Sky-Watcher
Sky-Watcher Flextube 300P f/4.9 Dobsonian Telescope
Best price $1895 · 305mm aperture · $/mm 6.21
$1895 on Amazon ↗At $6.21 per mm of aperture, this is dearer per millimetre than the typical dobsonian at $4.24/mm — you're paying for something other than raw aperture.
Specs
| Aperture | 305 mm |
|---|---|
| Focal length | 1500 mm |
| Focal ratio | f/4.9 |
| Type | Dobsonian |
| Mount | Dobsonian |
| Resolving power | 0.38″ (Dawes limit) |
| Limiting magnitude | 14.9 |
| Max useful magnification | 610x |
| Light gathering | 1898x the naked eye |
| Optical design | Dobsonian |
| Glass type | Borosilicate |
| Highest magnification | 610x |
| Dawes limit | 0.08 arcseconds |
| Tube length | 1397mm |
| Tube weight | 84.5 lbs |
| Eyepiece fitting | 2" Nosepiece |
| 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.
Compare
Explore Scientific 12" F/5 Dobsonian (Truss Tube)
Celestron Starsense Explorer 10" Dobsonian Smartphone Telescope
Sky-Watcher Flextube 250P f/4.7 Dobsonian Telescope
Closest alternatives by price in the same class. Head-to-head pages exist where people actually search for the comparison.