I am engineer and I live in the suburbs of Paris (close to Versailles), in a site that is very polluted by city lights. From my backyard, I can take images of the Sun, the Moon, planets and nebulas with narrowband filters. For deep sky imaging (galaxies, comets, nebulas...), I am obliged to go in the land, after loading my van. I began digital imaging (CCD) in 1994 and got my first consumer digital camera in 2001, for the total eclipse of June 21st.

The asteroid 19458 has been officially named Legault by the International Astronomical Union.

I have written three books:

- The New Atlas of the Moon with Serge Brunier (Firefly),

- Astrophotographie (Eyrolles), translated in English, German and Spanish,

- Les Secrets de l'Astrophotographie (Eyrolles).

I have written numerous articles and lectures about imaging in Europe and USA (Sky and Telescope, Ciel et Espace, Astronomie Magazine, Chasseur d'Images...).

My photographs, especially of space shuttle and space station, have been published in newspapers and magazines and have been shown on TV worldwide: The Times, The Guardian, The Daily Mail, The Wall Street Journal, Popular Science, Nature, Scientific American, CNN, Fox News, ABC News, CBS News, Discovery Channel, Science et Vie, le Monde, le Figaro, le Point, Ca m'Intéresse, TF1, France2, M6...

I have given lectures and photo exhibitions during: NEAF (North East Astronomy Forum, Suffern NY), RCE (Paris), Québec (Canada) and Ireland, AIP (Astro Image Processing) workshops, Festival de Photo de Nature de Montier-en-Der, Salon de la Photo (Paris) and amateurs meetings in France, Germany, Netherlands, Belgium, Greece and South Africa.

I have participated to several astronomical missions: crash of the comet Shoemaker-Levy 9 on Jupiter in July 1994 at the Pic-du-Midi observatory (with Christian Buil), total eclipses of 2001 (Angola), 2002 (Angola), 2006 (Egypt), 2008 (Russia) and 2009 (China) with Serge Koutchmy, New Horizons occultation mission for NASA in August2018 in Senegal.

In May 2009, I have been attending, from the press site of the Kennedy Space Center (KSC), to the launch of the space shuttle Atlantis for the STS-125 mission (the last Hubble servicing mission), and visiting the hall where were Discovery during its preparation for a future flight.

I have been in charge since more than 15 years of a workshop about Digital Imaging in the Festival d'Astronomie de Haute Maurienne.

I have been rewarded by SBIG in the company's Hall of Fame.

I have received the Marius Jacquemetton award (photographic works) from the Société Astronomique de France in 1999.

In 2003, I have won second prize ( Meade 8" LX90) in the Mars photo contest of Oceanside Photo and Telescope, a friendly team I had the pleasure to meet during one of my visits in California.

Instruments :



The optical tube I currently use for satellite images is a Celestron C14 Edge HD.

Some other optical tubes were  used in the past: Meade ACF 10", Meade 12" Schmidt-Cassegrain, Takahashi Schmidt-Cassegrain 225mm (9 ") telescope (F/D = 12), Takahashi Cassegrain Dall-Kirkham 250mm (10 "), Intes Maksutov-Cassegrain (Rumak type with separate secondary mirror) 250mm (10 ") and 180mm (7").

I use equatorial mounts Takahashi EM400, EM10 and Losmandy Titan.

I also use Takahashi refractors for deep-sky imaging, lunar quarters, solar imaging and transits:
- FSQ-106
- TOA-150 with large size corrector and Herschel wedge
The solar images have been taken with different refractors: Televue Pronto (70mm), FSQ-106, TOA-130 and TOA-150.

For white light solar imaging, I use a Baader helioscope. For H-alpha:
- a Coronado 90mm double stack with BF15 and binocular viewer
- a 0,5A Daystar filter with 180 mm pre-filter and Baader telecentric system


More recently, I got:

- a Celestron C11 EdgeHD transformed into a H-alpha solar telescope (Airylab HaT)
- a Celestron Rowe-Ackermann 11", for deep-sky imaging.