TS Optics 0.73× 2-inch Coma Corrector This Ackermann-designed corrector reduces Newtonian focal length while correcting coma. At f/4, the nominal resulting focal ratio is f/2.92. It needs adequate focus clearance and careful alignment for sharp corner stars.
Manufacturer model: TS2KORRR · Specifications checked against manufacturer data on 2026-11-04
This Ackermann-designed corrector reduces Newtonian focal length while correcting coma. At f/4, the nominal resulting focal ratio is f/2.92. It needs adequate focus clearance and careful alignment for sharp corner stars.
Compatibility and setup
Spacing to the sensor and the telescope's available focus distance are separate measurements. Suitable focus travel is essential.
Technical specifications
model
TS2KORRR
reduction
0.73×
elements
3
coatings
Fully multi-coated
telescope connection
2-inch barrel
camera connection
M48×0.75
sensor spacing
66.85 mm from camera-side M48 thread
telescope focus requirement
85 mm above focuser's 2-inch socket
body length
56 mm
telescope filter thread
M48×0.75
focal ratio range
f/4–f/6
image field
22 mm fully corrected; usable to 30 mm
Compatibility notes
Spacing to the sensor and the telescope's available focus distance are separate measurements. Suitable focus travel is essential.
Additional specifications
Elements
3
Sensor spacing
66.85 mm from camera-side M48 thread
Telescope focus requirement
85 mm above focuser's 2-inch socket
Body length
56 mm
Telescope filter thread
M48×0.75
Image field
22 mm fully corrected; usable to 30 mm
68943
Data sheet
Camera connection
M48×0.75
Coatings
Fully multi-coated
Focal ratio range
f/4–f/6
Model
TS2KORRR
Reduction
0.73×
Telescope connection
2-inch barrel
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TS Optics 0.73× 2-inch Coma Corrector This Ackermann-designed corrector reduces Newtonian focal length while correcting coma. At f/4, the nominal resulting focal ratio is f/2.92. It needs adequate focus clearance and careful alignment for sharp corner stars.
Manufacturer model: TS2KORRR · Specifications checked against manufacturer data on 2026-11-04
