The Celestron AstroMaster-90 is a very good telescope for beginners. It is ideal for both terrestrial and celestial applications. The AstroMaster-90 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 a rugged pre-assembled tripod, a 20mm eyepiece and a permanent mounted Starpointer finder scope to easily locate heavenly objects.
| Optical Design | Achromatic refractor |
| Optical Lens Diameter | 3.5" (90mm) |
| Focal Length | 1000mm |
| Focal Ratio | f/11.1 |
| Maximum Useful Magnification | 177x |
| Resolving Power | Not Specified by Manufacturer |
| Optical Tube Dimensions | Not Specified by Manufacturer |
| Mount Type | Equatorial |
| Eyepiece Barrel Diameter | 1.25" |
| Finderscope | Mounted StarPointer |
| Tripod | 1.25" steel tube legs |
| Motor | No |
| GO-TO Capability | No |
| PC Compatible | No |
| Power Source | None |
| Weight | 23.0 lbs (10.43kg) |
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Comments about Celestron AstroMaster-90 EQ 90mm 3.5"/90mm Refractor Telescope Kit:
not for beginers. no clear Construction
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