Celestron NexStar 90SLT

Maksutov-Cassegrain

Availability: In Stock

Brand New Includes Two Year Warranty
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$539.95
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  • Technical Features

Technical Features for Celestron NexStar 90SLT

The Celestron 22087 is a 3.54-inch Maksutov-Cassegrain telescope with a sturdy stainless steel tripod and accessory tray and fully computerized GoTo Altazimuth mount with quick-release fork arm, optical tube and accessory tray for quick no tool set up. The 3.54-inch aperture provides excellent light-gathering ability and SkyAlign technology gets your telescope aligned and ready to observe in minutes. The telescope includes NexRemote telescope control software and RS-232 cable for advanced control of the telescope with a PC.

The Celestron 22087 features SkyAlign allows alignment on any three bright celestial objects, making for a rapid, efficient alignment process and StarPointer finderscope helps with alignment and locating objects. It comes with a flash upgradeable hand control software and motor control units for downloading product updates over the Internet and internal battery compartment to prevent cord wrap during use.
Celestron NexStar 90SLT Specification
Optical Tube Info:
  • Optical Design
    Maksutov-Cassegrain
  • Aperture (mm)
    90 mm (3.54 in)
  • Focal Length
    1250 mm (49 in)
  • Focal Ratio
    14
  • Focal Length of Eyepiece 1(mm)
    25 mm (0.98 in)
  • Magnification of Eyepiece 1
    50 x
  • Focal Length of Eyepiece 2 (mm)
    9 mm (0.35 in)
  • Magnification of Eyepiece 2
    139 x
  • Finderscope
    StarPointer
  • Star Diagonal
    1.25"
  • Mount Type
    Motorized Altazimuth
  • Accessory Tray
    No Tool, Quick release
  • Tripod
    Steel
  • 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
  • Apparent Field of View
    1°
  • Linear Field of View (@1000 yds)
    53 ft (16 m)
  • Optical Coatings
    Fully-Coated
  • Slew Speeds
    Nine slew speeds
  • Tracking Rates
    Sidereal, Solar and Lunar
  • Tracking Modes
    Alt-Az, EQ North and EQ South
  • Alignment Procedures
    SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align
  • Computer Hand Control
    Fully Computerized / Flash Upgradeable
  • Database
    4,000 Object Database
  • GPS
    Optional SkySync GPS Accessory (93969)


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Buyer Guide
Comparision Chart

22087 Features:

  • 3.54 Inch Aperture (90mm)
  • Computerized With 4,000 Accessible Objects
  • 213x Maximum Magnification
  • Focal Length: 1250mm, f/14.0 Focal Ratio
  • StarPointer Finderscope
  • Steel Tripod
  • Motorized Altazimuth Mount
  • NexRemote
  • SkyAlign Technology
    - Allows To Align On Any 3 Bright Celestial Objects
    - Making Fast & Easy Alignment Process
  • Flash Upgradeable
NexStar 90SLT Technical Specs
  • Optical Design
    Maksutov-Cassegrain
  • Aperture (mm)
    90 mm (3.54 in)
  • Focal Length (mm)
    1250 mm (49 in)
  • Focal Ratio
    14
  • Focal Length of Eyepiece 1 (mm)
    25 mm (0.98 in)
  • Magnification of Eyepiece 1
    50 x
  • Focal Length of Eyepiece 2 (mm)
    9 mm (0.35 in)
  • Magnification of Eyepiece 2
    139 x
  • Finderscope
    StarPointer
  • Star Diagonal
    1.25"
  • Mount Type
    Motorized Altazimuth
  • Accessory Tray
    No Tool, Quick release
  • Tripod
    Steel
  • 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
  • Apparent Field of View
    1°
  • Linear Field of View (@1000 yds)
    53 ft (16 m)
  • Optical Coatings
    Fully-Coated
  • Slew Speeds
    Nine slew speeds
  • Tracking Rates
    Sidereal, Solar and Lunar
  • Tracking Modes
    Alt-Az, EQ North and EQ South
  • Alignment Procedures
    SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, Solar System Align
  • Computer Hand Control
    Fully Computerized / Flash Upgradeable
  • Database
    4,000 Object Database
  • GPS
    Optional SkySync GPS Accessory (93969)
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NEXSTAR SERIES TELESCOPES
NexStar
5SE
NexStar
4SE
NexStar
6SE
NexStar
8SE
NexStar
Evolution 6
NexStar
Evolution 8
NexStar
Evolution
9.25
NexStar
90 SLT
NexStar
90 GT
NexStar
102 SLT
NexStar
127 SLT
NexStar
114 GT
NexStar
130 SLT
Item Number
11036
11049
11068
11069
12090
12091
12092
22087
22095
22096
22097
22098
31145
Aperature Size
5"
4"
6"
8"
6"
8"
9.25"
3.5"
3.5"
4"
5"
4.5"
5"
Computerized
Max.Magnification
295x
241x
354x
354x
354x
480x
555x
213x
228x
241x
300x
269x
307x
Focal length
1250mm
1325mm
1500mm
2032mm
1500mm
2032mm
2350mm
1250mm
910mm
660mm
1500mm
500mm
650mm
Focal Ratio
f/10.0
f/13.0
f/10.0
f/10.0
f/10.0
f/10.0
f/10.0
f/14.0
f/10.1
f/6.5
f/12.0
f/4.4
f/5.0
Tripod
Mount Type
Single Fork
Altazimuth
Single Fork
Altazimuth
Single Fork
Altazimuth
Single Fork
Altazimuth
Single Fork
Altazimuth
Single Fork
Altazimuth
Single Fork
Altazimuth
Altazimuth
Single Fork
Altazimuth
Altazimuth
Altazimuth
Altazimuth
Altazimuth
Motorized Mount
Optical Design
Schmidt-
Cassegrain
Maksutov-
Cassegrain
Schmidt-
Cassegrain
Schmidt-
Cassegrain
Schmidt-
Cassegrain
Schmidt-
Cassegrain
Schmidt-
Cassegrain
Maksutov-
Cassegrain
Refractor
Refractor
Maksutov-
Cassegrain
Newtonian
Newtonian
Skyalign Auto-Align
Finderscope
Bulti-In
Hand Control
Wi-Fi Module
93973
93973
93973
93973
Built-In!
Built-In!
Built-In!
93973
93973
93973
93973
93973
93973
Compatible Eyepiece
& Filter Set
94303
94303
94303
94303
94303
94303
94303
94303
94303
94303
94303
94303
94303
Backup Power Supply
18774
18774
18774
18774
18774
18774
18774
18774
18774
18774
18774
18774
18774
Skyportal App
Compatible
 
 
 
 
 
 
 
 
 
 
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Celestron 22087 Includes:
  • 25 mm Eyepiece
  • 9.0 mm Eyepiece
  • StarPointer Finderscope
  • Computerized Altazimuth Mount
  • Hand Controller
  • 'The Sky' Level 1 CD-ROM
  • NexStar Observers List CD-ROM


The Celestron NexStar 90SLT has many exciting features for users of all types. It's one of FactoryOutletStore's best selling Celestron NexStar Series Telescopes. You can extend the lifetime of your Celestron NexStar 90SLT with the purchase of a FactoryOutletStore Factory Protection Plan. See the Celestron NexStar 90SLT product video and gallery images above for more details. FactoryOutletStore stocks a full line of accessories like AC Adapter, Celestron Eyepiece and Filter Kit, and Celestron LensPen - Optics Cleaning Tool for the Celestron NexStar 90SLT. The Celestron NexStar 90SLT is sold as a Brand New Unopened Item.
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