Sky at Night Magazine - - THE SKY GUIDE -

The Rosette Neb­ula is a beau­ti­ful, al­most cir­cu­lar neb­ula com­plex sur­round­ing NGC 2244. It’s a large ob­ject de­scribed by the mul­ti­ple NGC num­bers: 2237, 2238, 2239 and 2246. NGC 2237 is some­times used as a la­bel for the Rosette. De­spite its mag. +9.0 list­ing, the Rosette is a tricky ob­ject as its large 80x60-ar­cminute size creates low sur­face bright­ness. The use of a UHC or OIII fil­ter is highly rec­om­mended. An OIII fil­ter will cre­ate the great­est con­trast but a UHC fil­ter will show the most neb­u­los­ity. Hold­ing a UHC fil­ter up in front of just your eye should make the neb­ula stand out too. SEEN IT

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