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      Home -> Products -> Telescopes -> Astronomical Telescopes -> ASTELE™ 133.5

ASTELE 133.5 (Astronomical Telescope)

ASTELE™ 133.5 EL

The ASTELE™ 133.5 is an excellent astronomical telescope for observing the heavens.

Its optical design is Maksutov Cassegrain
Its diffraction-limited optics are multi-coated, and this makes ASTELE™ 133.5 a great instrument for doing astrophotography delivering pin-point images over a 35mm format.
If you are looking for a telescope with superb optics that is easy to setup, the ASTELE™ 133.5 is that and more. It is ideal for a professional or an advanced amateur astronomer.
The ASTELE™ 133.5 uses U.S. standard 1.25" O.D.-sized eyepieces (hundreds are available).

The ASTELE™ 133.5 is available in three models:

  • The ASTELE™ 133.5 OTA (Optical Tube Assembly).
  • The ASTELE™ 133.5 G (German Equatorial Mount)
  • The ASTELE™ 133.5 EL (with motorized base, shown)

The ASTELE™ 133.5 G (German Equatorial Mount) comes with slow-motion controls, setting circles, polar axis finder, accessory tray, and fully adjustable aluminum tripod.

Finish: black
Photo adapters for standard cameras and lens shade are available separately.

SPECIFICATIONS ASTELE™ 133.5 OTA ASTELE™ 133.5 G ASTELE™ 133.5 EL 
Optical Design Maksutov-Cassegrain Maksutov-Cassegrain Maksutov-Cassegrain
Optical Diameter: 133.5 mm (5.25") 133.5 mm (5.25") 133.5 mm (5.25")
Focal Length: 1335 mm (52.6") 1335 mm (52.6") 1335 mm (52.6")
F-Ratio: f/10 f/10 f/10
Angular Field of View: 51'30"

51'30"

51'30"
Resolving Power (arc sec) 0.9 0.9 0.9
Optical Coatings Multi-coated Multi-coated Multi-coated
Limiting Visual Magnitude (approx) 13.5 13.5 13.5
Maximum Practical Visual Power
• with 25 mm eyepiece
• with 10 mm eyepiece
270 X
53 X
134 X
270 X
53 X
134 X
270 X
53 X
134 X
Viewfinder 8 x 40 mm, 90° 8 x 40 mm, 90° 8 x 40 mm, 90°
Optical Tube Dimensions (diameter x length) 164 mm x 440 mm (6.5" x 17.3") 164 mm x 440 mm (6.5" x 17.3") 164 mm x 440 mm (6.5" x 17.3")
Secondary Mirror Obstruction 38 % 38 % 38 %
Main Mirror
• material
• surface quality

Astrosital glass
/ 8

Astrosital glass
/ 8

Astrosital glass
/ 8
Meniscus
• material
• surface quality

Pyrex glass
/ 8

Pyrex glass
/ 8

Pyrex glass
/ 8
Eyepiece Holder: 1.25" (31.7 mm) 1.25" (31.7 mm) 1.25" (31.7 mm)
Focusing Range 4 m (13') – infinity 4 m (13') – infinity 4 m (13') – infinity
Diagonal mirror / prism mirror mirror mirror
Mounting Type German-type equatorial Fork mount
Tripod optional  Aluminum w / GEM (A9025)  Aluminum (A9027)
Wedge Assembly Weight 6 kg (13 lb)
Total Telescope Net Weight: 5.3 kg (12 lb) 17.5 kg (40 lb) 21 kg (46 lb)
  Suggested Retail Price:
  $1,099.95 $1,449.95 $1,699.95



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For more information please contact us at:
LOMO America, Inc.
3130 Commercial Ave, Northbrook, IL 60062
Tel.: (847) 215-8800, Fax: (847) 215-9073
E-mail: info@lomoamerica.com


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