Orion 9786, Manual

8

one‑Year limited Warranty

This Orion 6" Newtonian Imaging Reflector is 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 pur­
chaser 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. If the product is not registered, proof of 
purchase (such as a copy of the original invoice) 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: Customer Service Department, Orion Telescopes & Binoculars, 89 Hangar Way, Watsonville, CA 
95076; (800)­676­1343.

orion telescopes & Binoculars

89 Hangar Way, Watsonville, ca 95076

Customer Support Help Line (800)‑676‑1343 • Day or Evening

100% isopropyl alcohol. Submerge the mirror (aluminized 
face up) in the water and let it soak for a few minutes (or hours 
if it’s a very dirty mirror). Wipe the mirror under water with 
clean cotton balls, using extremely light pressure and strok­
ing in straight lines across the mirror surface. Use one ball 
for each wipe across the mirror. Then rinse the mirror under 
a stream of lukewarm water. Any particles on the surface can 
be swabbed gently with a series of cotton balls, each used 
just one time. Dry the mirror surface with a stream of air (a 
“blower bulb” works great). Cover the mirror surface with tis­
sue, and leave the mirror in a warm area until it is completely 
dry before replacing it in the mirror cell and telescope.

specifications

Optical tube: 

Steel 

Primary mirror: 

Parabolic, center marked 

Collimation adjustment:  Three spring­loaded thumbnuts 

to adjust mirror tilt, one thumbnut 
in­line with focuser, three thumb­
screws to lock mirror position

Aperture: 

6" (150mm)

Focal length: 

750mm 

Focal ratio: 

f/5.0

Minor axis of  
secondary mirror: 

2.28" (58.0mm)

Secondary mirror offset:  2.9mm away from focuser and 

2.9mm towards primary mirror

Mirror coatings: 

Aluminum with silicon dioxide 
(SiO

2

) overcoat

Focuser: 

Crayford, accepts 2" accessories, 
dual­speed focus adjustment, 
rotatable, focus­lock equipped

Minimum focus height: 

43mm

Focus travel: 

24mm, 68mm with 2" drawtube 
extended

1.25" adapter: 

Included, compression­fit design

Weight: 

10.5 lbs. 

Length: 30.5"