Spectra of Planetary Nebulae
| Nebula | M4-12 | RA (J2000) | 19 13 05.2 |
| Constellation | Aquila | Dec | +15 46 39.8 |
| Size (arcsec) | 20 | Other names | PK 049+02.1 |
| Mag (V) | 15 | Hen 2-428 | |
| Surface Brightness (mag/arcsec2) | n/a |
HAG 24" RC, SBIG STF-8300M, LHires II, 300gr/mm, 1800 sec, 2021-05-31@23:00
Small faint smudge. Top: Raw spectrum with light pollution. Bottom: Light pollution subtracted DSS2 image, 10 arcmin square
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