| Location: Sydney (AUS) | Sunrise: 06:22 | Sunset: 17:27 | GMT +10 |
 | Home  | Moon  | Monitor  | News  | About Me  | Site Map  | Guest Book  |   | 
Your browser did not load the style sheet and as a result the web page is not displaying correctly.
  • Cause: You use a low speed connection or the Internet is slow at this time. Solution: Hit the Refresh Button of the browser.
  • Cause: Your browser is not complying with the cascading style sheet used. Solution: Update your browser. We recommend Internet Explorer (IE) or FireFox.
Meade ETX 90
Comments
Meade ETX 90 is a telescope for the beginner, or a second telescope for a more serious astronomer that is looking for portability. It is relatively cheap and a bargain compared with Questar, which is better quality though. It is very good to look at the planets, Moon and the Sun, this being the reason I bought the ETX telescope. Is not very good for deep sky objects because of its small aperture (90mm).

Meade ETX 90 telescope

Specifications
Optical design: Maksutov-Cassegrain
Clear aperture: 90mm (3.5")
Focal length: 1250mm (48.6")
Focal ratio (photographic speed): f/13.8
Near focus: 3.5m (11.5')
Resolving power: 1.3 arc secs
Super Multi-coatings: standard
Limiting visual stellar magnitude: 11.7
Maximum practical visual power: 325x
Optical tube dimensions: D=10.4cm x L=27.9cm (4.1" x 11")
Secondary mirror obstruction: 27.9mm (1.1"); 9.6%
Telescope mounting: fork type; double tine
RA drive motor: 4.5-volts DC
Hemispheres of operation: north and south; switchable
Slow-motion controls: manual; R.A. and Dec
Bearings:R.A. and Dec: Nylon
Materials:
Tube body: aluminum
Mounting: high-impact ABS, steel reinforced
Primary mirror: Pyrex glass
Correcting lens: BK7 optical glass, Grade-A
Telescope dimensions: 38cm x 18cm x 22 cm (15" x 7" x 9")
Telescope (incl. tripod) net weight: 4.2kg (9.2 lbs)
Telescope shipping weight: 5.6kg (12.4 lbs)
Source: ETX User Manual
©Copyright 2024 Gabriel Ditu