Collinder 399 wide field
Exposure time total:
Canon EF70-200 mm f/4 @ 70mm
iOptron Sky Tracker
87x1 min ISO 1600
Canon EOS 500D
Image acquisition by CEDIC team
(Markus Blauensteiner, Bernhard Hubl, Christoph Kaltseis, Michael Hanl)
Image processing by Markus Blauensteiner
Collinder 399 is also called “Coathanger cluster”.
Under a dark sky, Collinder 399 can be seen with the naked eye
as an unresolved patch of light.