IC 289 • Planetary Nebula (My Smallest DSO) (Douglas J Struble)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 289

IC 289 • Planetary Nebula (My Smallest DSO), Douglas J Struble

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IC 289 • Planetary Nebula (My Smallest DSO)

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IC 289 • Planetary Nebula (My Smallest DSO)

Setting out to capture IC 289 was my biggest challenge ever at only 0.50 arc minutes. I wanted to see how much detail I could resolve through integration time and processing compared to what was done from the Mount Lemmon SkyCenter Schulman Telescope that is 32" in size:

https://commons.wikimedia.org/wiki/File:IC289_Planetary_Nebula_from_the_Mount_Lemmon_SkyCenter_Schulman_Telescope_courtesy_Adam_Block.jpg

I was pretty happy with my results. My image scale was 0.68"/pixel, but doubled the resolution in Photoshop before my final processing.

Formerly a star like our Sun, it is now just a cloud of ionized gas being pushed out into space by the remnants of the star’s core, visible as a small bright dot in the middle of the cloud. It was discovered by Lewis Swift in early September 1888. It lies close to the 10th magnitude star BD +60° 0631.

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Description: Featured in Astronomy Magazine March 2021.

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Planetary Nebulae

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Status	Basic success
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Astrometry.net job	3834570
PixInsight job	n/a
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IC 289 • Planetary Nebula (My Smallest DSO)

IC 289 • Planetary Nebula (My Smallest DSO)

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IC 289 • Planetary Nebula (My Smallest DSO)

IC 289 • Planetary Nebula (My Smallest DSO)

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