Sh2-303, Sh2-308 "Dolphin Head" (Jim Thommes)

Celestial hemisphere: Southern · Constellation: Canis Major (CMa) · Contains: 16 CMa) · The star Udra (ο1 CMa

Sh2-303, Sh2-308 "Dolphin Head"

Link: https://www.jthommes.com/Astro/Sh2-303_308.htm

Sh2-303, Sh2-308 "Dolphin Head"

Link: https://www.jthommes.com/Astro/Sh2-303_308.htm

This is a two panel mosaic image. It shows the region around Sh2-303 and Sh2-308 (also known as the "Dolphin Head Nebula"). Sh2-303 is the emission nebula on the left and Sh2-308 is on the right. Both of these emission objects are ionized by the Wolf-Rayet star WR 6 - approximately in the middle of Sh2-308. Also in this image are the small bright planetary nebula PNG 233.0-10.1 and the large dim planetary nebula PNG 234.9-09.7 - the latter located right at the lower edge of Sh2-308 in this image. The open cluster Berkeley 75 is at the top edge of this image - its distance is about 37,000 light years. There are also a number of background galaxies that can be seen n the full size image (at full zoom). A visible quasar is seen near sh2-303 - WISEA j065440.34-220321.0 with a 5.052 billion year light travel time. These objects and some of the brighter stars are identified in the annotated image.

Link to Pan and Zoomable Annotated Image

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Sh2-303, Sh2-308 "Dolphin Head"

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Sh2-303, Sh2-308 "Dolphin Head"

Sh2-303, Sh2-308 "Dolphin Head"

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