| Date 2020/11/09 Observation place My permanent observatory in Longueuil in white light pollution zone |
Technical
| Telescope | Celestron EdgeHD 800 Schmidt-Cassegrain - Diameter 203mm (8 ''), focal length 2032mm, f / 10 |
| Barlow | 2X (f / 20) |
| Mount | Celestron CGEM |
| Imaging camera | ZWO UPS 120MM (monochrome) |
| Selected resolution | 640 480 pixels x |
| Image type | R (RVsB) Vs for synthetic green The red image was chosen as the luminance image |
| Exhibition | Red filter: 19,7 ms 43 images per second on average Blue filter: 45,39 ms 19 images per second on average |
| Number of images | Selection of the best 1 photos out of the 250 taken for each of the red and blue videos |
| Image acquisition software | FireCapture |
| Treatment | PIPP, AutoStakker, PixInsight and Photoshop |
| Specific treatment | Create a synthetic green layer |
Object description
| Object type | Planet |
| Visual magnitude | -1,9 |
| Diameter | 6 792 km |
| Dimension seen from Earth | 18,6 arc seconds |
| Distance Mars - Earth when shooting | 0,504376 AU (75,5 million km) |
| The planet Mars is the fourth planet in ascending order of distance from the Sun. Its distance from the Sun is between 206,6 to 249,2 million kilometers, with an orbital period of 669,58 Martian days (686,71 Earth days). It is a terrestrial planet (rock formations and not gas), as are Mercury, Venus and Earth. It is about ten times less massive than the Earth, but ten times more massive than the Moon. Its topography presents analogies as well with the Moon, through its craters and its impact basins, as with the Earth, with formations of tectonic and climatic origin such as volcanoes, rifts, valleys, fields. dunes and polar ice caps. The highest volcano in the Solar System, Olympus Mons (which is a shield volcano), and the largest canyon, Valles Marineris (which is visible in my image at the top), are found on Mars. It has a thin atmosphere which is mainly composed of carbon dioxide (CO2). NASA plans to send humans to Mars by 2030. These pioneers would lay the groundwork of a great Martian city which could accommodate up to a million people before the end of the XNUMXst century! Let's say that right now, it's a project! Currently, Mars is in opposition to Earth, which means it is closest to Earth. Its maximum opposition period (closest to Earth) was last October 13th, so close to my image which was taken on November 9th. The recommended period for photographing the planet is up to two months before or after its period of maximum opposition. The distance of Mars from Earth when the picture was taken was 75,5 million km. Its magnitude of -1,9 and its apparent diameter (as seen from Earth) was 18,6 '' of arc. To photograph the planet, you have to choose a night when the atmospheric agitation (turbulence) is good to very good, which was the case from midnight, the start of the shooting started at 00:38. By carrying out a collimation of my telescope just before the shot and taking advantage of good air turbulence (4/5), I succeeded in fetching very beautiful details of the planet's surface. This is my best image so far in March. |
| Richard Beauregard Sky Astro - CCD My impression "We cannot be alone in this gigantic universe" |