Orion Observer 90mm User Manual

16
Copyright © 2021 Orion Telescopes & Binoculars. All Rights Reserved. No part of this product instruction or any of its contents
may be reproduced, copied, modied or adapted, without the prior written consent of Orion Telescopes & Binoculars.
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Corporate Offices: 89 Hangar Way, Watsonville CA 95076 - USA
Toll Free USA & Canada: (800) 447-1001
International: +1(831) 763-7000
Customer Support: support@telescope.com
IX. Specifications
Observer 90mm EQ Refractor
Lens aperture: 90mm (3.5")
Lens assembly: Achromatic doublet
Lens coating: Fully MgF2 coated
Focal length: 900mm
Focal ratio: f/10
Focuser: Rack-and-pinion, accepts 1.25"
accessories
Eyepieces: 25mm and 10mm Plossl, fully
coated, 1.25" barrel diameter,
threaded for Orion lters
Eyepiece magnication: 36x (25mm eyepiece) and 90x
(10mm eyepiece)
Finder scope: 6x30 achromatic
Diagonal: 90-degree mirror star diagonal
Mount: German equatorial
Tripod: Aluminum
Total instrument weight: 16 lbs., 12.2 oz.
Observer 114mm EQ Reflector
Primary mirror diameter: 114mm (4.5")
Primary mirror coating: Aluminum with silicon dioxide
(SiO2) overcoat
Secondary mirror
minor axis dia.: 35.2mm
Central obstruction 37.4mm
Focal length: 500mm
Focal ratio: f/4.4
Focuser: Rack-and-pinion, accepts 1.25"
accessories
Eyepieces: 25mm and 10mm Plossl, fully
coated, 1.25" barrel diameter,
threaded for Orion lters
Eyepiece magnication: 20x (25mm eyepiece) and 50x
(10mm eyepiece)
Finder scope: Red dot nder scope
Mount: German equatorial
Tripod: Aluminum
Total instrument weight: 16 lbs., 1.5 oz.
Observer 134mm EQ Reflector
Primary mirror diameter: 134mm (5.3")
Primary mirror coating: Aluminum with silicon dioxide
(SiO2) overcoat
Secondary mirror
minor axis dia.: 43mm
Central obstruction 39.8mm
Focal length: 650mm
Focal ratio: f/4.8
Focuser: Rack-and-pinion, accepts 1.25"
accessories
Eyepieces: 25mm and 10mm Plossl, fully
coated, 1.25" barrel diameter,
threaded for Orion lters
Eyepiece magnication: 26x (25mm eyepiece) and 65x
(10mm eyepiece)
Finder scope: 6x30 achromatic
Mount: German equatorial
Tripod: Aluminum
Total instrument weight: 18 lbs., 4.3 oz.
One-Year Limited Warranty
This Orion product is warranted against defects in materials or
workmanship for a period of one year from the date of purchase.
This warranty is for the benet of the original retail purchaser
only. During this warranty period Orion Telescopes & Binoculars
will repair or replace, at Orion’s option, any warranted instru-
ment that proves to be defective, provided it is returned postage
paid. Proof of purchase (such as a copy of the original receipt) is
required. This warranty is only valid in the country of purchase.
This warranty does not apply if, in Orion’s judgment, the instru-
ment has been abused, mishandled, or modied, nor does it
apply to normal wear and tear. This warranty gives you specic
legal rights. It is not intended to remove or restrict your other
legal rights under applicable local consumer law; your state or
national statutory consumer rights governing the sale of con-
sumer goods remain fully applicable.
For further warranty information, please visit www.
OrionTelescopes.com/warranty.

Orion Observer 90mm Specifications

General

Brand	Orion
Model	Observer 90mm
Category	Telescope
Language	English