ALL SKETCHES BY HOWARD BANICH Nebula Deep-Dive NGC 2252 Cr 97 NGC 2246 HD 46150 12 Mon NGC 2238 NGC 2244 / NGC 2239 HD 46223 NGC 2237 SKETCH AS FINDER My finished pencil sketch is labeled with all the objects within or near the Rosette that are mentioned in the text. I hope you find it useful as a finder chart! North is upper right. and the sky probably continued to darken until the onset of dawn a couple of hours later, but I was too tired to find out. That moonset alone was worth the trip, and my observations of the Rosette felt like icing on the cake. A Piecemeal Rosette Like many of the better-known nebulae, the Rosette is a star-forming H II region. It contains a delightful 2- to 22 MARCH 2025 * SKY & TELESCOPE 3-million-year-old open star cluster with the designation NGC 2244. British astronomer John Flamsteed first noted it in 1690. John Herschel observed what was later cataloged as NGC 2239 in 1830, but this is now considered a duplicate listing of NGC 2244. Astronomers unveiled the Rosette in several phases. The prolific comet hunter Lewis Swift discovered NGC 2237, one of the nebula's brightest segments, in 1865 with a 4.5-inch