Open Cluster NGC 7789
Open Cluster NGC 7789: This is one of the oldest Open Clusters of our galaxy. Its age is estaimated to be 1.6 billion years.This is probably due to the fact that it contains approx. 1000 stars, so the gravitational force could hold them together for such a long time.
Object |
Open Cluster NGC 7789 |
|---|---|
Catagory |
Open Clusters |
Designation |
NGC 7789 |
Constellation |
Cassiopeia |
Optics |
Vixen R200SS 8 inch f/4.6 with Televue SBIG Paracorr |
Camera |
SBIG STL 11000M with internal CFW 5 |
Exposure |
4x2 min (1x1 bin) each Astrodon True Balance RGB filterset, Maxim DL for image acquisition |
Calibration |
Dark + Flat Frame |
|---|---|
Guiding |
Meade DSI Pro II and TMB 80 as Guide Scope, Maxim DL as guiding software |
Mount |
Takahashi EM-11 |
Processing |
Maxim DL5, Photoshop. Color Code RGB |
Location, Date |
Eningen, Germany - 31 Aug 2009 |
Remark |
