Celestron Spotting Scope – C90 MAK

Description

Celestron Spotting Scope – C90 MAK

Overview

The Celestron Spotting Scope – C90 MAK‘s optical design is recognized for being a portable design that is easy to use and has a variety of applications, making it an excellent choice for both terrestrial and astronomical usage. This C90 Mak has excellent optics with razor sharp images over a wide field.

Features

• Multi Coated Optics
• Maksutov-Cassegrain Optical Design
• Compact and Portable Design
• Erect Image System for Terrestrial and Astronomical Use
• Built-in T-Adapter threads for Ease of Adapting SLR Cameras
• Comes with 32 mm Eyepiece, 45° Erect Image Diagonal and 8×21 Erect Image Finderscope
• Backpack Made of Nylon

Specifications

• Optical Design:  Maksutov-Cassegrain
• Aperture:  90 mm (3.54 in)
• Focal Length:  1250 mm (49 in)
• Focal Ratio:  14
• Angle:  0 or 45 °
• Eyepiece 1:  32 mm (1.26 in)
• Magnification 1:  39 x
• Finderscope:  8×21
• Highest Useful Magnification:  213 x
• Lowest Useful Magnification:  13 x
• Limiting Stellar Magnitude:  12.3
• Resolution (Rayleigh):  1.55 arc seconds
• Resolution (Dawes):  1.29 arc seconds
• Light Gathering Power:  165 x
• Angular Field of View:  1.3 °
• Linear Field of View (@1000 yds):  68 ft (21 m)
• Linear Field of View (@1000 m):  23 m (75 ft)
• Eye Relief:  20 mm (0.79 in)
• Near Focus (Binoculars):  15 ft (4.57 m)
• Optical Coatings:  Multi-Coated
• Optical Tube Length:  16 in (406 mm)
• Weight (lbs):  5 lbs (2.27 kg)
• Camera Adaptable:  Optional T-Adapter
• Tripod Adaptable