Explore Scientific
Explore Scientific Firstlight AR90mm White Tube Refractor W/ AZ Mount
Best price $159 · 90mm aperture · $/mm 1.78
Buy on Amazon ↗At $1.78 per mm of aperture, this is better value than most refractor telescopes we track, which sit around $2.94/mm.
Specs
| Aperture | 90 mm |
|---|---|
| Focal length | 500 mm |
| Focal ratio | f/5.5 |
| Type | Refractor |
| Resolving power | 1.29″ (Dawes limit) |
| Limiting magnitude | 12.3 |
| Max useful magnification | 180x |
| Light gathering | 165x the naked eye |
| Optical design | Doublet Refractor |
| 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.
Prices
| Retailer | Price | |
|---|---|---|
| OPT | $159 |
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