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 91510 instruction manual C80-HD #21077 C102-HD, C150-HD, #21016, #31056

91510 specifications

The Celestron 91510 is a remarkable telescope that offers astronomy enthusiasts a blend of quality, portability, and advanced features, making it a popular choice for both beginners and seasoned stargazers alike. Known for its impressive optics, the Celestron 91510 utilizes a 70mm refractor design that provides bright and clear images, ideal for observing celestial objects such as planets, stars, and deep-sky phenomena.

One of the standout features of the Celestron 91510 is its fully coated optics, which enhance light transmission and improve image quality. This ensures that users can observe fine details in celestial bodies, such as the rings of Saturn or the craters on the Moon. The telescope comes with two eyepieces of different focal lengths, allowing for varying magnification. This versatility enables users to explore the night sky with ease, offering both wide-field views of star clusters and higher magnification for detailed observations.

Portability is another significant advantage of the Celestron 91510. Designed with travel in mind, this telescope is lightweight and compact, making it easy to set up and transport. It features a sturdy yet portable mount that provides stable support during observations. The pan-and-tilt head allows for smooth tracking of celestial objects, ensuring that users can focus on their targets without hassle.

Moreover, the telescope includes a red dot finder which aids in locating objects quickly in the night sky. This user-friendly feature is especially beneficial for beginners who may find it challenging to navigate the stars. The adjustable tripod provides a stable base and can be set to various heights, ensuring comfort during extended viewing sessions.

Celestron's commitment to quality and innovation is evident in the design of the 91510. It incorporates durable materials that withstand the rigors of outdoor use, ensuring longevity. Additionally, the telescope's overall aesthetic appeal, complete with a sleek design, adds to the enjoyment of using this astronomical instrument.

In summary, the Celestron 91510 is an excellent choice for anyone looking to delve into the wonders of astronomy. With its high-quality optics, user-friendly features, and portability, it offers an enjoyable stargazing experience. Whether you are a novice wanting to explore the cosmos or an experienced astronomer seeking a reliable companion, the Celestron 91510 stands out as an exceptional option.