NGC 2237
Rosette Nebula · Emission nebula + open cluster · HOO
~11h total
Antlia ALP-T
Columbus, OH · Bortle 5
Antlia ALP-T
Columbus, OH · Bortle 5
The target
A 130-light-year-wide cloud of hydrogen with an open cluster blown through its middle. The cluster (NGC 2244) is what's ionizing it.
Processing
- Stacked in PixInsight (WBPP) with calibration frames
- StarXTerminator star removal
- BlurXTerminator deconvolution
- NoiseXTerminator noise reduction
Acquisition
| Type | Emission nebula + open cluster |
| Constellation | Monoceros |
| Distance | 5,200 ly |
| Apparent magnitude | +6.0 |
| Apparent size | 80' × 80' |
| Integration | ~11h |
| Palette | HOO |
| Filters | Antlia ALP-T |
| Shot | Feb 2026 |
| From | Columbus, OH · Bortle 5 |
Equipment
| Telescope | 3D-printed 150mm f/5 Newtonian astrograph |
| Camera | ASI533MC Pro |
| Mount | Proxisky Umis20s |
| Filters | Antlia ALP-T |
| Guiding | SVBony 60mm guide scope · 22mm mini guide cam · PHD2 |