The best way to re-collimate is with a good collimation tool. Celestron offers a Newtonian Collimation Tool (#94183) with detailed instructions that make it an easy chore.

Technical Specifications

 

C80-HD (#21077)

C102-HD

C114-HD

C150-HD

 

 

(#21016)

(#31027)

(#31056)

Optical System:

Achromat

Achromat

Newtonian

Newtonian

 

Refractor

Refractor

Reflector

Reflector

Coating:

Fully Multi-Coated

Fully Multi-

Multi Coated

Multi Coated

 

 

Coated

 

 

Aperture:

80mm

102mm

114mm

150mm

Focal Length:

900mm

1000mm

900mm

1000mm

F/ratio:

f/11

f/10

f/8

F/7

Magnification (with standard eyepiece)

45x

50x

45x

50x

Highest Useful Power Magnification:

189x

241x

269x

354x

Resolution in arc seconds (Dawes)

1.45

1.14

1.02

0.77

Light Gathering Power:

131

212

265

459

Limiting Visual Magnitude:

12

12.5

13

13.5

Angular Field of View:

1.1°

1.1°

Linear Field of View (at 1000 yds.)

57’

53’

57'

53’

Optical Tube Length:

35"

38.5"

35"

19.25”

Weight

 

 

 

 

Optical Tube:

6 lbs.

8.0 lbs.

6 lbs.

13 lbs.

Equatorial Mount (with counterweight):

23 lbs.

28 lbs.

28 lbs.

28 lbs.

Note: All specifications are using the standard accessories. These specifications are approximate and subject to change without notice.

OPTIONAL ACCESSORIES

Celestron International offers a wide assortment of optional accessories to expand your interests.

Sky Maps (#93722) - Invaluable when learning the night sky. They include all the constellations with the brighter deep-sky objects. On the front cover is a rotating planisphere which indicates when specific constellations are visible.

Flashlight - LED (#93588) - Uses red LED's to allow reading star maps and locating telescope accessories and controls without ruining you night vision.

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Celestron 1510, 31027 instruction manual C80-HD #21077 C102-HD, C150-HD, #21016, #31056

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.