Product Overview
Newtonian inherit an optical distortion called as
Coma, where stars at corner appears not round but bloated like a tadpole shape.
The Starfield Optics coma corrector will provide a flat field image when Use on
a Newtonian telescope that works from range of F/3-F/6. The large 2'' corrector
will provide widest field of illumination for even full frame DSLR without vignetting
The Starfield Optics 2'' Coma Corrector will significantly
enhance your visual experience as well, providing coma free view with sharp pin
point stars. 2"
nosepiece features recessed safety groove and is threaded to accept standard
2" filters
- 2" eyepiece barrel features brass
compression ring and dual large thumbscrews
- Magnification factor of 1.x
- Fully Multicoated
- 3-piece modular design (i) Optics in 2"
nosepiece with 48mm male filter thread (ii) 2' eyepiece barrel that
attaches to optical nosepiece, and (iii) M48 - T2 adapter ring
- Back-focus spacing requirement is approx. 70mm
+/- 5mm from the shoulder of the 2" nosepiece to the image plane
For visual use: connect
the 2" eyepiece barrel to the main optical nosepiece
For photo use: unscrew
the 2" eyepiece barrel and attach the included M48-T2 ring to the main
optical nosepiece Then attach your D/SLR camera to the male T2 thread via a
camera-specific T-ring (not included)
Specifications
- Fully Multi-Coated Optic
- 4 elements - 2 lens groups
- 50mm (2'') Barrel Fit
- 43.9mm Clear Aperture
- 4 Element In 2 Groups Design Corrector
- Magnification Factor 1.1x
- Design optimized for use at f/4.5 but will work well from f/3 - f/6
- Internal Edge Darkened
Weight:
- Lower barrel with lens elements: 7.4 oz
- Upper eyepiece holder: 4.1 oz
- Complete unit for visual use: 11.8 oz
- T thread adapter: 0.3 oz
- Complete unit for photo use: 7.7 oz
