2-year Telescope Warranty

AstroMaster 90AZ Telescope

Item # 21063

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AstroMaster Series Telescopes

Availability: In stock

$259.95
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Quick Overview

  • Quick and easy no-tool setup
  • Permanently mounted StarPointer
  • Erect image optics - Ideal for terrestrial and astronomical use
  • Quick release dovetail attachment - no tool setup
  • Pan handle Alt-Az control with clutch - for smooth and accurate pointing
  • Rugged pre-assembled tripod with 1.25" steel tube legs - Provides a rigid and stable platform
  • All coated glass optics for clear, crisp images
  • Deluxe accessory tray for convenient storage of accessories
  • “TheSkyX – First Light Edition” astronomy software with a 10,000 object database, printable sky maps and 75 enhanced images

AstroMaster 90AZ Telescope

Details

If you're looking for a dual-purpose telescope appropriate for both terrestrial and celestial viewing, then the AstroMaster Series is for you. Each AstroMaster model is capable of giving correct views of land and sky.

The AstroMaster Series produce bright, clear images of the Moon and planets. It is easy to see the moons of Jupiter and the rings of Saturn with every one of these fine instruments. For views of the brighter deep space objects like galaxies and nebulae, we recommend the larger aperture and light gathering ability of the Newtonian reflectors.

Additional Information

Optical Design Refractor
Aperture (mm) 90 mm (3.54 in)
Focal Length (mm) 1000 mm (39 in)
Focal Ratio 11
Eyepiece 1 (mm) 20 mm (0.79 in)
Magnification 1 50 x
Eyepiece 2 (mm) 10 mm (0.39 in)
Magnification 2 100 x
Finderscope Built-on StarPointer
Star Diagonal Erect Image Diagonal - 1.25"
Mount Altazimuth
Tripod 1.25" steel tube legs
Weight (lbs) 20 lbs (9.07 kg)
Highest Useful Magnification 213 x
Lowest Useful Magnification 13 x
Limiting Stellar Magnitude 12.3
Resolution (Rayleigh) 1.55 arc seconds
Resolution (Dawes) 1.29 arc seconds
Light Gathering Power (Compared to human eye) 165 x
Angular Field of View (deg) 1 °
Linear Field of View (@1000 yds) 53 ft (16 m)
Optical Coatings Multi Coated
Optical Tube Length 36 in (914 mm)
Tube Attachment Dovetail Bar

Instructional Videos

  • AstroMaster 90 EQ Telescope Setup Video

Knowledge Base

  1. What size of scope is best for different kinds of objects?
  2. Aperture
  3. Focal length
  4. Contrast
  5. Light gathering power and magnitude limit
  6. Telescope-Astronomy Resources on the Web
  7. What does magnitude mean?
  8. Exit pupil
  9. What are diffraction-limited optics?
  10. What is the focal ratio? How is it related to the f-stop?
  11. Near focus
  12. Field of view
  13. Magnification or power
  14. Resolution - resolving power
  15. Optical design aberrations
  16. I have a 60mm refractor with a focal length of 900mm. Why can't I get a clear image when I try to use my 2x Barlow lens with my 6mm eyepiece?
  17. Why don't the images I see through my telescope look the same as photos I see taken with the same type of telescope?
  18. How far can I see with a telescope?
  19. How do you determine a telescope's magnification?
  20. Everything I see through my refractor is an inverted image. How can I correct the image?
  21. Why does there appear to be a black circle in the middle of my image when I look at a star or planet?
  22. Why do I only see stars as points of light even when using my highest power eyepiece?
  23. What is back focus? What problems does it cause for visual and photographic use of my scope? What are related focus issues?
  24. I need to box up my scope and ship it. What's the best way to pack it?
  25. Why won't my image erecting eyepiece or image erecting diagonal always give right side up images with my scope?
  26. My StarPointer red-dot finderscope battery is dead. How do I replace it?
  27. What is field rotation? How does it affect my scope's viewing and imaging?
  28. What is a star party? Where do I find information on star parties in and around my area?
  29. I "accidentally" took apart my eyepiece, removing the lens that goes closest to my eye. Help! How do I put it back together?
  30. I "accidentally" took apart my Celestron 20 mm erecting eyepiece. How do I put it back together?
  31. I can't find anything with my StarPointer-equipped telescope - help!
  32. What is my scope's StarPointer for? How do I use it?
  33. How do I collimate my AstroMaster telescope - refractor?
  34. How do I put a better finderscope on my AstroMaster or LCM scope?
  35. Why do planets appear as small dots, even with my 10mm eyepiece?
  36. Where can I find a smartphone adapter to take pictures with my scope?
2-year Telescope Warranty

CELESTRON TWO YEAR LIMITED WARRANTY

A. Celestron warrants your telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. As a condition to the obligation of Celestron to repair or replace such product, the product must be returned to Celestron together with proof-of-purchase satisfactory to Celestron.

B. The Proper Return Authorization Number must be obtained from Celestron in advance of return. Call Celestron at (310) 328-9560 to receive the number to be displayed on the outside of your shipping container.

All returns must be accompanied by a written statement setting forth the name, address, and daytime telephone number of the owner, together with a brief description of any claimed defects. Parts or product for which replacement is made shall become the property of Celestron.

The customer shall be responsible for all costs of transportation and insurance, both to and from the factory of Celestron, and shall be required to prepay such costs.

Celestron shall use reasonable efforts to repair or replace any telescope covered by this warranty within thirty days of receipt. In the event repair or replacement shall require more than thirty days, Celestron shall notify the customer accordingly. Celestron reserves the right to replace any product which has been discontinued from its product line with a new product of comparable value and function.

This warranty shall be void and of no force of effect in the event a covered product has been modified in design or function, or subjected to abuse, misuse, mishandling or unauthorized repair. Further, product malfunction or deterioration due to normal wear is not covered by this warranty.

CELESTRON DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WHETHER OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE, EXCEPT AS EXPRESSLY SET FORTH HEREIN. THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COVERED PRODUCT, IN ACCORDANCE WITH THE TERMS SET FORTH HEREIN. CELESTRON EXPRESSLY DISCLAIMS ANY LOST PROFITS, GENERAL, SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES WHICH MAY RESULT FROM BREACH OF ANY WARRANTY, OR ARISING OUT OF THE USE OR INABILITY TO USE ANY CELESTRON PRODUCT. ANY WARRANTIES WHICH ARE IMPLIED AND WHICH CANNOT BE DISCLAIMED SHALL BE LIMITED IN DURATION TO A TERM OF TWO YEARS FROM THE DATE OF ORIGINAL RETAIL PURCHASE.

Some states do not allow the exclusion or limitation of incidental or consequential damages or limitation on how long an implied warranty lasts, so the above limitations and exclusions may not apply to you.

This warranty gives you specific legal rights, and you may also have other rights which vary from state to state.

Celestron reserves the right to modify or discontinue, without prior notice to you, any model or style telescope.

If warranty problems arise, or if you need assistance in using your telescope contact:

Celestron
Customer Service Department
2835 Columbia Street
Torrance, CA 90503
Tel. (310) 328-9560
Fax. (310) 212-5835

Monday-Friday 8AM-4PM PST

NOTE: This warranty is valid to U.S.A. and Canadian customers who have purchased this product from an authorized Celestron dealer in the U.S.A. or Canada. Warranty outside the U.S.A. and Canada is valid only to customers who purchased from a Celestron's International Distributor or Authorized Celestron Dealer in the specific country. Please contact them for any warranty service.

Where To Buy

Premier Select dealers offer an extensive selection of Celestron products in stock for immediate delivery while providing a high level of product knowledge and customer service.
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For a complete list of Celestron dealers, please visit our Dealer Locater