Description
The Celestron AstroMaster-90 EQ-MD is a very good telescope for beginners. It is ideal for both terrestrial and celestial applications. The AstroMaster-90 EQ-MD offers multi-coated glass optics to allow clear and crisp images. This refractor model can also be used for astrophotography with an appropriate T-Mount adapter. It comes with the Celestron CG-3 mount to allow you to follow the movements of celestial objects, a motor drive, a diagonal, the star chart, a rugged pre-assembled tripod, a set of two eyepieces and a permanent mounted Starpointer finder scope to easily locate heavenly objects.
OVERVIEW
- Motor Drive for the automatic tracking
- Quick and easy no-tool setup
- Permanently mounted StarPointer
- Erect image optics – Ideal for terrestrial and astronomical use
- Quick release dovetail attachment – no tool setup
- German Equatorial mount with Setting circles – to accurately locate and track sky objects
- Rugged pre-assembled tripod with 1.25″ steel tube legs – Provides a rigid and stable platform
- All coated glass optics for clear, crisp images
- Deluxe accessory tray for convenient storage of accessories
ITEM # 21069
DESCRIPTION
If you’re looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster Series is for you. Each AstroMaster model is capable of giving correct views of land and sky.
The AstroMaster Series produce bright, clear images of the Moon and planets. It is easy to see the moons of Jupiter and the rings of Saturn with every one of these fine instruments. For views of the brighter deep space objects like galaxies and nebulae, we recommend the larger aperture and light gathering ability of the Newtonian reflectors.
This model includes the MOTOR DRIVE for automatic tracking.
SPECIFICATIONS
| Aperture (mm) | 90 mm (3.54 in) |
|---|---|
| Focal Length | 1000 mm (39 in) |
| Focal Ratio | 11 |
| Focal Length of Eyepiece 1 (mm) | 20 mm (0.79 in) |
| Magnification of Eyepiece 1 | 50 x |
| Focal Length of Eyepiece 2 (mm) | 10 mm (0.39 in) |
| Magnification of Eyepiece 2 | 100 x |
| Finderscope | Built-on StarPointer |
| Star Diagonal | Erect Image Diagonal – 1.25″ |
| Mount Type | CG-3 Equatorial |
| Tripod | 1.25″ steel tube legs |
| 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 (Compared to human eye) | 165 x |
| Apparent Field of View | 1 ° |
| Linear Field of View (@1000 yds) | 53 ft (16 m) |
| Optical Coatings | Multi Coated |
| Optical Tube Length | 36 in (914 mm) |
| Warranty | 2-year Telescope Warranty |
