E70 MM VIEWING TUBE

E70 MM VIEWING TUBE is designed for the observation of infinitely distant objects and starry sky. The device can be placed on the tripod with 1/4 screw.

Technical Specifications:

Entrance pupil diameter, mm - 70
Focal Length, mm - 500
Relative aperture - 1 : 7.2
Effective relative aperture - 1 : 8.7
Magnification with the ocular F=25 mm, � - 2.5
Field of view, degrees - 2.5
Focusing range, m - 5 � infinity
Resolution, sec - 1.9
Image with 450 prism diagonal - strait
Image with 900 mirror diagonal - mirror
Overall dimensions, mm - 87 x 185
Weight, kg - 0.9