Galaxy M96 in Leo (with SN 2024gda) (Jean-Pierre Lees)

Celestial hemisphere: Northern · Constellation: Leo (Leo) · Contains: M 96 · NGC 3368

Galaxy M96 in Leo (with SN 2024gda)

This galaxy has an angular dimension of 7'x5' and is located at a distance of 26 Mly. It was discovered by the French astronomer Pierre Mechain on march 24, 1781.
The data taking is not a high quality one because the moon was quite present, the seeing was poor (3.4") and moreover I had a strange problem with the flats: it seems that when the telecope swaped from the west to the east position, all the dust pictures moved by about 30 pixels along the x axis and 10 pixels along the y axis, an effect which I never observed before. I took me quite a while to discover that but by shifting the flat accordingly I could recover most of the defaults.

Thanks to Pascal Le Clech for pointing out that this image includes supernova SN 2024gda (officially discovered April 9)

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Title: annotated version

Description: added the position of SN 2024gda

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Title: cropped image on SN 2024gda zone and comparison to 2016 data

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Astrometry.net job	9696028
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Galaxy M96 in Leo (with SN 2024gda)

Galaxy M96 in Leo (with SN 2024gda)

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Galaxy M96 in Leo (with SN 2024gda)

Galaxy M96 in Leo (with SN 2024gda)

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