Sharpstar Cassegrain SCA260 F5 Aspheric Aspherical Astrograph Telescope

The telescope is coated with durable carbon composite material, which improves its appearance while significantly reducing its weight.

The primary and secondary mirrors have improved aluminum coatings, ensuring high reflectivity in excess of 95%. The new dovetail of the secondary mirror allows horizontal mirror adjustment. The dedicated 3" focuser has an outstanding load capacity and can be smoothly adjusted.

The delicately drilled handle is made entirely of CNC aluminum, which can be used to attach other accessories. The new telescope handle design can meet the demands of amateurs from both aesthetic and mechanical point of view.

3" corrector

A 3" corrector with a three-element structure is installed in the optical path, allowing the entire optical system to better correct field and vignetting.
The two-section focuser coupling design has M54 × 0.75 and M48 × 0.75 threads ready for most image capture devices.

Features

• Aperture: 260 mm
• Wide focal length: 1300 mm
• Focal ratio: f / 5
• Primary mirror type: aspherical
• Primary Mirror Material: PZ33 (similar to Pyrex glass)
• Secondary mirror: Spherical
• Secondary mirror diameter: 135 mm
• Secondary mirror holder diameter: 150 mm
• Reflectance: 95
• Corrector: three elements, air spaced
• Image circle: 80 mm
• Visual magnitude limit: 13.8 mg
• Tube material: carbon fiber
• Tube diameter: 304 mm
• Tube diameter, including front ring: 322 mm
• Tube length: 738 mm
• Tube weight: 14.5 kg
• Resolution: 0.46
• Focusing: 3.35" Rap Focagers - 50mm range of adjustment
• Focal plane distance of M48 thread: 70 mm
• Focal plane distance of M54 thread: 88 mm
• Focal plane distance of the M68 thread: 95 mm
• Focal plane distance of the M90 thread: 102 mm
• Dovetail: losmandy style
• Fans: 3 fans with display - by external 12 V power supply
• Power required for temperature display: 2 LR 44 batteries (not included): 75 mm (from the base of the M48 thread of the housing): 70 mm (from the base of the M48 thread of the housing)