Chacaltaya Observatory at 5,240 m (17,190 ft).

Research observatory · Mount Chacaltaya, La Paz, Bolivia

Chacaltaya Observatory

Chacaltaya Observatory is a research observatory in Mount Chacaltaya, La Paz, Bolivia.

Chacaltaya Observatory in brief

Open to the public
Check before you go
Elevation
5,240 m (17,190 ft)
Bortle class
Not yet rated
Observes in
Cosmic ray

Official site

Can you visit Chacaltaya Observatory? Check before you go

Research site; visitors to the mountain can see the building from outside.

For telescope views near Chacaltaya Observatory, see the observatories open to the public and astronomy clubs nearby; clubs hold free public star parties.

What Chacaltaya Observatory observes: cosmic ray

The list does not describe the instruments at Chacaltaya Observatory yet; the official site has them.

How dark the sky is at Chacaltaya Observatory

Chacaltaya Observatory has no Bortle rating in the list yet. The scale below shows what each class looks like.

1 mag 8.0 21.99+ 2 mag 7.5 21.89+ 3 mag 7.0 21.69+ 4 mag 6.5 20.49+ 5 mag 6.0 19.50+ 6 mag 5.5 18.94+ 7 mag 5.0 18.38+ 8 mag 4.5 18.00+ 9 mag 4.0
The Bortle scale. Each panel shows the class number, the faintest star the naked eye reaches at the zenith, and the darkest-edge sky brightness reading of that class in mag/arcsec².

Sky brightness and class come from the World Atlas of Artificial Night Sky Brightness (Falchi et al. 2016, CC BY-NC 4.0), with natural skyglow added, at the coordinates below. Research telescopes are often sited on mountains above the haze, so the real sky can be darker than the map suggests.

Chacaltaya Observatory among the observatories of Bolivia

Montevideo National Observatory Jicamarca Radio Observatory National Astronomical Observatory of Colombia National Astronomical Observatory Quito Astronomical Observatory Chacaltaya Observatory Mount Chacaltaya, La Paz, Bolivia Chacaltaya Observatory Mount Chacaltaya, La Paz, Bolivia
Research or private observatory Observatory open to the public

Green dots are observatories open to the public, blue dots research or private sites, squares dark sky places; select one for its page. See Observatories in Bolivia for the full list.

The coordinates on this page point to Chacaltaya peak (Wikipedia); laboratory is just below the summit: 16.353°S, 68.131°W.

Map data © OpenStreetMap contributors. Open the larger map · Directions. Mountain observatory roads are often gated after dark; go only on a scheduled public night.

Dark sky places, observatories and clubs near Chacaltaya Observatory

No dark sky place, public observatory, club or star party on the list is near Chacaltaya Observatory.

Chacaltaya Observatory record

Every value in the observatories dataset for Chacaltaya Observatory
ID503
NameChacaltaya Observatory
CityMount Chacaltaya
StateLa Paz
CountryBolivia
ContinentSouth America
Webhttps://rayoscosmicos.umsa.bo/
Type1cosmic ray
Elevation5240
Lat-16.3533
Lon-68.13139
LatLonSpotChacaltaya peak (Wikipedia); laboratory is just below the summit
StatusActive
StatusNoteUMSA cosmic-ray laboratory, also a Global Atmosphere Watch station; hosts ALPACA and LAGO experiments
PublicNoteResearch site; visitors to the mountain can see the building from outside
Sourceshttps://en.wikipedia.org/wiki/Chacaltaya; https://rayoscosmicos.umsa.bo/

From the site's observatories dataset (observatoriesglobal_q426). Distances are computed from the coordinates.