Constellation Corona Borealis
Date: 04.04.1996 ca. 02.30 CEST
Lens: f=50 mm f/1,7
Exposure time: 20 seconds
Film: Fujicolor 1600
This picture was taken during a lunar eclipse. The faintest visible stars are dimmer than mag. 10.
The well known variable R CrB, a carbon star, had reached its minimum and is not visible. The globular
cluster M13 in Hercules can be seen in the yellow square on the left between two stars.
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