Heart Nebula - IC 1805, Sharpless 2-190 (Drew Evans)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14552 · HD14558 · HD14794 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15640 · HD15665 · HD15785 · HD15851 · HD16183 · HD16218 · HD16349 · HD16410 · HD16429 · HD16626 · HD16799 · IC 1795 · IC 1805 · IC 1824 · LBN 645 · LBN 646 · And 26 more.

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Heart Nebula - IC 1805, Sharpless 2-190

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Heart Nebula - IC 1805, Sharpless 2-190

Just in time for Valentine's Day - the Heart Nebula (IC 1805, Sharpless 2-190)

The Heart Nebula lies some 7500 light years away from Earth. It 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. This nebula is formed by plasma of ionized hydrogen (HII) and free electrons. The hydrogen has been ionized by ultraviolet radiation from young hot stars.

I spent 4 evenings capturing the image, 19 hours total of monochrome data acquisition. There are 5 hours of Hydrogen Alpha data and around 7 hours each of SII and OIII data. Seeing was quite good all three nights, as there is very little transparency to see through the nebula. The image was color assigned using Hubble Palette, preliminary processing and calibration was done with APP and final processing was done with Pixinsight and Lightroom.

OTA: William Optics SpaceCat 51 APO 250mm f/4.9
Mount: ZWO AM5 Harmonic Drive
Camera: ZWO ASI2600MM Pro
Gain: 100
Cooling Temperature: -10 degrees celsius

Filters (IDAS 6nm):
Sii 🟢 43 x 600s = 7.2 hrs
Ha 🔴 59 x 300s = 5 hrs
Oii 🔵 41 x 600s = 6.8 hrs

19 hours total integration

Auto-guiding: ZWO ASI290MM Mini and ZWO M48 OAG
Control: ZWO ASIAIR Pro
Calibrated in Astro Pixel Processor with darks and flats
Processed in Pixinsight and Lightroom

Location: Bortle Class 2 skies near Flagstaff, Arizona
#astrophotography #astronomy #space #nebula

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Status	Advanced success
Started	...
Astrometry.net job	7170596
PixInsight job	JBP8G8ZR3NCK6JZO1HA9HKP68AP82NBS
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h32m37s.51
RA (top/left)	02h33m46s.30
RA (top/right)	02h47m23s.56
RA (bottom/right)	02h31m18s.41
RA (bottom/left)	02h18m27s.50

Dec (center)	+61°26′45″.0
Dec (top/left)	+59°36′12″.2
Dec (top/right)	+62°02′14″.5
Dec (bottom/right)	+63°16′56″.5
Dec (bottom/left)	+60°45′24″.7

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Heart Nebula - IC 1805, Sharpless 2-190

Heart Nebula - IC 1805, Sharpless 2-190

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Heart Nebula - IC 1805, Sharpless 2-190

Heart Nebula - IC 1805, Sharpless 2-190

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