Instruction/ maintenance manual of the product #8296 10" F/3.9 Orion
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INSTRUCTION MANUAL IN 406 Re v . A 07/11 Customer Support (800) 676- 1 343 • E-mail: support@telescope.com C o rp o r at e O ff i c es ( 83 1 ) 76 3 - 7 00 0 • 89 Hangar W ay , W atsonville, CA 95076 © 2011 Orion T elescopes & Binoculars Orion 8" and 1 0" f/3.
2 Congratulations on y our purchase of an Orion f/3.9 Ne wtonian Astrogr aph! These po werful imaging telescopes f eature “f ast, ” high-quality par abolic optics, a 2" dual-speed Cr a yf ord f ocuser , and e xcellent mechanical construction with some special f eatures .
3 packaging to ensure the telescope sta ys intact during shipping. T ake a moment to inspect the telescope and all of its par ts. Before pr oceeding with the instructions, refer to Figure 1 to familiarize your self with some of the features and com- ponents of the telescope.
4 Attaching the Finder Scope The included 9x50 crosshair finder scope (Figure 3a) is use- ful f or locating objects in the sky and centering them in the main telescope’ s field of vie w .
5 Cooling the T elescope All optical instruments need time to reach “thermal equilibri - um. ” The bigger the instrument and the larger the temperature change, the more time is needed. Allow at least 30 minutes f or your telescope to cool to the temper ature outdoors.
6 Attaching a CCD Camera The Orion f/3.9 Newtonian Astrographs are equipped to accept CCD cameras with a 2" nosepiece, or a 2" coma cor - rector in place of the nosepiece, which slides directly into the telescope’ s f ocuser lik e an e yepiece (Figure 5).
7 cal tube in front of the f ocuser . Both the 8" and 10" models hav e added length in front of the f ocuser , compared to a stan- dard Newtonian, to pre v ent an y possibility of incoming light from impinging directly on the secondar y mirror or entering the f ocuser dra wtube.
8 The Collimation Cap Y our f/3.9 Newtonian Astrog raph comes with a “quic k collima- tion cap” (Figure 9) . This is a simple cap that fits on the f o - cuser dra wtube like a dust cap , but has a tiny hole in the cen- ter and a reflective inner surf ace.
9 f or the time being. The secondary mirror itself should be cen- tered in the f ocuser dra wtube. If it is off-center along the axis of the telescope, i.e ., positioned too f ar tow ard the front open- ing or tow ard the rear of the telescope , as it is in Figure 8b , you will ha v e to adjust the mirror’ s axial position.
10 of the three alignment set screws b y , sa y , one full tur n, and then tighten the other two to tak e up the slac k (Figure 13). Do not loosen the center screw during this process. The goal is to center the primar y mirror reflection in the secondary mir- ror , as in Figure 8d .
11 cap on the ey epiece opening. K eep the telescope inside the hard storage carrying case when not in use. Store it indoors or in a dry garage. Do not leave the telescope outside e xcept when using it. The optical tube is aluminum and has a smooth anodized surf ace that should resist scratches and sm udges.
4. Specications Orion 8" f/3.9 Newtonian Astrograph Optical configuration: Newtonian reflector Aper ture: 203mm F ocal length: 800mm F ocal ratio: f/3.
An important point after buying a device Orion #8296 10" F/3.9 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Orion #8296 10" F/3.9 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Orion #8296 10" F/3.9 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Orion #8296 10" F/3.9 you will learn all the available features of the product, as well as information on its operation. The information that you get Orion #8296 10" F/3.9 will certainly help you make a decision on the purchase.
If you already are a holder of Orion #8296 10" F/3.9, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Orion #8296 10" F/3.9.
However, one of the most important roles played by the user manual is to help in solving problems with Orion #8296 10" F/3.9. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Orion #8296 10" F/3.9 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
