One-Year Limited Warranty, Specifications

4. Specifications

Orion 8" f/3.9 Newtonian Astrograph		Orion 10" f/3.9 Newtonian Astrograph
Optical configuration:	Newtonian reflector	Optical configuration:	Newtonian reflector
Aperture:	203mm	Aperture:	254mm
Focal length:	800mm	Focal length:	1000mm
Focal ratio:	f/3.9	Focal ratio:	f/3.9
Primary mirror:	Low thermal expansion optical glass,	Primary mirror:	Low thermal expansion optical glass,
	parabolic figure		parabolic figure
Mirror coatings:	Enhanced aluminum (94%	Mirror coatings:	Enhanced aluminum (94%
	reflectivity) with SiO2 overcoat		reflectivity) with SiO2 overcoat
Secondary mirror		Secondary
minor axis:	70mm	mirror minor axis:	82mm
Focuser:	Dual-speed (11:1) 2" Crayford,	Focuser:	Dual-speed (11:1) 2" Crayford,
	accepts 2" accessories		accepts 2" accessories
Drawtube travel:	38mm	Drawtube travel:	38mm
Optical tube:	Rolled steel, gloss enamel exterior	Optical tube:	Rolled steel, gloss enamel exterior
	finish		finish
Tube baffles:	9	Tube baffles:	13
Weight:	17.5 lbs. – without tube rings, fan,	Weight:	25.5 lbs. – without tube rings, fan,
	finder scope, 1.25" eyepiece holder		finder scope, 1.25" eyepiece holder
	21.6 lbs. – with tube rings, finder		30.2 lbs. – with tube rings, finder
	scope, 1.25" eyepiece holder		scope, 1.25" eyepiece holder
Length:	30.25"	Length:	38.6"
Tube rings:	Included, hinged, felt-lined	Tube rings:	Included, hinged, felt-lined
Finder Scope:	9x50, with spring-loaded X-Y	Finder Scope:	9x50, with spring-loaded X-Y
	dovetail bracket		dovetail bracket
2" Extension adapters: 30mm and 36mm extension length		2" Extension adapters: 30mm and 36mm extension length

One-Year Limited Warranty

The Orion 8" and 10" f/3.9 Newtonian Astrographs are warranted against defects in materials or workmanship for a period of one year from the date of purchase. This warranty is for the benefit of the original retail purchaser only. During this warranty period Orion Telescopes & Binoculars will repair or replace, at Orion’s option, any warranted instrument that proves to be defective, provided it is returned postage paid to: Orion Warranty Repair, 89 Hangar Way, Watsonville, CA 95076. Proof of purchase (such as a copy of the original receipt) is required.

This warranty does not apply if, in Orion’s judgment, the instrument has been abused, mishandled, or modified, nor does it apply to normal wear and tear. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state. For further warranty service information, contact: Orion Customer Service (800) 676-1343; support@telescope.com.

Orion Telescopes & Binoculars

OrionTelescopes.com

89 Hangar Way, Watsonville CA 95076

Customer Support Help Line (800) 676-1343

#8296 10" F/3.9, #8297 8" F/3.9 specifications

The Orion #8297 8" F/3.9 and #8296 10" F/3.9 reflect the latest innovations in astronomical technology, designed to meet the needs of both amateur and professional astronomers. These telescopes are renowned for their impressive optics, portability, and user-friendly features, making them ideal for deep sky observation and astrophotography.

The Orion #8297 8" F/3.9 features an 8-inch aperture, which allows for a remarkable light-gathering capacity, making it suitable for observing faint celestial objects. With a fast focal ratio of F/3.9, this telescope enables astronomers to capture stunning images of galaxies, nebulae, and star clusters with minimal exposure times. The telescope’s well-constructed primary mirror is made from high-quality glass, ensuring sharp and detailed views of the night sky. Additionally, the dual-speed 2” Crayford-style focuser enhances focusing precision, allowing users to achieve fine adjustments with ease.

On the other hand, the Orion #8296 10" F/3.9 elevates the observational experience with a larger 10-inch aperture. This increased size further enhances light-gathering ability, resulting in even clearer images of distant objects. Like its 8-inch counterpart, the F/3.9 focal ratio makes this telescope particularly advantageous for astrophotography, enabling users to shoot spectacular deep-sky images efficiently. The telescope is constructed with a sturdy, fully adjustable mount that ensures stability while tracking celestial objects, even during high-magnification viewing.

Both models come equipped with adjustable finderscopes, which assist in locating objects in the vast night sky, and they include a set of high-quality eyepieces that provide a range of magnifications to suit different observation needs. Furthermore, the lightweight design of both telescopes allows for easy transport to various observing sites, making them versatile tools for astrophotography enthusiasts and casual observers alike.

In summary, the Orion #8297 8" F/3.9 and #8296 10" F/3.9 are excellent telescopes that combine advanced optics with user-centric design. Their strong performance, portability, and innovative features make them perfect choices for anyone looking to explore the wonders of the universe, from novices to seasoned astronomers.