Imaging tips

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 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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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! More >

Observing Mars: some technical advices

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

Use a true green filter for your images

Among the different techniques of imaging that we saw over the years, there was the use of a “synthetic” green image. Here is why it is less interesting than a true green image. This technique is quite outdated now and has never been really widely used, but this is a good opportunity to take a closer look at how color rendition is working. More >

Image the surface of Venus this winter!

One of the most fascinating planetary observation that you can make is imaging the surface of Venus, a planet however completely covered by a permanent layer of bright clouds. Or to say it better, you can image the thermal signal of the surface… More >

How long is too long on Jupiter?

A recurring topic of discussion for planetary imaging is how long the videos can go on planets without losing contrast because of their rotation. Jupiter, that offers so much details but that spins so fast is of course the first concerned! So how long is “too long” on Jupiter? More >

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

Observing Venus is one of the most interesting planetary observations accessible to amateurs. The planet is mostly observed in violet and ultraviolet as these colors show the most contrasted details. However there is another fascinating wavelength that gives access to a different cloud layer and even to the surface of the planet : the near infrared. Here is the talk Giuseppe Monachino and I we have been presenting at the EPSC 2013 last month! More >