2009-08-16, RGB
Image data
| Photographer: | Jürgen Stöger |
| Optics: | Takahashi FSQ106ED f/5 (main) Scopos ED66 (guide) |
| Mount: | Fornax 51 |
| Cameras: | QHY8Pro (main) Starlight SXV-M7 (guide) |
| Exposure: | 55 minutes |
| Conditions: | hazy sky |
| Moon: | below horizon |
| Location: | Katzelsdorf |
| Date: | 16 August 2009 |
| Remarks: | tilt of camera, image processing together with Stefan |
Cr 399 object information
Collinder 399, also known as Brocchi’s cluster and the Coathanger is a so-called asterism, a star pattern that is no open star cluster or a constellation. It is situated in constellation Vulpecula about 0,5° West of alpha Sge.
Collinder 399 contains up of ten 5th to 7th magnitude stars. It can be seen with the naked eye as a small diffuse patch, the “Coathanger” asterism is visible in binoculars or telescopes at low power.
The open star cluster NGC 6802 lies directly on the eastern side of Collinder 399. Trumpler classification of NGC 6802: III 1 m
RA: 19h25m24sDec: +20° 11′ 00″
Size: 60′