IC 434 — Horsehead Nebula

Tue, 20 Jan 2026 21:00:00 +0100

IC 434 is a bright curtain of hydrogen‑alpha emission in Orion, ionised mainly by the hot O‑type stars of the Sigma Orionis system. In front of this pinkish glow sits the famous Horsehead Nebula (Barnard 33), a compact pillar of dark dust sculpted by stellar winds and intense ultraviolet radiation. The complex lies about 1,350–1,500 light‑years away on the eastern edge of Orion’s Belt, close to the brilliant star Alnitak (Zeta Orionis).

Visually, this area is challenging. The Horsehead itself is notoriously elusive in small telescopes because of its low contrast; under very dark skies and with a narrowband H‑alpha or UHC filter it can sometimes be hinted at in medium apertures. The wider IC 434 glow and the neighbouring Flame Nebula respond well to filters and long‑exposure imaging.

The field is particularly rich in contrasting nebular types. Immediately east of Alnitak lies the Flame Nebula (NGC 2024), a bright emission and dark‑lane complex. Just south of the Horsehead is the bluish reflection nebula NGC 2023, while faint filaments of IC 434 extend across much of the frame. Bright field stars form striking halos and diffraction around the belt region, adding to the scene.

What else is in this image?

In the image you can also see IC 434 as the background emission sheet, the Horsehead (B33) as a small, notched silhouette, NGC 2023 as a reflection patch below, and the Flame Nebula (NGC 2024) near Alnitak at the left edge. Several catalogued dark lanes thread the field along the Orion B molecular cloud.

View this image on AstroBin: https://app.astrobin.com/u/grodzik?i=iznra1#gallery


Telescope	SkyWatcher 150/750P
Mount	ZWO AM3N
Camera	ZWO ASI2600MC Pro
Filters	Astronomik UHC 2"
Exposure	94 × 120s (3h 8min)
Bortle	5
Moon	Waxing crescent (3.1%)
Processing	Siril, Prism Deep, Axiom2, CosmicClarity

IC 1848 — Soul Nebula

Fri, 03 Oct 2025 21:00:00 +0200

IC 1848, better known as the Soul Nebula, is a vast H II star‑forming complex in Cassiopeia and the eastern half of the famous Heart and Soul pair. It glows strongly in hydrogen‑alpha, threaded with dark dust lanes and sculpted pillars shaped by the radiation and winds of massive young stars. Embedded open clusters light up the nebulosity; the Index Catalogue designation IC 1848 historically refers to the stellar association within this region.

From mid‑northern latitudes the Soul rises high in the autumn and winter sky, making October evenings a convenient time to image it. Visually it is a challenging, low‑contrast target requiring dark skies; narrowband or broadband UHC filters help bring out the emission. The field here fits well within an APS‑C sensor at 750 mm focal length, framing the brighter central structures along with surrounding filaments.


Telescope	SkyWatcher 150/750P
Mount	motorised EQ3-2
Camera	Canon 600D (astro‑mod)
Filters	Astronomik UHC 2"
Exposure	59 × 120s (1h 58min)
Bortle	5
Moon	Waxing gibbous (84.4%)
Processing	Siril, Prism Deep, CosmicClarity, Gimp

Emission Nebula on AstroT3k

IC 434 — Horsehead Nebula

What else is in this image?

IC 1848 — Soul Nebula