NGC1491 Fossil Footprint Nebula in Perseus

            NGC 1491 is called the Fossil Footprint Nebula. It is a bright emission nebula and hydrogen (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 bright, blue star near the centre 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 that creates a darker hollow, and a high surface brightness region as seen in this image. A faint, elongated haze extends from this patch past the star, giving an elongated appearance.

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Telescope: Celestron C11-A XLT Schmidt Cassegrain OTA
Mount: SkyWatcher EQ6-R Pro
 
Controller: ZWO ASIAIR Plus 256G
Main Camera: ZWO ASI533MC Pro at -10C
Filter: Optolong L-eNhance filter
Focuser: ZWO EAF
Guide Camera: ZWO ASI174MM Mini guidecam
Guide via: ZWO OAG
 
Stacked from:
Lights 63 at 120 seconds, gain 101, temp -10C
Darks 30 at 120 seconds, gain 101, temp -10C
Flats 30 at 6.5 seconds, gain 101, temp -10C
Dark Flats 30 at 6.5 seconds gain 101 temp -10C
 
Bortle 4 sky.
Integrated the saved frames in Astro Pixel Processor.
Processed in PixInsight
Added captions in Photoshop CS4



   

Taken on: August 29, 2024

Tags:

ngc1491

fossil

nebula

zwo

zwoasi533mcpro

zwoasiairplus

zwoefw5mini

zwooag

asi174mm

asi174mmmini

Asi533mc

asi533mcpro

asiairplus

c11

c11-a

c11a-xlt

Celestron

SkyWatcher

EQ6-R

eq6r-pro

astronomy

astrophotography

astrophoto

astropixelprocessor

pixinsight « less

Sets appears in: • Astronomy • Nebulae

Groups appears in: • Astrophotography - Astronomy - Astrophysics • astrometry more » • BBC Sky at Night and Stargazing Live • Amateur Astro-Photography « less

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