing material:
Altitude bearing material:
Altitude bearing diameter:
IntelliScope functionality:
Base weight:
Approximate base
dimensions:
Accessories
2" Eyepiece:
1.25" Eyepiece:
Eyepiece magnifications:
Finder scope:
Finder scope bracket:
Eyepiece rack:
Cooling accelerator fan:
Collapsible design,
CorrecTension altitude
tensioning, side brace supports,
carry handle
Virgin Teflon on Ebony Star
laminate
Ultra-high molecular weight
(UHMW) polyethylene on ABS
plastic
8.0"
Computerized Object Locator
system included, 14,000+
object database
45 lbs., assembled
29" diameter x 27" tall
35mm Deep View, 2", multi-
coated, threaded for Orion filters
10mm Sirius Plössl, 1.25",
multi-coated, threaded for Orion
filters
47.1x and 165x
9x power, 50mm aperture,
achromatic, crosshairs, 5° field
of view
Spring-loaded X-Y adjustment,
dovetail base
Holds three 1.25" eyepieces
and one 2" eyepiece
Included, runs off of 12V DC
33
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