Bresser Refractor MESSIER AR-90/900 - Optical Tube Assembly

Bresser Refractor MESSIER AR-90/900 - Optical Tube Assembly

A high-quality telescope for night and solar observation

Excellent for entering into the hobby of astronomy: 90 mm aperture delivers 200 times more light than the naked eye! Observe craters, valleys and rims on the moon from nearly 400,000 km away just as you would look out of the window of a spaceship!

The MESSIER AR-90 does not only provide highly detailed views of the moon: Gaze at the division of the rings of saturn millions of kilometers away or explore the Great Red Spot of Jupiter, a giant tornado in Jupiter´s atmosphere. Watch the seasons on Mars and find the crescent of Venus.

With the included aperture solar filter, you can even observe our "home star": The telescope´s design, with its low chromatic aberration, provides fascinating views of sunspots and solar faculae. However, its refracting telescope design also allows for the use of a Herschel wedge, which offers more contrast.

The MESSIER AR-90 gives you images that are many times brighter than the instrument Galileo Galilei was using for his famous explorations almost 400 years ago, which is why observing fainter objects is so enjoyable.


Practice-oriented equipment

A finder scope for locating objects, a star diagonal for a comfortable viewing position, and a good eyepiece for initial observations at 35x magnification ensure that, aside from the optional mount - which supports the telescope´s weight and reduces shaking - no other accessories are needed. You can find eyepieces for higher magnifications in the accessory recommendations.

The permanently attached dew shield reduces any fogging that may occur and prevents stray light from entering from the sides, which further enhances the image contrast.

The AR-90/900´s tube ring features a GP dovetail bar for attaching to an optional mount. Alt-azimuth mounts are more intuitive to use, but with equatorial mounts, you only need to move the telescope along one axis to compensate for the apparent motion of the stars caused by the Earth´s rotation.


Manual:

Teleskop-Service has collected a lot of helpful information on refractors and made it available as a PDF: refractors.pdf

- Telescope - optical tube
- Tube ring and dovetail bar
- 26 mm Super Plössl eyepiece (31.7 mm / 1.25")
- 31.7 mm (1.25") diagonal mirror
- Integrated 31.7 mm and T2 adapter
- Planisphere (rotatable star map)
- Aperture solar filter
- 6x30 optical finder scope with crosshairs eyepiece
- Smartphone adapter for celestial navigation
- Astronomy PC software Stellarium (via download)

Safety informations: PDF Download