Celestial hemisphere:  Northern  ·  Constellation: Perseus (Per)  ·  Contains:  NGC 1491
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NGC 1491 / Sh2-206 / LBN704, John Kulin
NGC 1491 / Sh2-206 / LBN704
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NGC 1491 / Sh2-206 / LBN704

Getting plate-solving status, please wait...
NGC 1491 / Sh2-206 / LBN704, John Kulin
NGC 1491 / Sh2-206 / LBN704
Powered byPixInsight

NGC 1491 / Sh2-206 / LBN704

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Description

Where to start, well the acquisition of this has been testing to say the least, I have had to throw away over 20 hours of data...why...because I am too clumsy and keep knocking the rotation of my camera!

Its quite tight inside my observatory and I never noticed that I was knocking the camera, as I am imaging at over 2000mm it makes a big difference and wouldn't have been so important if I was imaging wide-field.

So having started this in November, I finally captured the last frame on 25th January.

All processed in Pixinsight, the WBPP script failed, so it was back to manually processing completely, which was great because sometimes you can become too lazy.

From Bortle 5/6 Skies, I am happy how it has turned out and I am glad I persevered.

Now for the Bumf: -

NGC 1491 (also designated SH2-206 and LBN 704) is a bright emission nebula and HII region, located on the edge of a vast cloud region of neutral gas, about 10,700 light-years away in the Perseus arm of our Milky Way Galaxy in the constellation Perseus.

HII regions are well known for being places where new stars are born, and are created when ultraviolet radiation from hot stars ionizes the surrounding gas, causing it to glow in visible light. The surrounding dust is also heated by this radiation, so we also see it glow in infrared light.

The blue 11.22 magnitude star (BD +50 ° 886) is illuminating the nebula while its strong stellar wind is “blowing” a bubble in the gas that immediately surrounds it. The intense radiation from the star is also eroding the gas clouds surrounding it.

The entire nebula is quite irregular with a subtle bite cut out of the nebulosity from the east side that creates a darker hollow, and a high surface brightness region — as seen in this image — preceding the star. A faint, elongated haze extends from this patch to the north-east past the star giving an elongated appearance.

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  • NGC 1491 / Sh2-206 / LBN704, John Kulin
    Original
  • Final
    NGC 1491 / Sh2-206 / LBN704, John Kulin
    B

B

Description: Just tweaked a little with fresh eyes :-)

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NGC 1491 / Sh2-206 / LBN704, John Kulin