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Contains:  IC 1805
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The Heart of the Heart - Melotte 15, 


The Heart of the Heart - Melotte 15

The Heart of the Heart - Melotte 15

Technical card

Resolution: 2056x2062

Dates:Dec. 20, 2017

Astrodon Ha 1.25 5nm: 66x600" -15C bin 1x1
Astrodon O3 1.25 5nm: 39x600" -15C bin 1x1
Astrodon S2 1.25 5nm: 52x600" -15C bin 1x1

Integration: 26.2 hours

Darks: ~50

Flats: ~15

Bias: ~400

Avg. Moon age: 1.97 days

Avg. Moon phase: 4.33%

Bortle Dark-Sky Scale: 2.00 job: 1889088

RA center: 38.168 degrees

DEC center: 61.456 degrees

Pixel scale: 1.654 arcsec/pixel

Orientation: 8.481 degrees

Field radius: 0.669 degrees

Locations: Remote observatory : Apollo IV @ e-EyE, Fregenal de la Sierra, Extremadura, Spain


The Heart of the Heart - Melotte 15 at the center of IC 1805.
Last image from 2017
The Heart Nebula (IC 1805) is an emission nebula located at an approximate distance of 7,500 light years from Earth, in the constellation Cassiopeia. It is also known as Sharpless 2-190 (Sh2-190).
The nebula’s glow comes from the radiation of a small open cluster of stars known as Melotte 15. The cluster contains very young, blue, hot supergiant stars about 1.5 million years old. It is located near the nebula’s centre and home to several bright stars with a mass almost 50 times that of the Sun, as well as many faint stars far less massive than the Sun. Melotte 15 once contained a microquasar, a radio emitting X-ray binary system, but the system was expelled from the cluster millions of years ago.
On the upper-right we can also localize the open cluster C0225+615.



License: None (All rights reserved)

Sky plot

Sky plot


The Heart of the Heart - Melotte 15, 



In these public groups

Entre Encinas y Estrellas (e-EyE)