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Fleming 1 - iTelescope T32.jpg

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The bright (magnitude 11.6) but obscure planetary nebula Fleming 1, aka Y-C 2-11 or ESO 170-6, in Centaurus, and discovered by Wlliamena Fleming on Harvard photo plates. While not in the usual NGC or IC catalogues, Fleming 1 is surprisingly bright and obvious visually at the eyepiece, albeit of a larger reflector telescope. How did John Herschel miss this in his survey of the southern sky?

Technical:
Images taken remotely July 22, 2024 on a moonlit and partly cloudy night, with the T32 Planewave 17-inch CDK telescope with a Finger Lakes 16803 camera, at the Siding Spring iTelescope Observatory after a couple of failed cloudy nights. North is up.

This is a stack of LRGB exposures, 120-seconds for Luminance and 240-seconds each for the RGB filters, for 5 subs in each filter. Stacked and aligned with groups in Affinity Photo and exported as a PSD to finish processing in Photoshop.
Copyright
© 2024 Alan Dyer/AmazingSky.com
Image Size
4000x4000 / 7.4MB
Contained in galleries
NGC/IC Objects, My Latest, Nebulas
The bright (magnitude 11.6) but obscure planetary nebula Fleming 1, aka Y-C 2-11 or ESO 170-6, in Centaurus, and discovered by Wlliamena Fleming on Harvard photo plates. While not in the usual NGC or IC catalogues, Fleming 1 is surprisingly bright and obvious visually at the eyepiece, albeit of a larger reflector telescope. How did John Herschel miss this in his survey of the southern sky?<br /> <br /> Technical: <br /> Images taken remotely July 22, 2024 on a moonlit and partly cloudy night, with the T32 Planewave 17-inch CDK telescope with a Finger Lakes 16803 camera, at the Siding Spring iTelescope Observatory after a couple of failed cloudy nights. North is up. <br /> <br /> This is a stack of LRGB exposures, 120-seconds for Luminance and 240-seconds each for the RGB filters, for 5 subs in each filter. Stacked and aligned with groups in Affinity Photo and exported as a PSD to finish processing in Photoshop.