Parts List, Dvd | Orion #8297 8 F/3.9, #8296 10 F/3.9 specification

	2"
Finder scope	Accessory
bracket	collar

9x50 Finder

Scope

			Optical
			Optical
			tube
		Tube rings	tube
		Tube rings
	Focus
	wheel
		Fine focus wheel
Drawtube		Fine focus wheel
tensioning
thumbscrew

Focus wheel

Figure 1. The Orion 8" f/3.9 Newtonian Astrograph

Congratulations on your purchase of an Orion f/3.9 Newtonian Astrograph! These powerful imaging telescopes feature “fast,” high-quality parabolic optics, a 2" dual-speed Crayford focuser, and excellent mechanical construction with some special features. Optimized for astrophotography with DSLR and astronomical CCD imaging cameras, our f/3.9 Newtonian Astrographs are capable of delivering breathtak- ing imaging performance – for beginning to advanced astrophotographers.

This instruction manual covers both the 8" and 10" mod- els of f/3.9 Newtonian astrograph. Although they differ in aperture and focal length, physical size, and weight, they are otherwise very similar in mechanical construc- tion and features. So we will use the 8" model to illus- trate the features of both astrographs. Any exceptions related to the 10" model will be noted.

This instruction manual will help you to set up and properly use your telescope. Please read it through completely before attempting to use the scope and its included accessories.

WARNING: Never look directly at the Sun through your telescope or its finder scope – even for an instant – with out a professionally made solar filter that completely cov ers the front of the instrument, or permanent eye damage could result. Young children should use this telescope only with adult supervision.

Parts List

•Optical tube assembly

•Optical tube dust cap

•1.25" eyepiece holder

•9x50 finder scope with bracket

•Pair of hinged tube rings

•2" thread-on extension adapter, 30mm

•2" slip-on extrension adapter, 36mm

•Quick collimation cap

•Cooling accelerator fan and battery holder (batteries not included)

•Starry Night Special Edition CD-ROM and StarTheater

DVD

We recommend keeping all of the original packaging. In the unlikely event you should need to ship the telescope back to Orion for warranty repair service, you should use the original

#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.