Prepare for the elongations of Venus in 2015: talk at RCE


Last week-end I gave a talk at the Rencontres du Ciel et de l’Espace (RCE) at Cité des sciences et de l’industrie in Paris, about Venus. The planet will be easily observable for northern amateurs in 2015, do not miss it!

In 2015, we will see two nice venusian elongations favouring northern observers, an evening one during spring, a morning one in summer and fall. Here is the talk that shortly describes:

  • How does the atmosphere of Venus work
  • What can be observed on Venus : in UV, IR, and on the night side
  • The observing methods, in visual and imagery
  • Techniques of imaging and processing
  • Different projects of observation!

Click on the image below to download the talk!


To be read on same topic

Observing Venus in near IR : our conference at the EPSC 2013


Different ways of using colors for imaging planets


The concept of color is often discussed among observers. The purpose of this article is not to debate about the concept of realism, but to describe and discuss the use of three ways to use color for planetary images : “true” colors, “false” colors, and colorized monochrome images…

The three […] Continue Reading…


The reference article about pro/am cooperation in planetary astronomy


Participating to scientific work when you’re an amateur observer, is that possible? Answer is yes! I have talked about it on several occasions on this blog, and here is a must-read on the topic if you’d like to get into that.

The adventure started two years ago during the “4th pro-am […] Continue Reading…


A possible new “high altitude cloud” observed


The most noticeable observation of Mars in the last 2012 season has been the imagery of what is generally interpretated as a cloud of very high altitude, because it was projecting well beyond the terminator into the night. Those phenomena look to happen regularly and many have been found […] Continue Reading…


Planetary mission at the Pic du Midi, 8-9th March 2014


On March 8/9th, I had the honor and pleasure to participate to a planetary mission at the 1-meter telescope of the Pic du Midi (T1M) lead by Marc Delcroix, President of the SAF planetary observations commission. Here is a summary!

The T1M of the Pic du Midi observatory is […] Continue Reading…


Observing Mars: some technical advices


After the article, “What can we see on Mars this year” let’s now review some technical advices.

Make images in true colors
The Martian details are quite unequals, between the sharp and contrasted surface details seen in red, and the faint, low-contrast clouds observed in blue light. As the most interesting […] Continue Reading…


What can we see on Mars this year?


Mars will be at opposition again on April 8th, 2014. Here are some phenomena you must look for!

Mars will be at opposition in one month and a half and is already finely observable since its apparent diameter has now passed 10″. It will reach a maximum of 15,2″ […] Continue Reading…


Interview: Yann Le Gall, planetary imaging with a large Dobsonian


Many instruments can be used to image planets. This week I’m portraying observer Yann Le Gall, who is making splendid images with large dobsonian on an equatorial platform !
Browse Yann’s homepage here!

Astrophotographie au dobson
Hello Yann! Can you tell us about you and your activity in astronomy?

I was born in […] Continue Reading…


Planetary ephemeris with WinJupos (II): the graphics


After the first part where we learned how to get started with WinJupos’ephemeris, here is the second part where we’re going to learn how to set the graphic simulation, which is one the best tools!

Choose your map
WinJupos is delivered with various map projections for every planets as well as […] Continue Reading…


Jupiter with “Mickey’s head”


Since a few weeks, a curious pattern of white spots is evolving in the southern hemisphere of Jupiter, with a clear look-alike of the Mickey’s head. I have been able to image it last 22nd January; what is it exactly?

The “Mickey’s head” is a pattern of three white spots […] Continue Reading…

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