B47
Dark Nebula in Ophiuchus
About
A dark nebula in Ophiuchus, also listed as LDN 1792 in the Lynds catalogue. Barnard included it in his 1927 catalogue of about 350 objects.
Imaging tips
- About 15′ × 10′, so 1620–2690 mm on APS-C or 2480–4130 mm on full frame frames it.
- As a dark nebula it needs broadband rather than narrowband filters.
- Peaks near 17° altitude from 50°N, so it sits low; May and June are the best months.
Facts
- Size
- 15′ × 10′
- Magnitude
- —
- Coordinates
- RA 16h 59.6m, Dec −22° 35′
- Framing, APS-C
- 1620–2690 mm
- Framing, full frame
- 2480–4130 mm
- Best months
- May, Jun
- Peak altitude
- 17° from 50°N, 32° from 35°N