The calibration processing of the data corresponds to deep sky imaging. The exposure time of each image must be short enough that the movement of the comet is not visible, which depends on the speed of the comet and finally on the focal length. ![]() This was fine, because that´s where the disconnection happened.įor imaging, I use a 12" f 3.6 ASA astrograph and an ASI ZWO 6200 MM Pro camera with filter wheel and LRGB filters housed in an observatory. ![]() As I recognized that the tail looked dramatic in the image of the first field, I decided to extend the image with an additional field. I was very lucky that the weather in Namibia was still excellent after I opened the roof of the observatory. A piece of Comet Leonard´s tail was pinched off and carried away by the solar wind. On Decema dramatic tail disconnection event happened. Photographing the comet and processing the image Then, the most important thing is to stay tuned every clear night so I don't miss an appearance in the tail. ![]() Based on my many years of experience, I can assess whether the comet will be impressive. I use a planetarium program where I can see all comets that are actually visible. Disconnection Event by Gerald Rhemann - Astronomy Photographer of the Year 2022 Winner Preparing to photograph a comet
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