Celestron
Celestron AstroMaster 70AZ
Best price $179 · 70mm aperture · $/mm 2.57
$179 on Amazon ↗At $2.57 per mm of aperture, this is priced about in line with other refractor telescopes, which average $2.94/mm.
Specs
| Aperture | 70 mm |
|---|---|
| Focal length | 900 mm |
| Focal ratio | f/12.9 |
| Type | Refractor |
| Mount | Alt-Az |
| Resolving power | 1.66″ (Dawes limit) |
| Limiting magnitude | 11.7 |
| Max useful magnification | 140x |
| Light gathering | 100x the naked eye |
| Weight | 5.3 kg |
| Best for | Entry refractor |
Resolving power, limiting magnitude, maximum useful magnification and light grasp are derived from the aperture — the standard formulas, not marketing claims.
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