Details
The Maksutov 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.
Additional Information
| Optical Design | Maksutov-Cassegrain |
|---|---|
| Aperture (mm) | 90 mm (3.54 in) |
| Focal Length (mm) | 1250 mm (49 in) |
| Focal Ratio | 14 |
| Angle | 0 or 45 ° |
| Eyepiece 1 (mm) | 32 mm (1.26 in) |
| Magnification 1 | 39 x |
| Finderscope | 8x21 |
| Carrying Case | Backpack made of nylon |
| 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 (deg) | 1.3 ° |
| Linear Field of View (@1000 yds) | 68 ft (21 m) |
| Linear Field of View (@1000 m) | 23 m (75 ft) |
| Eye Relief (mm) | 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 | Yes |
C90 MAK Manual (English, French, German, Italian, Spanish) 
