Why Erg Chigaga for an Astronomy Club Trip
European dark-sky parks have improved access to dark skies for club members. But structurally, the best certified sites in France, the UK, and Germany sit at Bortle Class 3 to 4. Artificial sky glow from the continent means true Bortle 1 conditions no longer exist in Europe.
The Erg Chigaga sand sea in southeastern Morocco is one of the few Bortle Class 1 sites accessible without an expedition to polar or high-altitude regions. The measured Sky Quality Meter reading on site is SQM 22.0 mag/arcsec². The camp records 312 clear nights per year. The nearest city exceeding 50,000 inhabitants is more than 300 km away.
For a club that has already explored the best national sites, this is a categorically different experience.
What Your Club Can Observe
Under a true Bortle 1 sky, the target list expands dramatically compared to any European dark-sky site.
Naked eye: The Milky Way shows distinct dust lanes and star-forming regions in visible colour. The Gegenschein is easily seen without optical aid. Zodiacal light projects as a broad, bright cone along the ecliptic after sunset and before sunrise. The Andromeda Galaxy appears as an oval 4° wide, with satellite galaxies M32 and M110 visible to attentive observers.
Binoculars: The Virgo Cluster resolves into dozens of individual galaxies. The entire Pleiades nebulosity becomes visible. The large Magellanic Stream becomes accessible from the southern fringe of the observable sky.
Telescopes (club instruments, 10” to 16”):
- Globular clusters (M13, M22, Omega Centauri at useful altitude) resolve to the core
- Galaxy arms and dust lanes in face-on spirals like M101 and M33
- Faint planetary nebulae invisible from any European site
- Emission nebulae in Hα colour visible through OIII and Hα filters without a camera
Astrophotography: Median seeing of 1.2 arcseconds and relative humidity consistently below 15% at night. These are professional observatory conditions. Sub-2” FWHM stars are routine.
Logistics: How a Group Privatization Works
The camp can be privatized entirely for astronomy clubs. No other guests share the site.
The observation platform is a dedicated concrete pad of 80 m² with silent 12V and 220V power supply. Clubs bring their own mounts and instruments. Power is available at each setup position without generators or noise interference.
Included in a group privatization:
- Exclusive use of the full camp (8 suites)
- Dedicated observation platform with power
- Full board: Berber breakfast, tagine lunch, dinner under the stars
- Night tea and coffee service (typically used until 3 a.m.)
- Private 4x4 transfer from M’Hamid el Ghizlane (~80 km from the camp)
- Daily sky briefing and target list assistance
What members bring: Their own equatorial mounts (EQ5, HEQ5, EQ6-R, Paramount), telescopes, cameras, and laptops for guiding (PHD2) and capture (NINA, Prism, Sequence Generator Pro).
Group Size and Budget
The camp accommodates 2 to 20 people in a full privatization. Groups from 6 people can book a partial privatization (3 suites and the observation platform).
Pricing for groups is structured per person per night, all-inclusive (full board, transfers, platform access). The rate decreases as group size increases. For a club of 10 to 15 members on a 7-night stay, the on-site cost is comparable to a mid-range European star party with accommodation.
International flights to Marrakech from major European cities (Paris, Frankfurt, Amsterdam, Brussels, Zurich) run from approximately €100 to €200 return. No visa is required for EU, UK, Swiss, Canadian, or US passport holders. Personal optical equipment is not subject to Moroccan import duties.
When to Book
The camp operates from October to mid-June. New-moon windows fill earliest. For astronomy clubs, the recommended windows are:
- November to February: Longest nights, lowest humidity, stable seeing. Winter constellations at maximum altitude.
- March to May: Galactic core rises before midnight by May. Galaxy season at full depth.
Privatization slots open 8 to 10 months in advance. Clubs planning a trip for the following November should enquire by March.
Umnya Astro is a program of Umnya Desert Camp, a family-run Berber camp at Erg Chigaga since 2014. References from French, Belgian, and Swiss astronomy societies are available on request.