I had several hours of clear sky starting at 22:30 on 2023/10/18 and I started off with M45 until NGC 2264 was high enough, which was around 01:30 and I captured until about 05:30.  However during my session I was treated by clouds starting around 04:40 and cleared up by 05:00, by which time I was very tired and was glad it was almost  time to pack-up and get some sleep.  This image was processed in SIRIRL and I used Drizzle.  I used BlurXterminator and NoiseXterminator in PixInsight.  I might give processing another go in PixInsight.
NGC 2264 is the designation number of the New General Catalogue that identifies two astronomical objectsas a single object: the Cone Nebula, and the Christmas Tree Cluster. Two other objects are within this designation but not officially included, the Snowflake Cluster,[3][4] and the Fox Fur Nebula.[5]All of the objects are located in the Monoceros constellation and are located about 720 parsecs or 2,300 light-years from Earth.[2] Due to its relative proximity and large size, it is extremely well studied.[6]NGC 2264 is sometimes referred to as the Christmas Tree Cluster and the Cone Nebula. However, the designation of NGC 2264 in the New General Catalogue refers to both objects and not the cluster alone.NGC 2264 is the location where the Cone Nebula, the Stellar Snowflake Cluster and the Christmas Tree Cluster have formed in this emission nebula. For reference, the Stellar Snowflake Cluster is located 2,700 light years away in the constellation Monoceros. The Snowflake Cluster was granted its name due to its unmistakable pinwheel-like shape and its assortment of bright colors. The Christmas Tree star formation consists of young stars obscured by heavy layers of dust clouds. These dust clouds, along with hydrogen and helium are producing luminous new stars. The combination of dense clouds and an array of colors creates a color map filled with varying wavelengths. As seen in the photographs taken by the Spitzer Space telescope, we are able to differentiate between young red stars and older blue stars.With varying youthful stars comes vast changes to the overall structure of the clusters and nebula. For a cluster to be considered a Snowflake, it must remain in the original location the star was formed.
When referring to this emission nebula overall, there are several aspects that contribute to the prominent configuration of a snowflake and/or Christmas tree cluster. There is a diverse arrangement of brilliant colors, and an evolving process of structure that follow star formation in a nebula.The ratio of brown dwarfs to stars is between 1 to 2.5 and 1 to 7.5.[6]

REFERENCES:

1. "NGC 2264". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 9 May 2007.
2. Maíz Apellániz, J. (2019). "Gaia DR2 distances to Collinder 419 and NGC 2264 and new astrometric orbits for HD 193 322 Aa,Ab and 15 Mon Aa,Ab". Astronomy & Astrophysics. 630: A119. arXiv:1908.02040. Bibcode:2019A&A...630A.119M. doi:10.1051/0004-6361/201935885. S2CID199452805.
3. Image sig05-028Archived 2006-09-07 at the Wayback Machine
4. "Tom's Astronomy Blog » Blog Archive » The Christmas Tree Cluster". Archived from the original on 1 December 2010. Retrieved 20 December 2006.
5. Nemiroff, R.; Bonnell, J., eds. (1 July 2002). "The Fox Fur Nebula". Astronomy Picture of the Day. NASA.
6. Pearson, Samuel; Scholz, Aleks; Teixeira, Paula S.; Mužić, Koraljka; Almendros-Abad, Víctor (2021). "The first spectroscopically confirmed brown dwarfs in NGC 2264". Monthly Notices of the Royal Astronomical Society. 507 (3): 4074–4085. doi:10.1093/mnras/stab2394. hdl:10023/24020.
7. Seligman, Courtney. "New General Catalogue objects: NGC 2250 - 2299". cseligman.com. Retrieved 9 September 2021.

@information from Wikipedia