azimuth adjustment bolts. It may be necessary to partially unscrew the bolts to allow the metal peg to fully extend into the altazimuth housing.

4.Tighten the knob located on the underside of the tripod head. This will hold the equatorial mount firmly to the tripod head.

Attaching the Accessory Tray

Next, attach the accessory tray to the tripod. Locate the accessory tray and the three wingnut screws to attach the tray.

1.Place the accessory tray on the center support brace of the tripod and align the holes on the tray with those on the support brace.

2.Insert the wingnut screws through the bottom of the tripod support brace and thread them into the accessory tray holes.

With the accessory tray in place, the tripod will be much more stable, making it easier to attach the telescope.

Installing the Counterweight Bar

With the mount securely in place, you are ready to attach some of the accessories (the telescope tube will be added last). Start with the Counterweight Bar and Counterweights. Used to balance the telescope, the Counterweight Bar attaches to the opposite side of the mount as the telescope. To install the Counterweight Bar:

Retract the counterweight bar lock nut by turning it counterclockwise. This will expose the threads on the end of the Counterweight Bar.

Thread the Counterweight Bar into the mount completely. It threads into the mount opposite the telescope.

1.Tighten the lock nut fully for added support.

2.The Counterweight Bar is now installed.

3.Installing the Counterweights

With the counterweight bar in place, you are ready to attach the counterweights.

1.Remove the safety thumbscrew on the end of the counterweight bar.

2.Loosen the counterweight lock screw (on the counterweight itself) so that the central hole of the counterweight is unobstructed.

3.Slide the counterweight onto the counterweight bar. Move it high enough to allow room for the second weight (if included).

4.Tighten the counterweight lock screw to hold it in position.

5.Repeat this process for the second weight.

6.Replace the thumbscrew on the end of the counterweight bar. The thumbscrew will prevent the counterweight(s) from sliding off the bar should they ever become loose.

Attaching the Optical Tube

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Celestron 31027, 21077, 21016 Attaching the Optical Tube, Installing the Counterweight Bar, Installing the Counterweights
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21077, 1510, 21016, 31027 specifications

Celestron is a renowned brand in the world of astronomy, known for producing high-quality telescopes and accessories that cater to both beginners and seasoned enthusiasts. Among their popular products, the Celestron 31027, 21016, 1510, and 21077 telescopes stand out due to their distinctive features, innovative technologies, and user-friendly designs.

The Celestron 31027, also known as the Astromaster 70AZ telescope, is an excellent choice for novices. It features a 70mm aperture, which provides striking clarity of celestial objects. With a lightweight and portable design, this telescope is easy to transport and set up. The smooth Alt-Az mount allows for effortless tracking of objects, and the included finderscope enhances navigation through the night sky. Additionally, the Astromaster 70AZ comes with two eyepieces, offering different magnification options for both planetary and deep-sky observations.

Celestron's 21016 model, the Astromaster 90AZ telescope, takes the features of the 31027 to a higher level with a 90mm aperture. This larger gathering of light significantly enhances the viewing experience, providing detailed images of planets, the Moon, and star clusters. Similar to the 31027, it also includes a sturdy Alt-Az mount and high-quality optics, making it user-friendly for beginners and experienced users alike.

The Celestron 1510 telescope, part of the FirstScope series, is uniquely designed with a compact and portable form factor ideal for impromptu stargazing. This telescope features a 76mm aperture and a simple design optimized for ease of use. The FirstScope's ease of assembly and lightweight construction allows observers to quickly set up the telescope and enjoy a night under the stars. Remarkably, the 1510 model incorporates a stable base, making it perfect for both stationary use and quick setups in the field.

The Celestron 21077 is the NexStar 5SE telescope, which offers an advanced experience with its computerized mount and a 125mm aperture. This telescope is equipped with Celestron's SkyAlign technology, allowing users to quickly align the telescope with the night sky using three simple star alignments. The NexStar 5SE comes with a database of thousands of celestial objects, enabling users to locate planets, star clusters, and galaxies with ease. Additionally, its compact design ensures portability while still providing excellent light-gathering capabilities.

In summary, Celestron's 31027, 21016, 1510, and 21077 telescopes each present unique advantages that cater to different levels of experience and usage preferences. From beginner-friendly models that prioritize ease of use, to more advanced options with computerized features, Celestron effectively bridges the gap between novice and experienced stargazers. Each telescope is meticulously designed, making stunning astronomical views accessible to everyone.
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