The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm (Miran Brezočnik)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: HD14552 · HD14817 · HD15069 · HD15238 · HD15239 · HD15250 · HD15382 · HD15522 · HD15557 · HD15558 · HD15570 · HD15629 · HD15665 · HD15785 · HD15851 · HD15862 · HD16038 · HD16088 · HD16183 · HD16410 · HD16429 · HD16506 · HD16626 · HD16894 · HD236966 · HD236986 · HD236989 · IC 1795 · IC 1805 · IC 1824 · And 33 more.

The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm

This image of the Heart Nebula and the Fish Head Nebula was captured using the Askar FR400 refracting telescope with a 72 mm (2.8") lens diameter at a focal ratio of f/3.9, and the monochrome QHY268M camera. I captured the image over two consecutive nights, which turned out to be the highest-quality dark nights I have ever experienced for astrophotography. The stars were shining in the sky like diamonds, creating a truly magnificent experience. The total exposure time was 8 hours and 50 minutes. The image was processed in the SHO narrowband Hubble palette.

The nebulae are located approximately 7,500 light-years away from Earth and are part of our galaxy. They are rich in young, hot stars and are situated in an active star-forming region. The stars within the nebulae emit intense light, causing the ionization of the gases in the nebulae, particularly hydrogen, oxygen, and sulphur. The characteristic red light is produced by ionized hydrogen atoms. Ionized oxygen emits light predominantly in the blue-green part of the spectrum, while ionized sulphur emits light in the red-orange part of the spectrum. These specific emission lines give the nebula its characteristic colours when captured using narrowband filters.

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Status	Advanced success
Started	...
Astrometry.net job	8406787
PixInsight job	Y1XWNYRX8MEV8JN256E4Y59WGY4OWI9O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	02h34m47s.10
RA (top/left)	02h37m11s.20
RA (top/right)	02h50m27s.98
RA (bottom/right)	02h32m05s.24
RA (bottom/left)	02h19m01s.53

Dec (center)	+61°24′38″.8
Dec (top/left)	+59°32′34″.5
Dec (top/right)	+61°12′17″.5
Dec (bottom/right)	+63°16′24″.4
Dec (bottom/left)	+61°30′08″.1

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The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm

The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm

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The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm

The Heart Nebula and the Fish Head Nebula (IC 1805 and IC 1795): Telescope Askar FRA400 @ focal length 280 mm

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