Christophe Pellier

Hi everyone ! I have created this new blog to share more easily my comments about the world of planetary astronomy. Even if I'm already an experienced observer, there are always things to learn and products or techniques to test and I hope to share this here. I will also post informations about the events I'm attending regularly and other stuff. Planetary astronomy today is becoming again a dynamical domain of observation so let's improve and share our passion !

Posts by Christophe Pellier

Second mission at the 1 meter telescope of the Pic du Midi

From August 6th to 9th, 2016, I went back to the Pic du Midi Observatory for a second planetary mission with the 1 meter telescope. It has been a great success especially with Neptune storms imaging!
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The atmospheric dispersion corrector with the ASI224MC

After the IR-cut article of last time, here is another unavoidable accessory with this color cam (…and every other!): the atmospheric dispersion corrector, or ADC.
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Why you should use an IR-cut filter with the ASI224MC

After dealing with the sampling of the ASI224MC, here is a second article that talks about an essential accessory: the IR-cut filter.

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Planetary Astronomy, the book: first announcement!

Have you ever wondered if there was a complete and recent book for observing and imaging planets? … Now there will be one! More >

The JUNO workshop in Nice, May 12th-13th 2016

Getting ready for the arrival of the JUNO spacecraft in orbit around Jupiter, a workshop was held this month in Nice, France, around scientists and amateurs from various countries in the world. High quality informations now available for everyone!

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The sampling of the ASI224MC camera

I’m beginning a serie of articles dedicated to this little imaging bomb that is the ASI224MC camera from ZWO. It’s quite different from the PLA-Mx that I have been using this past years, first because of its pixel size… Let’s take things by the beginning: the setting of the sampling!
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JUNO needs amateurs!

In 2016, a major event in the Solar system exploration is going to take place: the arrival of a new space proble around Jupiter : JUNO. This should take place during the summer of 2016 and it will be the first since the Galileo orbiter (1996-2003). Scientists ask amateurs for their contribution to the study… More >

Meteorological conditions at AstroQueyras (3): the onset of good conditions

After the mediocre to fair nights described in (1) and (2), here are my observations during the next two following nights (August 31th to September 1st and 1st to 2nd). Those two nights have been somewhat cloudy, but with a much better seeing. Meteorological conditions had changed too ! More >

Meteorological conditions at AstroQueyras (2): a strange wind at night

After a general review of the AstroQueyras observatory context, here are some of my notes related to the observed weather and night sky quality during my stay. On the first two nights (August 29/30 and 30/31) the  sky was clear but seeing was quite mediocre. I have note a particular phenomenon that I hardly explain: a persistent south-east wind.
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Meteorological conditions at AstroQueyras (1): the context

AstroQueyras is an observatory located at an altitude of 2930 meters in the deep french Alpes mountains, very close to the italian border. It welcomes one-week amateur missions as well as one-night public stays. It’s equiped with a 620 mm F/15 Cassegrain, a 500 mm F/8 Ritchey-Chrétien and a 200 mm flat-field in three cupolas.

I’m currently participating to a one-week mission with Olympus Mons club from Mons in Belgium, and as I like to pay attention to the meteorological conditions when observing, this is a dreamt occasion for a lowland imager to observe the behavior of high mountains conditions!


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