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M13 Grande enxame do hercules.jpeg

Happening in the sky in
May '25

Session Schedule
9:30 pm in English
10:00 PM and 11:30 PM in Portuguese

  • August 9th - Full Moon

  • 12 to 13 of August - Peak of the Perseid Meteor Shower  

  • August 23 - New Moon - second session in the days around is the best period to observe the Milky Way.

  • The Milky Way is clearly visible during both sessions.
    For good observation, days without a Moon in the sky are recommended (between the waning and waxing quarters, preferably as close to the New Moon as possible).

  • Given the high turnout we have this month, every year we invite young researchers from various fields of astrophysics to assist with the sessions and encourage public engagement with various areas of astrophysics and cosmology research.

  • Saturn begins to appear in the sky at the end of the second session, reaching reasonable visibility conditions towards the end of the month.

  • The months of July and August mark the period of the year in which we have the greatest variety of objects to observe in the sky, namely colorful stars like Albireo, star-forming nebulae like the Swan and Lagoon nebulae, open star clusters like Messier 11 and NGC 457, globular star clusters like Messier 4 and, most importantly, the famous and spectacular Great Hercules Cluster!!

  • Our nearest neighboring galaxy, the Andromeda Galaxy, begins to be observed near the end of the month during the second night session.

Contact

  • Whatsapp

Please contact us if you require further information.

plataforma de observação astronomica

50,000 people

have you seen the stars

with us

Courela da Coutada, CM 1127
7200 -175 Monsaraz
Alentejo – Portugal

​Email: geral@olagoalqueva.pt
Telefone: [+351] 960 361 906

silhueta OLA

©2024 Alqueva Lake Observatory - OLA

Cancellations with refund will only be accepted 48 hours in advance, except in cases of force majeure.
We are subject to weather conditions; if the weather does not allow the astronomical session, the session will be replaced by the real-time navigation session.

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