Celestron
Celestron StarSense Explorer DX 130AZ Smartphone Telescope
Best price $499 · 130mm aperture · $/mm 3.85
$499 on Amazon ↗At $3.85 per mm of aperture, this is priced about in line with other reflector telescopes, which average $4.31/mm.
Specs
| Aperture | 130 mm |
|---|---|
| Focal length | 650 mm |
| Focal ratio | f/5.0 |
| Type | Reflector |
| Mount | Alt-Az |
| Resolving power | 0.89″ (Dawes limit) |
| Limiting magnitude | 13.1 |
| Max useful magnification | 260x |
| Light gathering | 344x the naked eye |
| Optical design | Newtonian |
| Highest magnification | 260x |
| Dawes limit | 0.89 arcseconds |
| Tube length | 635mm |
| Tube weight | 8.8 lbs |
| Best for | Beginner, Visual |
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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