D60F700 refractive objective lens with a diameter of 60mm, perfect for DIY astronomical telescopes.
Features a 700mm focal length and all-sided blue film coating for enhanced image clarity and contrast.
devised with two refraction double separation objective sets, ideal for both telescope objectives and star finders.
Precision engineering with a diameter tolerance of +0/-0.12mm and a center thickness tolerance of ±0.2mm for accurate performance.
Achieves combined image ratings of 1/4-1/8, ensuring exceptional viewing experiences for astronomy enthusiasts.
وصف
Refractive astronomical telescope objective lens D=60mm
b Diameter: 62mm
The focal length F: 700 mm
Coating: All-sided blue film
Combined image :1/4-1/8
Diameter tolerance :+0/ -0.12mm
Center thickness tolerance :±0.2mm
Focal length tolerance :±0.1%
Finish :60/40
Eccentric :1'
Note: two refraction double separation objective sets; Used for astronomical telescope objective and star finder.