Sharpstar 2" 0.95x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 Thread
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This 2" coma corrector/focal reducer works with many Newtonian reflectors to correct for coma and ensure sharp images across a 44mm image circle. The correction is especially optimzed across the inner 28mm image circle to suit cameras with APS-C or smaller sensors. It's ideal for Newtonians with an aperture of 150mm to 600mm and native focal ratio of f/3 to f/6. This corrector also provides a small degree of focal reduction of 0.95x which takes an f/4 reflector to f/3.8 and an f/5 reflector to f/4.75, slightly reducing the required exposure time and improving the peripheral star image quality.
Specifications：
- Model: For 150mm-600mm diameter Newtonian paraboloid reflectors
- Focal ratio：For Newtonians of focal ratio f/3-f/6
- Magnification: 0.95x
- Thread specification on camera end: M48x0.75 Male
- Image Circle: 44mm, the optimal image in central 28 mm
- Number of lenses: Triplet
- Outer barrel diameter: 2"
- Back focus: 56mm
- Overall Length: 79.7mm
- Optical Coatings: Fully multi-coated
- Weight: 0.22kg
Other Information
- Country of Manufacture: China
This 2" coma corrector/focal reducer works with many Newtonian reflectors to correct for coma and ensure sharp images across a 44mm image circle. The correction is especially optimzed across the inner 28mm image circle to suit cameras with APS-C or smaller sensors. It's ideal for Newtonians with an aperture of 150mm to 600mm and native focal ratio of f/3 to f/6. This corrector also provides a small degree of focal reduction of 0.95x which takes an f/4 reflector to f/3.8 and an f/5 reflector to f/4.75, slightly reducing the required exposure time and improving the peripheral star image quality.
Specifications：
- Model: For 150mm-600mm diameter Newtonian paraboloid reflectors
- Focal ratio：For Newtonians of focal ratio f/3-f/6
- Magnification: 0.95x
- Thread specification on camera end: M48x0.75 Male
- Image Circle: 44mm, the optimal image in central 28 mm
- Number of lenses: Triplet
- Outer barrel diameter: 2"
- Back focus: 56mm
- Overall Length: 79.7mm
- Optical Coatings: Fully multi-coated
- Weight: 0.22kg
This 2" coma corrector/focal reducer works with many Newtonian reflectors to correct for coma and ensure sharp images across a 44mm image circle. The correction is especially optimzed across the inner 28mm image circle to suit cameras with APS-C or smaller sensors. It's ideal for Newtonians with an aperture of 150mm to 600mm and native focal ratio of f/3 to f/6. This corrector also provides a small degree of focal reduction of 0.95x which takes an f/4 reflector to f/3.8 and an f/5 reflector to f/4.75, slightly reducing the required exposure time and improving the peripheral star image quality.
Specifications：
- Model: For 150mm-600mm diameter Newtonian paraboloid reflectors
- Focal ratio：For Newtonians of focal ratio f/3-f/6
- Magnification: 0.95x
- Thread specification on camera end: M48x0.75 Male
- Image Circle: 44mm, the optimal image in central 28 mm
- Number of lenses: Triplet
- Outer barrel diameter: 2"
- Back focus: 56mm
- Overall Length: 79.7mm
- Optical Coatings: Fully multi-coated
- Weight: 0.22kg
Other Information
- Country of Manufacture: China
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Sharpstar 2" 0.95x Reducer / Coma Corrector for f/3-f/6 Newtonian Reflectors with M48 Thread