The Porpoise Nebula in Canis Major.
This faint Oxygen III nebula is catalogued as Sharpless 308 in the constellation of Canis Major and is commonly called the Gourd Nebula, but I am one of those people who see a Porpoise first, or I am fonder of porpoises than gourds anyway. The nebula is classified as a Wolf-Rayet bubble and originates from the star located close to the centre of the frame.
Televue NP127is Refractor at f/5.2, Astrodon 3-nm H alpha and OIII filters, QSI 683wsg camera. Mount: EQ8. Data capture from suburban Sydney.
H alpha: 29 x 21 minutes = 10 hours, OIII: 38 x 21 minutes + 10 x 28 minutes = 18 hours. All exposures used 2 x 2 binning.
Software: Nebulosity 4, PHD 2, PixInsight, Lightroom and Photoshop.