Sporting a distinctive large aperture and deep light bucket, the Explore Scientific FirstLight 254mm f/5 Dobsonian Telescope gives users a simple yet highly effective platform. The fast f/5 focal ratio, hexagonal rack-and-pinion focuser, and the ability to detach the OTA from the rockerbox and mount it on an equatorial mount make the FirstLight a good choice for imaging. A Vixen-style dovetail plate is included for use with an EQ mount. The 2.5" focuser allows the use of both 1.25" and larger 2" eyepieces and accessories.
The heavy base provides a rock-steady platform with very low vibrations, and can be disassembled into flat sections within minutes for easy transport. Dual mounting rings allow the OTA to be precisely balanced for smooth movement. The telescope comes with a red dot finder, a red-beam flashlight with lanyard, a Tirion Double-Sided Multi-Latitude Planisphere, and a double-sided moon crater map.
- 254mm (10") aperture
- f/5 focal ratio
- 1270mm focal length
- Optical Design: Dobsonian-variant of a Newtonian reflector
- Alt-az rocker design
- Large aluminum altitude wheels allow for smooth movement and tracking with reduced vibration
- Teflon pads on ground plate enable smooth 360° rotation
- Adjustable mounting rings enable precision balancing when using lighter or heavier accessories for smoother motion
- Mounting rings allow the altitude wheels to be removed and replaced with included Vixen-style dovetail for attachment to an EQ, alt-az, or GoTo mount head for tripod/pier use
- Large hexagonal 2.5" helical rack-and-pinion design
- Provides strength and rigidity to handle heavy eyepieces and imaging rigs with little backlash, tilt, or shifting
- Includes 2" and 1.25" eyepiece adapters to allow use of a variety of eyepieces and accessories
- 25mm SPL eyepiece
- Red-dot finder
- Astro R-Lite Red Flashlight with lanyard
- Tirion double-sided multi-latitude planisphere
- Double-sided moon crater map