|
|
Winter | Spring | Summer | Autumn |
| 1) CANES 2) HYDRA 3) CORVUS 4) LIBRA 5) CRATER 6) LEO MINOR |
Date & Time |
| ||||||||||||||||||||||||||
The Whirlpool Galaxy - M 51 - NGC 5194 Spiral Galaxy - Magn.9.0 - Dist 25.1 mill. l.y. |
The Sunflower Galaxy - M 63 NGC 5055 - Spiral Glaxy Magn. 9.3 - Dist 23.5 mill. l.y. Although 6 degrees south, it apparently forms a physical group with M51 and several smaller galaxies, the M51 group, which is about 24 million light years distant. | M 94 - NGC 4736 - Spiral Galaxy Magn. 8.9 - Dist. 14 mill. l.y. His bright circular disk is surrounded by a ring of active star-forming regions, traced by blue young star clusters in color images, which sharply separates it from a much less bright outer ring of an older yellowish stellar population. In the outskirts, this region however ends again in a ring with moderate star formation activity, so that M94 is one of the relatively rare galaxies in which two "waves" of stellar formation can be observed. |
M 3 - NGC 5272 - Globular Cluster Magn. 6.4 - Dist. 32.300 l.y. M3 is one of the most outstanding globular clusters, containing an estimated half million stars! It is extremely rich in variable stars: 212 variables have been found, 186 periods determined, more than in every other globular cluster in our Milky Way galaxy (and thus the most ever observed); at least 170 RR Lyrae variables were discovered. | M 106 - NGC 4258 - Spiral Galaxy Magn. 9.0 - Dist. 22.2 mill. l.y. In 1995, investigations with the Very Large Baseline Array radio telescope equipment gave evidence that M106 is possibly the home of a massive dark objects, which could be traced to the lowest distance from the center ever possible up to now: 36 million solar masses apparently reside within a volume of about 1/24 to 1/12 light year radius (27,000 to 54,000 AU). This was then the densest matter concentration ever detected. |
Date & Time |
Name | Magn. | Dist. (L.Y.) | Temp.°K | C. | Type | Greek | Const. |
Alphard | 1.98 | 110 | 4.440 | K3 | Alpha | Hya | |
Minchir | 4.44 | 93 | 4.680 | K1 | Sigma | Hya | |
Ukdah | 4.60 | 45 | 6.480 | F6 | Tau 1 | Hya |
M 83 - NGC 5236 - Spiral Galaxy
Magn. 8.2 - Dist. 22.5 millions l.y.
M 83 is magnificient in this image, has very well defined spiral arms and displays a very dynamic appearance, appealing by the red and blue knots tracing the arms. The red knots are apparently diffuse gaseous nebulae in which star formation is just taking place, and which are excited to shine by its very hot young stars. The blue regions represent young stellar populations which have formed shortly (i.e., some million or some dozens of million years ago). The dust lanes may be traced well into the central region to the nucleus which has only 20" diameter.
M 68 NGC 4590 Magn. 8.2 Dist. 31.300 l.y. | M 48 NGC 2548 Open Cluster Magn. 5.8 |
Date & Time |
|
Date & Time |
|
|
Name | Magn. | Dist. (L.Y.) | Temp.°K | C. | Type | Greek | Const. |
Alkes | 4.08 | 105 | 4.800 | K0 | Alpha | Crt |
Date & Time |
Name | Magn. | Dist. (L.Y.) | Temp.°K | C. | Type | Flamsteed | Const. |
Praecipua | 3.83 | 136 | 4.800 | K0 | 46 | LMi |
astro | taxo | sundial |
Please e-mail to Carlo Corti any suggestion and criticism |