The Rosette Nebula sh2-275 is one of the most beautiful objects in the winter sky, making it a great classic of astrophotography! It was discovered in 1865 by the American astronomer Lewis Swift.

 With our high definition image and available in .jpg and .png, print the image at home and do with it what you want! Whether in the living room, a bedroom or in your office, the Rosette Nebula will find its place in your home. It is also an ideal gift for an astronomy enthusiast!

 The Rosetta Nebula is comparable in size in the sky to the Orion Nebula except that it is actually four times further away. It is therefore a gigantic object but 100 times less luminous and therefore invisible to the naked eye.

 Like most nebulae, it is a star nursery. The stars thus created are mainly type O, which corresponds to blue giants. The cluster located at the heart of the nebula is thus made up of very young stars, only 8 million years old, and some, like HD46150, are nearly 60 times larger than our sun and 450,000 times more luminous. It is precisely these stars that ionize the central region and give it its blue color.

 The spherical cavity at the center is a phenomenon known as the "Strömgren Sphere" after its discoverer, astrophysicist Benêt Strömgren in the late 1930s.

 The image presented is an SHO composition, created according to our lesson no. 15, and is the result of a mosaic of four panels (lesson no. 13). The Ha and OIII layers were captured using an L-Ultimate filter and extracted using Siril software added to an SII filter because we use a color camera (533mc pro).

 The processing was carried out only in PixInsight: creation of SHO mosaics, creation of luminance, processing of the latter and exaggeration of details and contrasts, processing of SHO layers, SHO creation, processing, color calibration and reintroduction of stars. The finishing touches were done in Lightroom.

 Equipment used :
 -Skywatcher 80ed Evostar
 - ZWO 533mc pro
 - ZWO 120mm mini
 -ZWO AM5
 - Asiair plus
 -EFW
 - FAE
 - OAG
 - L-Ultimate filter for Ha and OIII layers
 - SII filter
 - Stacked and Ha/OIII extracted with Siril
 - Processed with PixInsight
 - Finishes with Lightroom