PowerSeeker 76 Telescope

por | 15 diciembre, 2011

http://www.celestron.com/portal/celestron-powerseeker-76-telescope.html

PowerSeeker 76 Telescope
Item # 21044

Aperture 76 mm (2.99 in)
Focal Length (mm) 700 mm (28 in)
Focal Ratio 9.21
Eyepiece 1 (mm) 20 mm (0.79 in)
Magnification 1 35 x
Eyepiece 2 (mm) 4 mm (0.16 in)
Magnification 2 175 x
Barlow Lens 3 x
Finderscope 5×24
Mount Altazimuth
Accessory Tray No-Tool Tray with Eyepiece holder
CD ROM “The Sky®” Level 1
Tripod Aluminum
Weight (lbs) 14 lbs (6.35 kg)
Highest Useful Magnification 180 x
Lowest Useful Magnification 11 x
Limiting Stellar Magnitude 46
Resolution (Rayleigh) 1.83 arc seconds
Resolution (Dawes) 1.53 arc seconds
Photographic Resolution 217 line/mm
Light Gathering Power 118 x
Angular Field of View (deg) 1.2 °
Linear Field of View (@1000 yds) 62 ft (19 m)
Secondary Mirror Obstruction 0.75 in (19 mm)
Secondary Mirror Obstruction by Diameter 25 %
Secondary Mirror Obstruction by Area 6.28 %
Optical Coatings Aluminum
Optical Tube Length 27 in (686 mm)
Telescope Weight 14 lbs (6.35 kg)