| Date 2016/02/18 Observation place Yatch Haven Park & Marina, Fort Lauderdale, Florida |
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 | RGsB Vs for synthetic green |
| Exhibition | 0,018 seconds, average 55 fps |
| Number of images | Selection of 300 photos out of 1 for each of the red and blue images |
| Image acquisition software | RegiStax |
| Treatment | Castrator, RegiStax (wavelets) and Photoshop |
| Specific treatment | Create a synthetic green layer |
Object description
| Object type | Planet |
| Visual magnitude | -2,5 |
| Diameter | 142 796 km |
| Dimension seen from Earth | 43,8 arc seconds |
| Distance Mars - Earth when shooting | 4,493875 AU (672,27 million km) |
| Currently, Jupiter is in opposition to the earth which means that it is closest to the earth. Jupiter is a giant gas planet. It is the largest planet in the solar system, larger and more massive than all the other planets combined, and the fifth planet by its distance from the Sun (after Mercury, Venus, Earth and Mars). Taking into account the average atmospheric agitation (3/5), we can appreciate a good resolution of the planet. Considering the transparency of the sky which is 5/5, the contrasts of the planet are very good. The challenge here is to photograph the planet before it rotates, to preserve detail, its full rotation being only 9,83 hours. While performing the calculations, I had to take the images in a maximum time of 76 seconds (1,3 minutes). As my camera is monochrome, you have to take 3 images (red, green and blue) to reconstruct the colors of the planet. Which adds to the challenge. To save time, I produced a synthetic green image using the composite red and blue images. So I took 1 images for each of the red and blue colors in addition to manually turning the filter wheel! By selecting the best 500 images of each of the red and blue colors, it allowed me to have a final image with little turbulence, contributing to fine detail. |
| Richard Beauregard Sky Astro - CCD My impression "We cannot be alone in this gigantic universe" |