Almost lost amongst the stars of the rich Milky Way is the compact open cluster NGC 3228.
It is a cluster of Trumpler type I1p or II3p, with few members. The brightest stars are all blue "A main sequence" stars and the hottest star is a red giant of spectral type B9. The galactic cluster has a diameter of approx. 5 arcminutes and an apparent brightness of 6.0 mag and is located at a distance of 1770 LY.
It is a cluster of Trumpler type I1p or II3p, with few members. The brightest stars are all blue "A main sequence" stars and the hottest star is a red giant of spectral type B9. The galactic cluster has a diameter of approx. 5 arcminutes and an apparent brightness of 6.0 mag and is located at a distance of 1770 LY.
IAS - Internationale Amateuersternwarte e.V. - Hakos Observatory, Namibia |
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| Mount |
10Micron GM3000 HPS | Links | WEBDA |
| Telescope | IAS 10" Newton f/4.5 | ||
| Camera | QHY268M65 |
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| Filter | Chroma LRGB | ||
| Exposure | R/G/B each 74 x 60s |
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| Total |
3h 42min |
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| Software |
PixInsight |
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| Date |
May 2024 | |
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| Location |
IAS Hakos Remote Observatory, Namibia | ||
| Note |
Image acquisition at full moon | |
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