Contains: IC 1805
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IC1805

Technical card

Resolution: 1434x1406

Dates: Dec. 20, 2014

Frames: Ha: 9x1200" -30C bin 2x2

Integration: 3.0 hours

Darks: ~10

Flats: ~12

Bias: ~15

Avg. Moon age: 27.85 days

Avg. Moon phase: 3.17%

Astrometry.net job: 477076

RA center: 38.494 degrees

DEC center: 61.502 degrees

Orientation: 0.725 degrees

Field radius: 0.562 degrees

Locations: Hill Observatory, Ft. Lauderdale, FL, None

Description

The Heart Nebula, IC 1805, Sh2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons.

The very brightest part of this nebula (the knot at the right) is separately classified as NGC 896, because it was the first part of this nebula to be discovered.

The nebula's intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula's center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun's mass. The cluster used to contain a microquasar that was expelled millions of years ago.

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Author

Chuck Faranda
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IC1805, 




    

        Chuck Faranda