Stargazing in the Sahara: Merzouga Night Sky Guide

Merzouga is one of the best stargazing locations in Africa. The Erg Chebbi dunes sit at around 900 m elevation on the edge of the Hamada — a near-flat gravel plain — with virtually no artificial light pollution for 100+ km in every direction. On a moonless night, the Milky Way is bright enough to cast a faint shadow. The Bortle scale rating for this area sits around 2–3, comparable to a high-altitude observatory site in Europe. It is genuinely dark in a way that is impossible to replicate near any city.

November through February is the astronomers' consensus pick: maximum hours of darkness (nights exceed 12 hours), near-zero humidity, and the kind of cold-air transparency that makes stars look almost three-dimensional. October and March are strong runners-up, with milder temperatures and the Milky Way core reappearing above the eastern horizon in the pre-dawn hours. Summer visibility is perfectly decent — the core is high and bright — but you will wait until past 9 p.m. for full dark and the nights stay warm, which is no hardship for most travellers.

Yes, easily and without any optical aid, on any clear moonless night. The galactic core (the brightest, most structured section of the Milky Way band) is visible from Merzouga between roughly March and October, rising in the south-east after midnight in March and dominating the sky by June and July. From November to February the core sits below the horizon but the rest of the galaxy is still strikingly bright, and you can pick out the Andromeda Galaxy, the Magellanic Clouds are visible on very clear winter nights from this latitude (about 31° N), and the star-dense Milky Way arm still arches overhead.

Most camps — from standard bivouacs to luxury glamping tents — include an informal stargazing session as part of the evening experience. The guide will name constellations and point out planets visible that night; some premium camps bring a basic telescope. Dedicated astronomy programmes with a licensed astronomers and motorised tracking mounts are rare but exist at a handful of high-end camps near Merzouga and Zagora. If astronomy is the primary reason for your trip, mention it when booking your private tour so the guide can match you to a camp with the right equipment and schedule your arrival around the new moon.

For naked-eye observing you need nothing beyond a red-light torch, warm clothing (even in summer, a fleece for 2–3 a.m. is wise), and patience. For binocular observing, any 8×42 or 10×50 instrument will reveal dozens of star clusters, double stars, and the Andromeda Galaxy. For astrophotography, a wide-angle lens (14–24 mm) at f/2.8 or faster, a sturdy tripod, and a camera that shoots above ISO 3200 cleanly is the standard setup. Pack everything in a sand-proof bag and wipe down lenses every night — Saharan sand is fine as talc and gets into everything.

Check lunar calendars before booking and aim for three to four nights centred on the new moon. Many astronomers target the two nights before and three nights after new moon as the optimal window — the crescent sets early and the sky is dark by 9–10 p.m. Free apps like Moon Phase Calendar or Stellarium show moon-rise and moon-set times for any location months in advance. If the new moon falls mid-week and your schedule is fixed, a crescent phase still gives you five or six hours of truly dark sky from midnight onwards.

Both are excellent, but the dunes themselves add something a camp cannot: a natural dark foreground that looks extraordinary in photographs and removes even the faint glow of camp lanterns. Ask your guide to walk you 15–20 minutes into the dunes after dinner and turn off all torches. The silence is absolute, the sand retains heat from the day, and the horizon is perfectly flat in every direction — 360 degrees of unbroken sky. The climb back to camp in darkness is part of the experience; a red-light torch and a guide who knows the terrain make it completely safe.