NGC869-884. The Double Cluster
Open clusters in Perseo
This double open cluster was catalogued in the year 130 BC by the greek astronomer Hipparcos. Both clusters, that are only a few hundreds light years apart, are located in Perseus and they are pretty young, some 3,2 million years.
Distance to Earth: 
7000 light years.
Visual magnitude:

Previous process of the image

Date and location 9-ago-2005. Caraquiz, Madrid
Telescope Megrez II 80ED, f=560mm. Autoguíde with Toucam and LX200GPS
Camera Artemis285. IDAS LPS Hutech filter, with IR cut
Image processing
L: 10x60s; RGB: 3x60s. Images stacked  with AIP4WIN. Histogram, RGB composition and noise reduction with PixInsight. LRGB  with Adobe Photoshop.

Visits since september 14th, 2004: