Bresser Telescope AC 90/500 Messier Nano AZ (64990)

The Messier line of telescopes by Bresser offers excellent performance at an affordable price, making them ideal for ambitious beginners. These telescopes are designed to be expandable and retrofittable, allowing users to continue using them as their skills and interests grow.

The achromatic refractor AC 90/500 features a large 90mm aperture, providing strong light-gathering capabilities. Its 500mm focal length delivers a wide field of view, making it perfect for observing open star clusters and the Milky Way. These qualities make the telescope appealing to both beginners and experienced observers. However, for those who primarily wish to observe the Moon and planets, a telescope with a longer focal length—such as the AC 90/900—would be more suitable.

The telescope comes with a comprehensive set of accessories, allowing you to begin sky observation immediately after unpacking. For terrestrial observation, adding an Amici prism is recommended.

The Nano AZ Mount
This single-arm mount is quick to set up and easy to operate, functioning similarly to a photo tripod. It supports telescopes weighing up to 3.5 kg and is compatible with all telescopes featuring Vixen-standard prism rails. The mount is paired with a sturdy stainless-steel tripod, offering excellent stability during observations.

Specifications

Optics:

• Type: Refractor

• Type of build: Achromat

• Aperture: 90 mm

• Focal length: 500 mm

• Aperture ratio (f/): 5.6

• Resolving capacity: 1.53 arcseconds

• Limit magnitude: 11.6

• Light gathering capacity: 170x (compared to the naked eye)

• Maximum useful magnification: 180x

• Coating: Multi-coated

• Tube material: Metal

• Tube construction: Full tube

• Tube weight: 1.9 kg

• Tube diameter: 105 mm

• Tube length: 480 mm

Focuser:

• Connection to eyepiece: 1.25"

• Camera-side threaded socket connection: T2

• Gear reduction: None

• Type of build: Gear rack

Mount:

• Type of build: Nano AZ mount

• Mounting type: Azimuthal

• Load capacity: 4 kg

• GoTo control: No

Tripod:

• Type: Tripod with accessory plate included

• Material: Steel

Included Accessories:

• Eyepiece (1.25"): 26 mm

• Prism rail: Vixen-style

• Finder scope: 6x30 finder scope included

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

• Tube clamps included

• Dew shield included

General Information:

• Series: Messier series by Bresser

• Total weight (including mount and tripod): 5.3 kg

Area of Application:

• Astrophotography: No

• Moon & Planets Observation: Yes

• Nature Observation: No

• Nebulae & Galaxies Observation: Yes

• Sun Observation: No (only with an appropriate solar filter)

Recommended For:

• Beginners: Yes

• Advanced users: No

• Observatories: No