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This page contains various versions of images taken by Alain Maury and processed by Georges Attard and him of comet Leonard in December 2021.
Unless mentioned otherwise, the images were taken with a Celestron RASA11" and a zwo 6200MM (monochrome) CMOS camera.
To give a bit more detail, we wanted not to saturate the nucleus of the comet, so we used very short exposures (5 seconds), leading in the more or less two hours of visibility of the comet to about 1000 images of 110 megabytes to be processed each following day. Using the prism software (which I use for everything astronomical) I wrote a script to preprocess, recenter, bin by 2, and make a window around the comet which processes the 1000 images in about 2 hours and a half on a I9 machine. Then Georges takes the images make some processing on them and creates the animation which are below.
While it doesn't show, we had to degrade the quality of the images and had to do median stacks of individual images in order to remove the tracks left by tons of f#@~~ ing artificial satellites
Images from December 27th :
2 megabyte gif animation :
5 megabyte animation :
Original size animation (57 Mb, be patient) can be found here
Images from December 28th
The original size animation (55 Mb) is here
Images from December 29th
10.5Mb animation, seems like the comet took a day off.
the original size animation (65Mb) is here
Images from December 30th
Link to the full size (61 Mb) movie is here
More images to come...