D200F2000 coaxial Cassegrain parallel light tube

(1) The parallel optical tube adopts Cassegrain structure, the main mirror paraboloid, the secondary mirror hyperboloid, and the wave aberration of the center field system ≤λ/10(RMS, λ=0.6328).

(2) Effective diameter of parallel optical tube ≥200mm

(3) Focal length 2000±20mm

(4) Light parallelism ≤10 arcseconds (20±3℃)

(5) Environmental adaptability temperature range: -20℃-+50℃ optical axis parallelism accuracy does not exceed 20 arcseconds

(6) Parallel optical tube installation adopts dovetail quick connecting plate, convenient installation and disassembly

(7) The installation base plate of the light tube and the light source is also connected with the tripod or the head

(8) Optical tube dimensions: about φ250mmX350mm

(9) Parallel light tube body weight: weight ≤9kg (body does not include parallel light tube installation base plate, bracket, etc.)