More than astrophotography, an astronomical exploration.
NGC 2403
David Cruz · Astromidnight
In Camelopardalis, about 10 million light-years away, a spiral galaxy similar to our neighbour M33. The pink knots in the arms are clouds of hydrogen where stars are being born.
| Catalogue | New General Catalogue · NGC 2403 |
| Type | Spiral galaxy |
| Distance | ≈ 10 million light-years |
| Field | 82.3′ × 53.5′ |
| Scale | 0.54″ / pixel |
| Orientation | 88° · east up |
| RA (centre) | 07h 36m 51s |
| DEC (centre) | +65° 36′ 39″ |
| Constellation | Camelopardalis |
| Objects in field | NGC 2403 · NGC 2404 · 3 supernovae and impostors · 4 background galaxies |
Distance of NGC 2403 according to APOD (2011, 2024); NASA/Hubble gives ≈ 11 million. The real width is omitted because the field includes background galaxies about 30 times more distant. The distances of the background galaxies are estimated from redshift (SIMBAD) using Hubble's law, so they are approximate. NGC 2404 and the supernovae were positioned from NED and SIMBAD coordinates; NGC 2403 from the AstroBin label.
19 h 16 min of light
Each tick is a 240-second exposure. 289 in total, with the camera at −10 °C and gain 100. Calibrated with 30 darks, 30 flats and 30 bias. The Moon stayed below 50 % illumination throughout.
Carbon Newton 10' f/4
ZWO ASI2600MC Pro
Twinstar Friction Mount FG80
Askar M54 OAG · ZWO ASI120MM Mini
TS-Optics Maxfield .95X Coma Corrector
Adobe Photoshop · Pleiades Astrophoto PixInsight · Stefan Berg Nighttime Imaging 'N' Astronomy (N.I.N.A. / NINA)
São Pedro da Gafanhoeira, Évora · 358 m
Bortle 3