Caldwell 49 - The Rosette Nebula - aka SH2-275

The Rosette Nebula which is located in the constellation of Monoceros (The Unicorn), is a region of ionized Hydrogen gas and dust in our galaxy, giving rise to intense new star formation.
The largest stars contained in the NGC 2244 open cluster in the center of the nebula are burning so bright and furiously hot, that they have blown much of the Hydrogen gas away from themselves away from Earth to create the somewhat donut appearance.
The Rosette Nebula lies at a distance of about 5,000 light-years from Earth and spans about 130 light-years across.

Image acquisition and processing information:

First Image:
Date: December 24th, 2022
Telescope: Celestron C11 telescope using a Hyperstar v4 lens (at F1.9)
Mount: Celestron CGE Pro
Camera: ZWO ASI-2400 MC Pro one-shot-color camera
Guiding: Telescope: Orion 60mm with helical focuser, Camera: ASI-120 MM mini monochrome guide camera
Exposures: 51 two-minute exposures using a IR/UV cut filter
Image acquisition and guiding: ASIAIR Plus
Image processing Software: PixInsight v. 1.8.9.1

Second Image:
Date: September 29th, 2019
Telescope: Celestron C8 telescope using a Hyperstar v3 lens
Mount: Celestron CGE Pro
Camera: ZWO ASI-183 MM Pro monochrome camera equipped with a Baader UFC 2" Filter Slider
Image acquisition software: Sequence Generator Pro v. 3.0.3.169
Exposures: 27 five-minute exposures binned 2x2 using a Baader high speed narrow-band Ha filter
Guiding: Telescope: AstroTech AT72ED, Camera: Starlight Xpress Trius Pro 814 CCD, Software: PhD2
Image processing Software: PixInsight v. 1.8.5