Spectra of Planetary Nebulae
| Nebula | IC4997 | RA (J2000) | 20 20 08.7 |
| Constellation | Sagitta | Dec | +16 43 53.9 |
| Size (arcsec) | 2.5 | Other names | PK 058-10.1 |
| Mag (V) | 11.15 | QV Sge | |
| Surface Brightness (mag/arcsec2) | n/a | VV256 |
HAG 24" RC, SBIG STF-8300M, LHires II, 300gr/mm, 10 x 30 + 600 sec, 2019-08-12@21:00
Slight trace of nitrogen and helium DSS2 image, 10 arcmin square
20 / 187 (pg 41)