Let’s set sail and sail towards the light !
Collaboration with my friend Gaëtan Mxt, who captured this beautiful object in full (23:25 exposure). I did the processing myself.
Full image : https://www.astrobin.com/full/liya5y/C/
NGC 225, also known as the Sailboat Cluster, is an open cluster located about 2,140 light-years from Earth in the constellation Cassiopeia. One of its stars, the variable star “V594 Cas”, illuminates the blue reflection nebula vdB 4.
A reflection nebula is created when the light from a star is scattered or reflected by a nearby dust cloud. The scattered light has a spectrum similar to that of the illuminating star, but bluer, with blue light being scattered more efficiently than the longer red wavelengths. This often blue color is therefore characteristic of these nebulae.
This cluster is embedded in dark molecular clouds that partially reflect the starlight.
Exifs :
27 – 29 octobre 2024
3 – 5 novembre 2024
Optolong Blue 2″: 30×300,″(2h 30′)
Optolong Green 2″: 42×300,″(3h 30′)
Optolong H-Alpha 3nm 2″: 47×600,″(7h 50′)
Optolong Luminance 2″: 65×300,″(5h 25′)
Optolong Red 2″: 50×300,″(4h 10′)
Intégration totale : 23h25
TS-Optics N-AG12 Newtonian Astrograph
Sky-Watcher EQ8-R Pro
ZWO ASI6200MM Pro
Optolong SHO 3nm 2”
Optolong LRGB 2″
Siril – PixInsight – Photoshop