Orion 70MM AZ Details of the Optical Tube and Components, Objective lens, Glare/Dew shield

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Details of the Optical Tube and Components

Figure 2a shows the details of the optical tube (1) and its various parts. The optical tube is shown attached to the mount for clar- ity. Figure 2b is a close up of the focuser with even more detail.

8Objective lens

This is the main optical component of the telescope. It is an achromatic, fully coated 70mm diameter lens.

9Glare/Dew shield

This is a simple hood for the objective lens (8) that pre- vents dew formation and stray light from hitting the lens.

10Altitude castings

These castings are built into the optical tube (1). The yoke knobs (18) thread into these castings through the holes in the top of the yoke altazimuth mount (5) to secure the two parts together.

11EZ Finder II mounting bracket

This secures the EZ Finder II (4) to the optical tube (1).

12Micro-motion rod attachment post

This post is where the micro-motion rod (13) attaches to the optical tube (1).

13Altitude micro-motion control rod and thumb- wheel

This allows fine adjustment of the telescope in the alti- tude (up-down) direction. For more details, see the Getting Started section.

14Focuser drawtube

This is where the 90° mirror star diagonal (2) is inserted. The drawtube is adjusted by the turning the focus wheel (15), which adjusts a rack-and-pinion gear sys- tem to bring objects into focus.

15Focus wheels

These wheels, when turned, move the focuser drawtube

(14)in or out. Use it to bring things into focus when you are looking in the eyepiece (3).

16Diagonal holder thumbscrews

These two thumbscrews secure the 90° mirror star diago- nal (2) into the focuser drawtube (14). These should only be loosened to remove or rotate the star diago- nal.

17Eyepiece holder thumbscrews

These thumbscrews hold the eyepiece in position. Tighten them after inserting an eyepiece (3); loosen them before removing or changing eyepieces.

18Yoke knobs

These knobs secure the optical tube to the altazimuth yoke mount (5). They should always be securely tight- ened.

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Contents Orion Observer 70mm AZ Page Parts List Table of ContentsUnpacking Observer 70 Components Observer 70 RefractorBasic Components of Your Telescope Optical tube components Observer 70 Telescope TubeAltitude castings Details of the Optical Tube and ComponentsObjective lens Glare/Dew shieldTripod and mount detail Observer 70 Tripod and MountTripod leg attachment screws Accessory tray bracketDetails of the Tripod and Mount Azimuth lock knobGetting Started AssemblyAltitude and Azimuth Aiming the Telescope Do You Wear Eyeglasses? Focusing the TelescopeOperating the EZ Finder II reflex finder Choosing an Observing Site Using Your TelescopeReplacing the EZ Finder II Battery Aligning the EZ FinderTracking Celestial Objects Light PollutionEyepiece Selection Magnification Limits 700mm25mm =What to Expect Objects to ObserveCleaning Lenses Care and MaintenanceTerrestrial Viewing Specifications One-Year Limited Warranty

70MM AZ specifications

The Orion 70MM AZ telescope is an impressive entry-level telescope designed for stargazers who want to explore the night sky with ease. Ideal for beginners and casual astronomers, the 70MM AZ combines simplicity with the essential features to deliver a satisfying astronomical experience.

One of the primary features of the Orion 70MM AZ is its 70mm aperture. This size strikes a perfect balance between portability and light-gathering ability, allowing users to observe celestial objects such as the Moon, planets, and some deep-sky objects. The telescope is equipped with a fully coated glass lens that enhances image brightness and clarity, ensuring that every view of the cosmos is enjoyable.

The telescope's optical design incorporates a refractor system, which is known for producing crisp, sharp images without the need for frequent maintenance. Refracting telescopes are particularly user-friendly because they require minimal collimation compared to reflecting telescopes. As a result, the Orion 70MM AZ is a great choice for novices who may not yet be familiar with telescope maintenance.

A standout feature of the Orion 70MM AZ is its Altazimuth mount. This type of mount allows for intuitive up-and-down and side-to-side movements, making it easy for users to locate and track astronomical objects. The mount is designed for smooth motion and requires minimal setup, so users can spend more time stargazing and less time fumbling with equipment.

Additionally, the Orion 70MM AZ is lightweight and portable, making it easy to transport to dark sky locations. Its user-friendly design means it's perfect for family outings or educational events, allowing users of all ages to experience the wonders of the universe.

To enhance the observing experience, the telescope includes two eyepieces: a 10mm and a 25mm. These provide different magnification options that suit various viewing needs. The inclusion of a finderscope further aids in locating objects in the vastness of space.

In summary, the Orion 70MM AZ telescope is a versatile and accessible option for anyone keen on discovering the universe. With its 70mm aperture, refractor design, Altazimuth mount, and user-friendly features, it stands as a compelling choice for beginners and seasoned astronomers alike. Whether spotting craters on the Moon or viewing distant planets, this telescope offers an engaging way to connect with the beauty of the night sky.
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