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User Manual for Explore Scientific FirstLight 254mm f 5 Alt-Az Dobsonian Telescope Click to enlarge the picture
Contents of the user manual for the Explore Scientific FirstLight 254mm f 5
- Product category: Reflectors Explore Scientific
- Brand: Explore Scientific
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for Explore Scientific Reflectors
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User manual for the Explore Scientific FirstLight 254mm f 5 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Explore Scientific product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Explore Scientific user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Explore Scientific product will considerably shorten its lifespan!
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Product description Sporting a distinctive large aperture and deep light bucket, the Explore Scientific FirstLight 254mm f/5 Alt-Az Dobsonian Telescope gives users powerful performance at a reasonable price. Its large parabolic primary and smaller secondary mirrors are made from low-expansion glass to eliminate distortion across the entire field of view, especially at the edges, while allowing sharp resolution of star clusters and nebulae that smaller apertures cannot achieve.The fast f/5 focal ratio and hexagonal rack-and-pinion focuser make this an ideal choice for imaging, by enabling shorter exposure times with the ability to achieve tack-sharp focusing with the strength to handle large imaging rigs and eyepieces. This 2.5" focuser is designed to eliminate vignetting when using large wide-field eyepieces when observing, and when using large imaging sensors for astrophotography. Reducer adapters are included allowing the use of both 1.25" and larger 2" eyepieces and accessories.The heavy base provides a rock-steady platform with very low vibrations. This alt-az rocker mount features Teflon pads on the ground plate, and large altitude wheels for smooth and easy movement along both axes with little vibration. Dual mounting rings allow the OTA to be precisely balanced for even smoother movement, and the altitude wheels can be removed and replaced with a Losmandy-style dovetail plate so the OTA can be used with EQ and GoTo mounts mounted on large tripods or piers. - Optical Tube
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- 254mm (10") aperture
- f/5 focal ratio
- 1270mm focal length
- Optical design: Dobsonian-variant of a Newtonian reflector
- Low-expansion H-PZ33 glass primary mirror
- 74mm low thermal-expansion Borosilicate glass secondary mirror resists expansion to limit aberrations
- Mount
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- 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 a Losmandy-style dovetail for attachment to an EQ, alt-az, or GoTo mount head for tripod/pier use
- Focuser
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- Large 2.5" hexagonal rack-and-pinion design
- Provides strength and rigidity to handle heavy eyepieces and imaging rigs with little backlash, tilt, or shifting
- Large drawtube prevents vignetting with wide-field eyepieces during observation, or when using large imaging sensors for astrophotography
- Includes 2" and 1.25" eyepiece adapters to allow use of a variety of eyepieces and accessories
- Included Accessories
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Super Plössl eyepiece:- 1.25" diameter barrel
- 25mm yields 51x power
Finderscope:- Conventional 6x30
- Wide-field for fast subject acquisition and easy star hopping
UPC: 812257018284 In the Box Explore Scientific FirstLight 254mm f/5 Alt-Az Dobsonian Telescope 6x30 Finderscope 25mm Plossl Eyepiece 2" Eyepiece Reducer Adapter 1.25" Eyepiece Reducer Adapter Focuser Extension Shell Rockerbox Assembly 2 x Tube Clamps 2 x Altitude Wheels Limited 1-Year USA Warranty, Extendable to Transferrable Lifetime Warranty with Registration Table of Contents
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Technical parametersExplore Scientific FL-DOB1005-01 Specs | | | Optical Design | Dobsonian Reflector | | Aperture | 254 mm / 10" | | Focal Length | 1270 mm | | Focal Ratio | f/5 | | Focuser | Rack-and-Pinion | | Eyepiece Barrel Diameter | 1.25", 2" | | Diagonal | None | | Finderscope | Yes | | Mounting System | Losmandy Style | | Optical Tube Dimensions | 47.2 x 11.8" / 120 x 30 cm | | | | Batteries | None | | GPS | None | | Wi-Fi | None | | Weight | 28.7 lb / 13.0 kg (OTA)
61.5 lb / 27.9 kg (Fully Assembled) | | | | Package Weight | 82.0 lb | | Box Dimensions (LxWxH) | 58.0 x 20.4 x 19.8" |
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