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Category Archive for: ‘Deepsky’

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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Recently I have teamed up with Michael van Doorn to make some imagery of M33. Michael uses a Celestron C11 with Hyperstar at f/2. This setup has a focal length of about 560mm and so does give a wide field with a high sensitivity. We decided to combine the RGB and Ha from the Hyperstar …

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“The bright star cluster [known as an “open cluster”] is known as Melotte15 after its discover, Philibert Jacques Melotte (1880-1961). Melotte 15 is embedded within and illuminates the central portion of the much larger glowing nebula identified as IC 1805. The three bright stars in an arc at the center of this image are type …

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NGC 7331 (in the lower left of the image) is a galaxy similar to our own galaxy in the constellation Pegasus at a distance of about 50 million lightyears. It was discovered in 1784 by William Herschel. Below NGC 7331 a few other galaxies can be seen that are part of the so called Deer …

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