M 87
M 87 |
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Object data of M87 |
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| Object type: | galaxy (E1) | ||
| Size: | 8.7' x 6.6' | ||
| Magnitude: | 9.6 mag | ||
| Constellation: | Vir | ||
| Distance: | 50 Mio Ly | ||
| Notes: |
The giant elliptical galaxy Messier 87, also called Virgo A, is the dominant
galaxy in the closest big galaxy cluster to us, the famous Virgo Cluster of
galaxies. M87 is famous for two peculiar and perhaps unique features, a huge
globular cluster system (as can be seen in the above image), and a
spectacular jet which is better seen on short exposure photographs.
This magnificient galaxy is perhaps the one with most known globular clusters. While our Milky Way has the modest number of roughly 150 to 200 globulars, M87 possesses a remarkable system of several thousands of these objects. The giant jet, which is better visible in the cropped image, consists of ejected gaseous material from the core of the galaxy and extends thousands of light years. |
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Exposure data |
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| Date: | 2012-04-12 + 21 + 23 + 24 + 2012-05-10 + 17 + 24 + 25 + 26 + 27 | ||
| Location: | Nussbach / Austria (400m) | ||
| Telescope: | 12" Newtonian telescope (f=1120mm) | ||
| Camera: | ST2000XM with CFW8 and Baader Filters | ||
| Binning: | L 1x1 / RGB 1x1 | ||
| Mount: | WAM 650move | ||
| Exposure time: | L 33x12m / R 12x12m / G 12x12m / B 12x12m | ||
| Exposure time total: | 13h 48m | ||
| Notes: | bad transparency and moderate seeing (2.2"-3.0") | ||
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