SVBONY MK105 Maksutov-Cassegrain OTA (105mm f/13)

The SVBONY MK105 is a compact 105mm Maksutov-Cassegrain optical tube designed for high-contrast lunar and planetary viewing in a highly portable form. With a long 1365mm focal length and f/13 focal ratio, it’s well suited to detailed observing, double stars, and bright deep-sky targets where magnification and contrast matter most.

Why the MK105 optical design works so well

• Maksutov-Cassegrain meniscus corrector helps deliver sharp, high-contrast images in a short tube.
• Compact grab-and-go OTA: long focal length performance without a long telescope tube.
• Internal focusing keeps the exterior clean and simple, with fewer parts to snag in transport.
• Conical internal baffling helps reduce stray light for improved perceived contrast.

Durable build + easy mounting

• Sturdy metal construction designed for travel and regular handling.

• Vixen-style dovetail compatibility for easy attachment to most common mounts and saddles.
• Dual finder mounting bases (2x) allow two accessories (e.g., finder + red dot) with no drilling required.

Coatings & contrast

• Secondary mirror dielectric coatings (up to 99% reflectivity) to support bright, high-contrast views.
• Multi-coated optical surfaces to help maximise light throughput.

Note: Like most Maksutov designs, the MK105 typically holds alignment well. If performance ever seems off, a simple star test can confirm whether adjustment is needed.

Best for

• The Moon: crisp crater and rille detail at high magnification

• Planets: fine detail on Jupiter, Saturn and Mars (seeing conditions permitting)

• Double stars and bright clusters
• Bright deep-sky objects (galaxies/nebulae) where compactness and magnification are priorities

What’s included

• 1x MK105 Maksutov-Cassegrain OTA
• 1x Versatile dovetail mounting base
• 1x Vixen-style dovetail plate (160mm)

Specifications