Supernova?

Interesting things
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Welcome :slight_smile: If you click on the map at the location of the supernova?, in the pop-up menu there is a link for the “Single Exposures”. The color images are formed by adding together several images taken in each of three-four bands (g, r, sometimes i, and z). The Single Exposures link will show you each of these individual images (sort first by band, then by time). So for a supernova, you would expect to see it appear and disappear within weeks-months. We often have images spanning several years.

cheers,

dustin

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This is not a supernova but a foreground star from our own galaxy.

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Right, under the “Imaging catalogs” menu, if you turn on the “Gaia EDR3” layer, you’ll see Gaia’s measurements of the galaxy and that dot – it turns out that Gaia can detect the dot moving slightly – the popup has pmRA Dec values much larger than their ± errors. So the dot is moving, so it must be a Milky Way star.

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