IC 1805 - The Heart Nebula in HaRGB (Christophe Perroud)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · IC 1805 · IC 1824 · NGC 1027 · NGC 896 · Sh2-190 · Sh2-192 · Sh2-193 · Sh2-194 · Sh2-196

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IC 1805 - The Heart Nebula in HaRGB

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IC 1805 - The Heart Nebula in HaRGB

Very good weather and sky condition last two weeks, so I was able to shot a new target I wanted to catch since long time ago : IC 1805, the Heart Nebula in constellation Cassiopeia. This beautiful double-ionized gas region holds several nice features such as the Fish Head Nebula (NGC896) and Melotte 15, a open cluster located in the brightest central part of the nebula, home of O-type supergiant stars about 50 to 100 times the Sun’s mass.

On the right border of the heart-shaped nebula is also Mk 6, Markarian 6, a nice open cluster with less than ten bright stars. IC1805 lies some 7’500 l.y. away and spans 200 l.y.

I did 60min Ha and 210 min RGB integration (means without filter) over two nights on not-so-bad conditions : no wind, no high clouds, no dew at all. Temperature around 15°C.

This is the 2nd time I combine Ha and RGB datas to create a single image using NBRGBCombination script. I processed each image individually before combine them together and processed some small touch-up as usual. Still a lot to learn under PI but it makes so much fun ;-) I hope you will enjoy this image and do not hesitate to post any comment and suggestion ;-)

Takahashi Refractors
Imagers of Switzerland

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Status	Advanced success
Started	...
Astrometry.net job	2907850
PixInsight job	LSJXU6SZ4165XOCNDL0QDUCTN87P8M56
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h33m43s.30
RA (top/left)	02h33m28s.61
RA (top/right)	02h15m59s.10
RA (bottom/right)	02h33m55s.33
RA (bottom/left)	02h52m27s.39

Dec (center)	+61°31′01″.5
Dec (top/left)	+63°51′01″.8
Dec (top/right)	+60°35′26″.2
Dec (bottom/right)	+59°10′36″.6
Dec (bottom/left)	+62°17′15″.1

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IC 1805 - The Heart Nebula in HaRGB

IC 1805 - The Heart Nebula in HaRGB

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IC 1805 - The Heart Nebula in HaRGB

IC 1805 - The Heart Nebula in HaRGB

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