Caldwell 49, The Rosette nebula
Constellation: Monoceros
The Rosette nebula (Caldwell 49) is an H II region located in the constellation of Monoceros. It contains the open cluster NGC 2244 (also known as Caldwell 50). It is about 5’200 Ly away. Link to interactive sky chart.
Dates:
This image was taken in November and December, 2023.
Telescope & Mount:
Takahashi E180 on a Paramount MX mount.
Imaging:
Camera: ASI2400MC-Pro (bin 1×1)
Data:
Askar ColorMagic Sii-Oiii: 106x120s
Askar ColorMagic Ha-Oiii: 86x120s
Total integration time: 6h 24′
Some closeups of the core of the Rosette nebula:
Dates:
This is derived from the outstanding data taken by Martin Pugh during January 2025 (Martin’s website: Remote Astrophotography with Martin Pugh (martinpughastrophotography.space).
His telescope is located in Chile (Observatory: El Sauce).
Color palette is SHO.
Telescope & Mount:
Planewave CDK24 on a Planewave L600 mount.
Imaging:
Camera: Moravian C3-61000 (bin 2×2)
Data:
Nebula:
Astrodon Ha: 20x900s
Astrodon O3: 20x900s
Astrodon S2: 20x900s
Stars:
Astrodon R: 10x180s
Astrodon G: 10x180s
Astrodon B: 10x180s
Total integration time: 16h 30′
Dates:
This is derived from the outstanding data taken by Martin Pugh during January 2025 (Martin’s website: Remote Astrophotography with Martin Pugh (martinpughastrophotography.space).
His telescope is located in Chile (Observatory: El Sauce).
Color palette is SHO.
Telescope & Mount:
Planewave CDK24 on a Planewave L600 mount.
Imaging:
Camera: Moravian C3-61000 (bin 2×2)
Data:
Nebula:
Astrodon Ha: 20x900s
Astrodon O3: 20x900s
Astrodon S2: 20x900s
Stars:
Astrodon R: 10x180s
Astrodon G: 10x180s
Astrodon B: 10x180s
Total integration time: 16h 30′