IC 1805 (Sh2-190, Heart Nebula) in Cassiopeia

© Velimir Popov & Emil Ivanov 2020
Size: 2000 px
IC 1805 (or Sh2-190, Heart Nebula) is an emission nebula in the constellation Cassiopeia. It is a mix of glowing interstellar gas and dark dust clouds. Derived from its shape, its nickname is Heart Nebula. It is at about 7,500 light-years away in the Perseus spiral arm of our galaxy. It is a huge star nursery. Near the center of IC 1805 there are the massive hot stars of a newborn star cluster, which is known as Melotte 15. The age of the stars in the cluster is estimated to about 1.5 million years. This view of the region around the Heart Nebula is cropped from a larger CCD image, which can be seen here:

Image details:


Center of field RA 02:33:51 (h:m:s)
Center of field DE +61:16:24 (deg:m:s)
Size 3.73 x 2.53 (deg)
Pixel scale: 6.71 (arcsec/pixel)
Orientation: Up is 355 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): Canon 300 mm  F/2.8 lenses
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: Jul.2011
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: L:12x10min;R:6x10 min, G:6x10 min, B:6x10 min; Ha:8x15minBin 1 Total exp.time: 420min (7:00 hrs)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2020. All Rights Reserved
e-mail: info@irida-observatory.org
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