Newton-lens photocorrector with a closed tube
Parameters and prices:
Sample:
Optical system is designed to pass the light through a corrector first and then is reflected from a primary mirror. The biggest advantage of this system is closed tube, corrected star images at the edge of the photo field.
This photo astrograph is built for digital cameras (Canon, Nikon), CCD and the design field diameter is 28 mm .
This visual system minimalize sphere aberation, coma, astigmatism and flat field.
The star size at the field edge is comparable to the star size at the axis.
Diameter:
135 mm
175 mm
220 mm
Speed and focus:
4,2 / 550
4,2 / 750
4,5 / 1000
Price (Euro):
850
1 300
1 820