Collinder 399
From CityDeepSky
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|ob_bintype=10x50 | |ob_bintype=10x50 | ||
|ob_teltype=[[MAK127]] | |ob_teltype=[[MAK127]] | ||
| − | |ob_description=This asterism, which looks like an upside down coathanger, was long thought to be a cluster. Recent data from the Hipparcos satellite seems to indicate that this group of stars is not a cluster, but simply an asterism. Either way it's a cool looking object in binoculars. A telescope doesn't show the whole extent of the asterism. | + | |ob_description=This asterism, which looks like an upside down coathanger, was long thought to be a cluster. Recent data from the Hipparcos satellite seems to indicate that this group of stars is not a cluster, but simply an asterism<ref name="Baumgardt1998">Baumgardt, H, ''The nature of some doubtful open clusters as revealed by Hipparcos'', <u>Astronomy & Astrophysics</U>, 1998, No. 340, pp 402–414 </ref>. Either way it's a cool looking object in binoculars. A telescope doesn't show the whole extent of the asterism. |
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[[category:Asterism]] [[Category:Summer Objects]] [[Category:Binocular Objects]] [[Category:Telescope Objects]] | [[category:Asterism]] [[Category:Summer Objects]] [[Category:Binocular Objects]] [[Category:Telescope Objects]] | ||
Latest revision as of 15:07, 16 November 2009
| Collinder 399 |
| Object #11 |
| Object type |
| Other Names Brocchi's Cluster, Al Sufi Cluster, The Coathanger |
| Data |
| Magnitude:5.2 Right ascension:19:25:24.00 |
| Visibility |
|
Binocular |
This asterism, which looks like an upside down coathanger, was long thought to be a cluster. Recent data from the Hipparcos satellite seems to indicate that this group of stars is not a cluster, but simply an asterism[1]. Either way it's a cool looking object in binoculars. A telescope doesn't show the whole extent of the asterism.
[edit] Locate Collinder 399
Click on map for larger image.
[edit] Observations
| Observer: Jason Nishiyama | Location:Calgary | Date of observation:18 May 2008 | Observations made:NBT |
| Visibility: BT | Binocular type:10x50 | Telescope type:MAK127 |
- ↑ Baumgardt, H, The nature of some doubtful open clusters as revealed by Hipparcos, Astronomy & Astrophysics, 1998, No. 340, pp 402–414
