Altair PLANETA 101mm APO Refractor Telescope

Altair PLANETA 101mm F11 APO Refractor Telescope: Big Visual Performance in a Surprisingly Portable Package
The Altair PLANETA 101mm APO is built for the visual astronomer who values contrast, clarity, and uncompromising colour correction. With premium S-FPL53 ED optics and an extended F11 focal ratio, it delivers ultra-sharp, high-power views of the Moon, planets, double stars, and more—with the bonus of being portable and binoviewer-ready.

Key Features for Visual Performance & Portability

• Premium Long Focal Length ED Optics

  • 101mm S-FPL53 ED Doublet APO lens with full multi-coatings

  • F11 focal ratio (1111mm) ensures extreme sharpness and high contrast

  • Collimatable lens cell with QC serial number, guaranteed factory alignment

• No Colour Aberrations—Perfect for Planetary and Lunar Observation

  • Complete freedom from chromatic aberration, in or out of focus

  • Long focal ratio reduces eyepiece aberrations for flatter fields

  • Exceptional contrast and image clarity across the entire field of view

• Comfortable, High-Power Viewing

  • Long depth of field makes focusing easy and forgiving

  • Works beautifully with high-quality eyepieces—even those with short eye relief

  • "Ultrawide" eyepieces perform with noticeably less edge distortion

• Binoviewer Ready—No Barlow Required

  • Removable 100mm rear tube section adds extra back-focus

  • Enables use of binoviewers and some Herschel wedges with ease

  • No tools needed for disassembly—ideal for travel or solar modding

• Modern 2.5" Dual-Speed Focuser

  • 10:1 micro-focus for fine tuning at high magnifications

  • Smooth, geared movement with tight tolerances and minimal flex

  • Rear 2" push-fit with compression ring + 1.25" adapter included

• Designed for Real-World Use

  • Lightweight at just 4.8kg including tube rings and dovetail

  • Retractable 212mm dew shield for compact storage

  • 250mm Vixen-style dovetail and CNC rings for secure mounting

  • Breaks down into two compact sections (80cm & 20cm) for easy transport

• Versatile for Deep Sky & Solar Too

  • Excellent for double stars and deep sky due to high contrast

  • Compatible with Herschel wedges, Daystar Quark, and solar modding setups

  • 150mm back-focus (250mm when binoviewer tube removed) offers configuration flexibility

• Included Accessories & Build Quality

  • Finder bracket, metal dust cap, compression rings, and dovetail bar included

  • Premium mechanical finish with Altair Astro QC and 2-year warranty

The Altair PLANETA 101mm F11 APO isn't just about power—it's about precision, comfort, and visual perfection in a surprisingly portable package. Whether you’re scanning lunar valleys, splitting doubles, or chasing solar detail, this scope delivers pure visual satisfaction.