This telescope is inspected, measured and adjusted if necessary. The eyepiece output is stopped.
 
 
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BRESSER Messier AR-90s / 500 Optical Tube

High quality lens telescope for beginners
Lens diameter: 90mm / focal length: 500mm f / 5.5
Large field refractor telescope
Maximum recommended magnification: 180x
Scope of delivery: Optical tube, accessories
Prism rail (universal dovetail for EXOS / GP / EQ5 / LXD75)

BRESSER Messier AR-90s / 500 Optical Tube
Excellent for the entry into the astronomy: 90 mm opening offer about 200 times more light than the naked eye!
See craters, valleys and grooves on the moon almost 400,000km away, as if you are very close! The BRESSER MESSIER AR-90s offers detailed images, but not only of the moon: take a close look at the millions of kilometers distant division of the Saturn rings or discover the "Great Red Spot" of Jupiter, a huge cyclone in its atmosphere. Follow the seasons on Mars and recognize the sickle of Venus.

But even as a compact travel device makes the AR-90s very good service. Just by the shorter focal length of only 500mm, impressive wide-field observations of open star clusters and the Milky Way can be realized.

The MESSIER AR-90s already collects a multiple of light compared to the device with which Galileo Galilei made his famous discoveries nearly four hundred years ago.
The permanently installed Tauschutzkappe reduces any possible dew formation and prevents the incidence of stray side light, which additionally increases the contrast of the image.
On the pipe clamp of the AR-90s / 500 is a GP prism rail for attaching to the mount.

Technical specifications:

OPTICAL FEATURES

Optical design: Achromatic refractor
Magnification of: 15
Magnification up to: 180
Lens diameter: 90 mm
Focal length: 500 mm
Opening ratio: 5.5
Resolution: 1.53 arc seconds
Finderscope: 6 x 30 mm

GENERAL SPECIFICATIONS

Material tube: aluminum
Focusing drive: 1.25 "rack focuser
Color white
Warranty: 5 years

DIMENSIONS & WEIGHTS

Net weight optical tube (including accessories): 1.9 kg
Total length: 52 cm
Total width: 15 cm
Total height: 15 cm
Tube diameter: 105 mm
Tube length: 480 mm
Eyepiece Mating diameter: 31.8 mm