The beautiful center of the Rossete Nebula, shown here as a narrowband composition in the Hubble Palette (HST). The Rossete Nebula is located near a molecular cloud in the constellation Monoceros region of the Milky Way. The nebula is at a distance of 5,000 light-years from Earth. The central detail of this photo is the open star cluster NGC 2244 which is the heart of The Rossete nebula.
The beautiful center of the Rosette Nebula (HST)
| Telescope | ASA 10″ F/3.6 10N ASTROGRAPH OTA |
| Focal length | 900 mm |
| Mount | G53f |
| Imaging camera | Atik 460EX mono |
| Guiding cameras | Lodestar X2 -Autoguider |
| Guiding optics | ASA 10″- OAG |
| Focal reducers | ASA 3″ Wynne Corrector 0,85x |
| Constellations | Monoceros |
| Distance | 5000 light years |
| RA center | 06h 33′ 45″ |
| DEC center | +04°59′ 54″ |
| Location taken | Slovakia |
| Date taken | 04/2021 |
| Pixel scale | 1.04 arcsec/pixel |
| Filters | Astronomik Ha 6nm , Astrodon OIII 5nm, Astrodon SII 5nm, |
| Exposure | 24x1200s BIN1 Ha filter 20x600s BIN2 OIII filter 15x600s BIN2 SII filter |
| Total exposure | 14 hours |
| Processing software | PixInsight, CCD Inspector |
The processing the Rossete nebula was captured using narrowband filters.
(Hydrogen-alpha – H-α 6 nm, Sulfur – SII 6 nm, Oxygen – OIII 5 nm)
Here you see a few hours of individual images, which are processed by joining in Hubble (Narrowband in Hubble Palette). Photos are only gently stretched (CurvesTransformation).
You can see the final product above.
