IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION (Stefano Attalienti)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · IC 1824 · LBN 645 · LBN 646 · LBN 647 · LBN 648 · LBN 650 · LBN 654 · LBN 655 · LBN 656 · LBN 657 · LBN 658 · LBN 659 · LBN 663 · LDN 1356 · LDN 1359 · LDN 1360 · LDN 1361 · LDN 1362 · LDN 1363 · LDN 1364 · LDN 1365 · LDN 1366 · LDN 1367 · LDN 1368 · LDN 1369 · LDN 1370 · LDN 1371 · LDN 1372 · And 8 more.

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IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION

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IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION

IC 1805 is a very large zone of ionized hydrogen in association with several open star clusters and its distance is estimated to be about 7500 light years from the solar system. Its main feature is the presence of two large areas apparently empty but in reality rich in ionized oxygen, of different sizes, which make the nebula similar to a "heart". Inside there is a system of small, poorly concentrated open clusters, responsible for the ionization of the nebula. The most notable of these is Melotte 15, which contains some stars about 50 times as massive as the Sun, plus others smaller and a microquasar ejected millions of years ago. This and the nearby IC 1848 form a large cloud complex known as the W3 / W4 / W5 or "Heart and Soul" complex; the "heart" is IC 1805, while the "soul" is represented by IC 1848. Near the nebula there are multiple episodes of star formation and through the images obtained in the H-α an expanding superbubble formed was discovered from ionized hydrogen of the extension of 1200 pc and emerging from the galactic plane, whose age, of about 10-20 million years, is an indicator of the fact that it originated as a result of the action of the stellar wind of a first generation of massive stars.

Narrowband imaging
Suburban Astrophotography
The refractors!
CMOS Imagers
Cloudy Nights
Constructive Critique Requested
Imagers of Italy

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Status	Advanced success
Started	...
Astrometry.net job	6553672
PixInsight job	W0KHMMVBL33MFPLIFJBCA8T85SFDHMBW
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m37s.98
RA (top/left)	02h44m08s.45
RA (top/right)	02h43m00s.90
RA (bottom/right)	02h19m46s.30
RA (bottom/left)	02h23m34s.89

Dec (center)	+61°28′57″.6
Dec (top/left)	+59°35′20″.5
Dec (top/right)	+63°31′08″.6
Dec (bottom/right)	+63°18′33″.6
Dec (bottom/left)	+59°24′19″.6

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IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION

IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION

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IC 1805 - THE HEART NEBULA - CASSIOPEIA CONSTELLATION

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