The telescope Skywatcher BKMAK 90 SP OTA is a compact and high-quality Maksutov-Cassegrain telescope with a 90mm aperture, designed for detailed astronomical observations. With an optical opening diameter of 90 mm and a focal length of 1250 mm, it offers an impressive focal ratio of approximately f/13.8 to f/14, making it ideal for high-contrast views of planetary details and the Moon.

The design of this telescope ensures minimal chromatic aberration thanks to its Maksutov-Cassegrain structure and high-transmission coatings on the correcting lens. This enhances light transmission and image clarity.

• Optical Structure: Maksutov-Cassegrain
• Aperture Diameter: 90 mm
• Focal Length: 1250 mm
• Focal Ratio: Approximately f/14
• Magnification: Up to 180x
• Star Size Limit: Around 12.5
• Mirror Coatings: Aluminum-based coatings with ~94% reflectivity
• Corrector Coatings: High transmission metallic coatings (MHTC™)
• Optics: Typically includes 10mm and 25mm eyepieces
• Focuser Diameter: 1.25"

Additionally, the diagonal mirror provides comfortable viewing angles, and the telescope is lightweight, weighing approximately 1.3 to 1.6 kg. This model works well with EQ1 mount forks, enhancing usability. It is suitable for beginners and experienced astronomers, offering clear and high-contrast images of celestial wonders.