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Category Archive for: ‘Variable stars’

Recently an image of M33 was posted on this site made by Michael van Doorn and myself. By searching for some papers on the internet I was able to find databases giving the coordinates of red and yellow hypergiants, post-red hypergiants (supernova progenitors), variable stars and globular clusters in M33. With pixinsight I overlaid these …

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A new nova was discovered in the constellation of Delphinus on August 14 18:00 UT. I was able to start imaging within 5 hours of the discovery and gather some nice brightness measurements. Here my latest estimations can be found: The nova is still brightening and now visible with the naked eye. Here is an …

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