Sh2-292 — Seagull Nebula
HII Region in Monoceros
About
The compact top of the Seagull complex, where Monoceros meets Canis Major, about 3,700 light-years away. It glows from HD 53367, a young Be star of about 20 solar masses. It is both emission and reflection nebula, and is also listed as IC 2177.
Imaging tips
- Framing runs 200–340 mm on APS-C; the cluster NGC 2335 lies about 43′ away, so it belongs to a wider field.
- Part emission, part reflection: Hα, OIII and SII suit the glowing gas (one imager made an SHO image), while the blue reflection part needs broadband.
- A tracking mount or star tracker is needed; one guide suggests a 300 mm lens as an alternative to a telescope.
- Best around December and January; it stays below about 30° altitude from 50°N.
Facts
- Size
- 120′
- Magnitude
- —
- Coordinates
- RA 7h 4.4m, Dec −10° 27′
- Framing, APS-C
- 200–340 mm
- Framing, full frame
- 310–520 mm
- Best months
- Jan, Dec
- Peak altitude
- 30° from 50°N, 45° from 35°N
Nearby
- H-NGC2335 · 43.2′ away