NGC 2660 is an open star cluster in the ship's constellation Sail and has an angular extent of 3.0 'and an apparent magnitude of +8.8 mag. It was discovered by John Herschel on December 29, 1834, and is also referred to as OCL 759 or ESO 260-SC4.
Long exposures in the light of Ha reveals lots of filaments probably related with the Vela SNR
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