Celestron C90 is a slim spotting telescope in the Maksutov system with a diameter of 90 mm, appreciated as a portable astronomical telescope, nature telescope and telephoto lens. Often chosen by aircraft observers at cruise altitudes. • optical system: Maksutow-Cassegrain
• Diameter: 90 mm
• focal length: 1250 mm
• lighted: 1/14
• finder: 8x21
• eyepiece: 32 mm (1.25 "/ 39x magnification)
• Angular field of view for the eyepiece in the set: 1.3 °
• linear field of view for the eyepiece in the set: 23 m @ 1000 m
• distance between the eyepiece and the eye: 20 mm
• the smallest focusing distance: 4.57 m
• coatings: Multi-Coated
• tripod mount: yes
• camera mount: optional T-Adapter
• tube length: 406.4 mm
• nylon case included
• weight: 2.27 kg • eyepiece: 32 mm / 1.25 "
• Optical finder 8x21
• 45 ° angle cap
• nylon cover
|
