Sh2-308 – Dolphin Head nebula
in Canis Major
Sh2-308, also designated as Sharpless 308, RCW 11, or LBN 1052 and commonly known as the Dolphin-Head Nebula, is an H II region located near the center of the constellation Canis Major, composed of ionized hydrogen. It is about 8 degrees south of Sirius. The nebula is bubble-like and surrounds a Wolf–Rayet star named EZ Canis Majoris. The nebula is about 1,875 – 5,870
light-years away from Earth, depending on the source. From Wikipedia.
Imaging Details
Telescope: 6 inch f/4 Newtonian with Paracorr Type 2 (effective focal length 690mm) and 2” Feather Touch Focuser
Camera: Player One Poseidon-C Pro, Anti-Halo Pro Ha+OIII filter, Filter Drawer Max
Resolution: 1.11 arcsec/px
Mount: Mesu Mount 200
Guiding: Player One OAG Max and ZWO ASI290MM Mini guide camera
Exposure Length: HOO: 300 sec x 24
Location: Winter Star Party 2024
Date: 2/10/2024
Software: SciTech, SkyGuide (Innovations Foresight), N.I.N.A., Optic FocusLynx, Pixinsight, SkySafari Pro