NGC 2403
Feb 6, 2022
NGC 2403
| Other names | Caldwell 7, UGC 3918 |
| Type | Galaxy |
| Distance | 9.65 million ly |
| Size | 50,000 ly |
| Location | Camelopardalis |
| Captured | Feb 6, 2022 |
| Capture type | Broadband |
| Total time | 5 hours |
| Frames | L 60x120', RGB 30x120' each |
| Telescope | Orion 6" Newt F/3.8 Astrograph |
| Camera | ZWO ASI294mm |
| Tripod | Orion Atlas EQ-G |
NGC 2403
This is an unnamed galaxy designated NGC 2403. It’s physically the same size as the last galaxy I posted (the triangulum galaxy) however it’s significantly farther away. Whereas the triangulum is 2.7 million light-years away, NGC 2403 is 9.65 million light years away. This light was emitted well before humans ever evolved.
This image isn’t super impressive, it’s pushing the diffraction limit of my setup, it’s such a tiny galaxy to our view. If you hold out your pinky at arms length to the night sky, the width of the pinky is about one degree. Each degree has sixty arcminutes. This galaxy is 21 by 12 arcminutes. In other words, the galaxy is about 1/3 the width of your arm length pinky and 1/6 it in height.