Bresser Messier AR-102 102/600 OTA Optical Tube with HEX Drawtube

The Messier AR-102 optical tube is a top-tier achromat refractor designed for both visual observations and astrophotography. With its high-quality optics and impressive features, it delivers exceptional performance. The telescope features a bright and well-corrected achromatic lens with a diameter of 102mm and a focal length of 600mm. When used for observing planets and the Moon, it provides excellent clarity, revealing intricate details on the surfaces of celestial objects within our solar system. In addition, under dark skies, it allows for the observation of hundreds of nebulae from the Messier and NGC catalogs, making it a great choice for deep space exploration. The optical surfaces are coated with anti-reflective layers (MC) to minimize unwanted reflections and maximize light transmission.

One notable enhancement is the inclusion of a new 2.5" Hexfoc eyepiece holder. Its innovative hexagonal profile design ensures exceptional rigidity, surpassing other models in its price range. This allows for precise focusing and operation even when using heavier equipment and accessories, preventing deflection and maintaining axial alignment. Furthermore, the generous diameter of the eyepiece holder minimizes vignetting, ensuring a seamless viewing experience.

The optical tube can be easily mounted on various mounts, including those with a stiffness class of EQ-3-2/EXOS-1 or higher, thanks to the standard dovetail switch.

Key Features:

Optical System:

• Optimal efficiency and durability of the optics
• Tube's durable construction and timeless appearance

Optical System Mounting:

• Metal fixing rings for secure attachment of the tube
• Dovetail with stainless steel rail for added stability and durability
• Convenient handles for easy transportation
• Piggyback photo adapter for attaching a camera

Eyepiece Holder:

• 2.5"/2" pull-out design with a hexagonal sleeve clamping ring
• 2" to 1.25" reduction with clamping ring and M42x0.75 (T2) thread
• Millimeter scale for precise focusing
• High-precision focus knob

Included Equipment:

• SPL 26mm/1.25" eyepiece
• 6x30mm finder with a crosshair
• 90° 1.25" diagonal mirror
• Two extensions for the eyepiece holder (38mm and 25mm)

Technical Specifications:

• Optical System: 2-element achromat refractor
• Lens Diameter: 102mm
• Focal Length: 600mm
• Focal Ratio: f/5.9
• Resolution: 1.16 arc seconds
• Theoretical Limiting Magnitude: 12.0mag
• Maximum Useful Magnification: 200x
• Tube Length (with rings inserted): 70cm
• Tube Length (after removing the dew shield): 58cm
• Dovetail Clamp Weight: 1.055kg
• Tube Weight (with dew shield and 2"/1.25" adapter): 2.9kg
• Total Kit Weight: 5kg

Warranty:

The Messier AR-102 optical tube comes with a comprehensive 2-year warranty, providing peace of mind and support for your astronomical endeavors.