Orion 102mm EQ instruction manual Specifications

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10. Specifications

Then apply some cleaning fluid to a tissue, never directly on the optics. Wipe the lens gently in a circular motion, then remove any excess fluid with a fresh lens tissue. Oily finger- prints and smudges may be removed using this method. Use caution; rubbing too hard may scratch the lens. For the large surface of the meniscus lens, clean only a small area at a time, using a fresh lens tissue on each area. Never reuse tissues.

10. Specifications

Optical design: Maksutov-Cassegrain

Aperture: 102mm

Effective focal length: 1300mm

Focal ratio: f/12.7

Central obstruction diameter: 31mm

Primary mirror coating: Aluminum with overcoat

Meniscus lens coating: Anti-reflection multi-coatings on both sides of lens

Eyepiece adapter: Accepts 1.25" accessories, camera t-threads

Eyepiece: 25mm Sirius Plossl, fully coated with multi-coatings, 1.25" format

Magnification with supplied eyepiece: 52x

Actual field of view with supplied eyepiece: 0.92°

Diagonal: 90° mirror star diagonal, 1.25" format

Near focus (with supplied eyepiece & diagonal): Approximately 11 feet

Finder scope: 6x magnification, 26mm aperture, correct-image, achromatic, 6.3° field

Finder scope bracket: Dovetail base, spring-loaded X-Y alignment

Optical tube mounting block: Fits standard photo-style tripods

Mount: EQ-2, German-type equatorial

Slow-motion controls: R.A. and Dec. axes

Setting Circles: R.A. scaled in 10 minute increments, Dec. scaled in 1° increments

Counterweight: 4.8 lbs

Latitude range: 5° to 75°

Tripod: Adjustable-height aluminum legs, accessory tray included

Case: Deluxe carry case for optical tube included, padded case for EQ-2 mount optional

Motor drives: Optional

Weight: 21.9 lbs (tube 5.0 lbs, mount 16.9 lbs)

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Contents E-mail support@telescope.com #9824 Equatorial Maksutov-Cassegrain TelescopeCustomer Support Orion StarMax 102mm EQFinder scope Finder scope bracket Eyepiece Star diagonal 1. Unpacking Table of Contents2. Parts List Latitude adjustment t-bolt Latitude lock t-bolt Azimuth lock knob 3. AssemblyDec. slow-motion control cable Dec. setting circle R.A. setting circle lock thumbscrew R.A. setting circleEyepiece end of finder scope Alignment thumb screws O-ring 4. Getting StartedSpring-loaded tensioner Balancing the TelescopeAligning the Finder Scope Focusing the TelescopeDo You Wear Eyeglasses? Alignment 5. Setting Up and Using the Equatorial MountObjective lens FocusUse of the R.A. and Dec. Slow-Motion Control Cables Understanding the Setting CirclesCalibrating the Right Ascension Setting Circle Tracking Celestial ObjectsPlastic R.A. gear cover R.A. coordinate indicator arrow Dec. coordinate indicator arrow Celestial equator Dec. =Use these numbers on the R.A. setting circle Northern Hemisphere Finding Objects With the Setting CirclesChoosing an Observing Site 6. Using Your Telescope- Astronomical Observinga.b c.d “Seeing” and TransparencyC. The Planets A. The MoonB. The Sun Magnification = focal length of telescope ÷ focal length of eyepieceE. Deep-Sky Objects D. The StarsHow to Find Deep-Sky Objects Star Hopping 8. Photography 9. Care and Maintenance7. Terrestrial Viewing Cleaning the Tube10. Specifications Page One-Year Limited Warranty Orion Telescopes & BinocularsPost Office Box 1815, Santa Cruz, CA Customer Support Help Line 800676-1343 Day or EveningCollimating the StarMax/Apex Collimating Orion StarMax and Apex Maksutov-Cassegrain TelescopesStar-Testing the Telescope Figure 2a Finishing Collimation If the alignment screw is a large screwIf the alignment screw is a small screw