Explore FirstLight 100mm f/14 Mak-Cassegrain Telescope with Twilight Nano Mount

A 100mm f/14 Maksutov-Cassegrain on the Twilight Nano alt-az mount — the most compact and portable telescope combo in the FirstLight lineup, packing 1400mm of focal length into an optical tube just 12.6 inches long and 4 pounds.

The Mak-Cass design folds the light path with mirrors behind a sealed meniscus corrector, delivering high-magnification planetary views from a tube you can toss in a daypack. The f/14 focal ratio produces sharp, high-contrast images of lunar craters, Saturn's rings, and Jupiter's cloud bands. The sealed tube never needs collimation and stays dust-free. Fully multi-coated optics maximize brightness.

The Twilight Nano mount's panhandle control makes tracking planets at high magnification smooth and intuitive. The stainless steel tripod adjusts from 25.5" to 45" and supports up to 15 lbs — plenty of headroom for this lightweight setup.

Key Features

• 100mm f/14 Maksutov-Cassegrain, fully multi-coated
• 1400mm focal length in a 12.6" tube — ultra-compact
• Sealed optics — no collimation, no dust
• Twilight Nano alt-az mount with panhandle control (15 lb capacity)
• 25mm Plossl eyepiece (56x), 1.25" 90° diagonal, red-dot finder
• Smartphone camera adapter included
• Optical tube weight: 4 lbs

Ideal For

• Planetary and lunar specialists — f/14 delivers the high contrast that planets demand
• Travelers and hikers — the most compact FirstLight telescope, fits in a small bag
• Apartment and balcony observers — small footprint, quiet operation, no alignment needed