The Airy-Disk 106mm APO combines a slightly larger than 4-inch aperture with a compact design, making it well suited for both visual observation and astrophotography.
The high-quality triplet objective uses Japanese Hoya FCD100 ED glass for excellent color correction, high contrast and sharp images.
For astrophotography, a matched 0.75x three-element reducer is available for corrected full-frame imaging. It reduces the focal length from 700mm to 525mm at f/5 and, together with the triplet objective, creates a six-element imaging system.
An optional aluminum case provides additional room for accessories.
SKU
Glass used
Aperture
Focal ratio
Focal length
Coating
Resolving Power
Limit mag.
Color
Tube Material
Dovetail style
Focuser
Available FF
Reduce to
Backfocus
CAA
For sensor
Eyepiece Clamp
Length ext
Length hood in
OTA+PARTS
OTA
OTA DIA
Dustcover
Ring weight
Total mounting HW
Box size(cm)
Box weight
Alu Suitcase
Alu carton size
Weight incl Suitcase
Focuser thread front
Focuser thread rear
Rear thread depth
Rear hole depth
106APO
HOYA FCD100, CDGM
106mm
f/6.6
700mm
full wideband multi coating
1.09"
11.9mag
White
Aluminum alloy
Vixen
3" dual-speed 1:10 rack-and-pinion, now with 3 linear rails(Mid 2024)
0.75x FF, 0.92x FF
525mm f/5, 644mm f/6
adjustable
optional
Full Frame
2" with 1.25" Adapter
645mm
550mm
5.9kg
5.19kg
114cm
SCREW
0.45kg
0.72kg
67.5x34.5x25.5
8.51kg
optional
79x33x45.5
13.39kg
M110x1
M80x1
5.5mm
8mm