Fish Head Nebula – IC 1795

Fishhead Nebula (IC 1795) is a bright emission nebula of about 70 light-years across with glowing gas and dark lanes of obscuring dust, located just over 6,000 light-years away from Earth in the northern constellation of Cassiopeia. The stars inside IC 1795, energizing the nebula and making it glow, have not yet emerged from their natal cocoon. In other words, we can’t see the massive stars lighting up this nebula. This suggests that the stars inside are very young, on the order of millions of years. That is young in comparison to stars like the Sun, which is nearly 5 billion years old. These stars are also probably quite massive, since the nebula is so prominent and bright. This image was also mostly taken during the bright Moon using Hydrogen Alpha filter.

ic1795-1609-web. Exposure time 8.5 hours (18 Hydrogen Alpha images of 20 minutes each & 4 each of RGB images of 10 minutes each).

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