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Olivier Sauzereau

Introduction to astronomy Unlock the secrets of the universe!

  • 106131
From €15.00

*Adult price for the "Coup d'œil" package (2 hours).
8.00 / child (6 to 12 years) "Coup d'œil".
50.00 / adult "Evening at the observatory" package.
18.00 / child "Evening at the observatory".
150.00 / adult "2-day, 2-night course".
55,00€ / child "2 days and 2 nights course".

A night to touch the stars with your eyes!

What if your next adventure was millions of light years away… from the Vendée? At La Chapelle-aux-Lys (Terval), a town with the 4-star Village étoilé label, push open the doors of theBêcheurs d’étoiles observatory and let yourself be guided by Olivier Sauzereau, an astronomy enthusiast.

Here, every star tells a story, every constellation an enigma to be solved. With sky-watching, fascinating stories and moments suspended beneath the celestial vault, get ready for a rare, almost unreal experience.

About your adventure…

Rendezvous at the Bêcheurs d'étoiles observatory in La Chapelle-aux-Lys

Observatoire des Bêcheurs d’étoiles, La Grande Voye 85120 La Chapelle-aux-Lys (Terval).

Open all year round

3 options are available:

  • Coup d’œil (2h): a flexible, spontaneous schedule. Bookings can even be made on the day itself (subject to availability and weather conditions).
  • Discovery evening (late afternoon to late night), next dates :
    • July 2026: Saturday 11, Sunday 12, Tuesday 14, Thursday 16, Monday 20, Wednesday 22.
    • August 2026: Sunday 2, Monday 3, Wednesday 19.
    • Other dates will be proposed.
  • Training course (2 days, 2 nights): 17 to 19 July 2026.
Accessible to all aged 6 and over
Reservation required

Either by e-mail or by telephone 06 78 32 77 67.

Free parking at the observatory

3 heroic reasons to get started!

Let Olivier take you on board

Olivier Sauzereau brings astronomy to life. His passion is contagious, his knowledge immense, and his pleasure in passing on turns every moment into a discovery.

Change scale, literally

In just a few hours, you’ll go from the Earth to the galaxies. It’s a cosmic slap in the face.

Experience a night out of time

When everyone else is asleep, you can explore the universe. And that’s something.

Your adventure in detail

A hidden observatory in the heart of the hills

Your mission begins in a discreet, almost secret location. An old Vendée farmhouse, transformed over the years into a veritable astronomical observatory. There are no crowds or extraneous light here. Just silence, nature… and a sky of a purity rarely seen, worthy of a veritable Land of Stars.

You enter a space designed with passion, where every detail has been thought out to observe, understand and feel. You soon realise that you’re not here simply to look at the stars. You’ve come to learn how to read them.

A guide that really takes you on board

Olivier Sauzereau doesn’t just explain. He tells, he shares, he takes you on a journey. For over 30 years, he has been sharing his passion with infectious energy.

With him at your side, astronomy becomes accessible, alive, almost intimate. He adapts his talk to your level, answers your questions, and opens the doors to a universe often considered complex… but here surprisingly easy to grasp.

Between science, history and philosophy, each moment takes on a different dimension.

From the Sun to the galaxies: a complete journey

Depending on the package you choose, your adventure will last a few hours… or several days.

You often start by observing the Sun, its spots and eruptions, using specialised equipment. Then come the projections, the stories and the constellations.

When night falls, the real show begins. The telescope comes on stage. Planets, star clusters, nebulae… the universe is gradually revealed. And even if the sky becomes overcast, the adventure continues: films, discussions, discovering the constellations in a different way. Here, every scenario has been anticipated.

Total immersion, between sky and nature

The experience doesn’t stop at observation. It’s also about the atmosphere.

A hot drink in the middle of the night. The silence punctuated by the sounds of nature. Time seems to stand still. And sometimes, for the more curious, a whole night observing the sky.

For courses, the experience goes even further: a walk along the Path to the Stars, a full-scale exploration of the solar system, even a session at the planetarium.

At the end of the course, one thing’s for sure: you’ll never look at the sky in the same way again.

Your guide, your ally

Without him, the magic won’t work!

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Olivier Sauzereau

Olivier - sky explorer
The astrophotograph that brings you closer to the stars

A passionate astrophotographer and member of the Astrolys association, Olivier Sauzereau travels the world to capture the beauty of the sky... before returning to share it here in La Chapelle-aux-Lys. Under the dome of the planetarium or from his observatory, he will take you on a sensitive and fascinating adventure. Sessions, courses, observation evenings... with him, every glance you take becomes an encounter with the infinite.

Your mission starts here

Observatoire des Bêcheurs d’étoiles, La Grande Voye 85120 La Chapelle-aux-Lys (Terval). Free parking on site.

Good advice from the Tourist Office!

Dress for a night out

Even in summer, the nights can be chilly.

Ditch the weather apps

Trust local experience. Surprises are common… and often good ones.

Sleep on site to extend the adventure

Between an Inuit tent and camping, the immersion becomes total.

Prepare your mission!
  • What does the "At a glance" package at the observatory include?

    For around 2 hours, you’ll discover the observatory alongside Olivier Sauzereau. Observation of the sky (weather permitting), initial explanations and a rapid immersion in the world of astronomy. It’s the ideal way to get your first taste of astronomy, even at the last minute.

  • What does the "Discovery Evening" include?

    You will arrive in the late afternoon to discover the observatory and its equipment. Sun observation, conditions permitting, followed by an aperitif dinner. In the evening: projections, discovery of the constellations and observation of the sky. The night can be extended as you wish, with hot drinks and gourmet snacks included.

  • What does the 2-day, 2-night course include?

    A complete immersion in astronomy: observations of the Sun and night sky, lectures and projections, discovery of the solar system and the universe.

    You can also set off on the Star Trail, a 6.5km walk, and enjoy a session at the planetarium (depending on the programme). The pace adapts to you… and the stars.

  • Do you need to know anything about astronomy?

    Not at all. The experience is designed for beginners.

  • What happens if the sky is overcast?

    Alternatives are planned: screenings, learning about the sky and exchanges. The experience is complete.

  • Can we sleep on site?

    Yes.

    • Inuit tent hire (one couple and two children): €25 per night per adult, €10 per child.
    • Camping on site with your own tent: free.
  • Are there catering facilities?

    Yes, depending on the package (aperitif, snacks, breakfast). Please ask Olivier for more details.

Other adventures await you…