Bresser Telescope AC 102/1000 Messier Hexafoc EXOS-1 (21508)

The AC 102/1000 refracting telescope is an excellent choice for observing the Moon and planets, thanks to its long focal length. Its 102mm obstruction-free aperture delivers sharp resolution without the diffraction caused by a secondary mirror, as found in Newtonian telescopes.

With its relatively large aperture, this telescope also allows you to observe bright nebulae and galaxies. Follow in the footsteps of Charles Messier (1730–1817) and explore all the objects in his famous catalogue of nebular objects. The generous focal ratio ensures very low color aberration, making your observations even more enjoyable.

Advantages at a Glance:

• Low color aberration

• Solid drawtube for stability

• Ideal for lunar and planetary observations

This telescope is now equipped with the improved Hexafoc focuser, which features a free aperture of 65mm. For astrophotography, it can be upgraded with a 1:10 reduction ratio fine focuser (available as an accessory), allowing for precise focus adjustments.

Bresser EXOS-1 Mount
The EXOS-1 mount is designed for smaller optics and can support up to 7 kg without vibration or instability. It provides a stable platform for precise observations and can be optionally upgraded with a motor for the RA-axis to enhance tracking capabilities.

Included with the Mount:

• Sturdy equatorial mount

• Counterweight included

• Robust steel tripod with three legs

Specifications

Optics:

• Type: Refractor

• Type of build: Achromat

• Aperture: 102 mm

• Focal length: 1000 mm

• Aperture ratio (f/): 9.8

• Resolving capacity: 1.13 arcseconds

• Limit magnitude: 11.8

• Light gathering capacity: 210x (compared to the naked eye)

• Maximum useful magnification: 204x

• Tube weight: 4.8 kg

• Tube construction: Full tube

Focuser:

• Type of build: Hexafoc focuser (2") with a free aperture of 65mm

Mount:

• Mounting type: Equatorial (EXOS-1 mount)

• GoTo control: No

Tripod:

• Type: Steel tripod

Included Accessories:

• Eyepiece (1.25"): SP 26 mm included

• Deviating optics: 1.25", 90° star diagonal included

• Finder scope: 6x30 finder scope included

• Eyepiece adaptor: Compatible with both 1.25" and 2" eyepieces

General Information:

• Series: Messier series by Bresser

Area of Application:

• Moon & Planets Observation: Yes

• Nebulae & Galaxies Observation: Yes

• Nature Observation: Yes

• Astrophotography: Yes

Recommended For:

• Beginners: Yes

• Advanced users: No

• Observatories: No