Sh2-261 – Lower’s Nebula

SH2-261 / Lower's Nebula

Lower’s nebula (Sh2-261) is found on the outermost edge of our Milky Way between the Orion and Perseus arm. Sh2-261 is a large faint region of predominantly ionized hydrogen. The nebula is named after Harold and Charles Lower who discovered this nebula in 1939.

I took 300 4 minute exposures over the course of 5 nights in October 2024. I used APT, Astro Photography Tool, from my driveway here in the hills of western North Carolina.

As a predominantly ionized hydrogen (Hii) gas cloud, Lower’s Nebula takes on a distinct reddish hue in long exposure astrophotography. I applied an HOO color map to the final image to help highlight structures and dark nebula within.

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