M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye) (Tim Hawkes)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: M 94 · NGC 4736

M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye), Tim Hawkes

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M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye)

Powered byPixInsight

M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye)

Capture was using Sharpcap. 138 plus 125 x 40s OSC camera exposures on moonless nights under Bortle 6-7 urban skies using an F 4 , 300 mm VX12 Newtonian. The sharper FWHM ~ 2) luminance of 793 x 3s mono camera exposures was blended into just the bright galaxy core using a HDRC with the luminance of the 263 x 40s expsures in PixInsight. The image was further processed in PixInsight and using RC Astro BlurXterminator deconvolution of the 793 x3s image.

Messier 94 is a spiral galaxy in Canes Venatici, is ~ 17M ly away, about 4500ly across and contains about 40 billion stars. Small compared to the milky way it is nevertheless one of the largest galaxies in the so-called M94 group of galaxies - which as our local group - is part of the Virgo supercluster.

M94 is classified as having a low ionization nuclear emission region (LINER) nucleus meaning that its optical spectrum indicates that ionized gas is present at the nucleus but that this gas is only weakly ionized. M94 has a double ring structure wherein the inner ring has a diameter of about 5,400 ly and the outer about 45,000 ly. The inner ring is a starburst ring with lots of star formation activity fueled by gas that is driven dynamically into the ring by the inner oval-shaped bar-like core structure of the nucleus . The outer ring is not a closed stellar ring as appears optically but in fact a complex structure of spiral arms when viewed in mid-IR and UV. The outer disk is also actively forming stars and comprises approximately 23% of the galaxy's total stellar mass. The outer disk may have arisen via accretion of a satellite galaxy or, as seems more likely from recent modelling, it may have arisen from distortion of the inner disk.

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Status	Basic success
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Astrometry.net job	6973878
PixInsight job	n/a
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M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye)

M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye)

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M94. Newtonian view of the crocodile's eye. (M94. Newtonian view of the crocodile's eye)

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