Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing) (Miran Brezočnik)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5451 · NGC 5455 · NGC 5457 · NGC 5461 · NGC 5471

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Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

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Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

I captured the Pinwheel Galaxy (M101) last year, but I processed the colour image only now. I used a 12 cm (4.7") refracting telescope SW Esprit 120ED APO and a monochrome camera with Sony IMX571 sensor. The galaxy is displayed in its natural colours, albeit enhanced, allowing for better visibility of the subtle structure of this massive galaxy. The image also depicts a supernova eruption, which was the most significant event in this galaxy for astronomers last year.

The white-blue colour of the galactic spiral arms indicates the presence of young and hot stars. In the yellowish core, older stars predominate. Brownish-red areas reveal cooler and denser regions of the galaxy. In the pink-coloured areas, ionized hydrogen is present, emitting dark red light, but in combination with the blue light of the spiral arms, it gives the appearance of pink hues.

The Pinwheel Galaxy is in the Ursa Major constellation. It is visible even with binoculars and smaller telescopes. Unlike most other spiral galaxies, which usually have symmetric spiral arms, those of the Pinwheel are slightly distorted. Scientists believe that this shape is a result of gravitational influences from neighbouring galaxies. The Pinwheel is exceptionally large, with a diameter of approximately 170,000 light-years, and it contains as many as 1000 billion stars! It is in our cosmic neighbourhood, located 21 million light-years away. Scientists have extensively studied the Pinwheel Galaxy and some other galaxies, contributing to a deeper understanding of galactic evolution and the size of the observable universe.

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Astrometry.net job	9853165
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Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

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Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

Late June 2023 image of Pinwheel Galaxy (M101) with supernova SN 2023ixf (HaLRGB processing)

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