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IC 2497 and Hanny's Voorwerp, 


        Albert van Duin
IC 2497 and Hanny's Voorwerp

IC 2497 and Hanny's Voorwerp

Technical card

Resolution: 3318x2488

Dates: Nov. 28, 2016

Frames: 18x600"

Integration: 3.0 hours

Avg. Moon age: 28.62 days

Avg. Moon phase: 0.93% job: 1351986

RA center: 145.266 degrees

DEC center: 34.734 degrees

Pixel scale: 0.615 arcsec/pixel

Orientation: -89.842 degrees

Field radius: 0.354 degrees

Locations: Beilen Observatory B85, Beilen, Drenthe, Netherlands

Data source: Backyard


6 x 600s each for RGB. The small green blob to the left of IC2497 is Hanny's Voorwerp, discovered in 2007 by Dutch school teacher Hanny van Arkel while scanning images of galaxies for the Galaxy Zoo project. It is is a rare type of astronomical object called a quasar ionization echo. The spectrum at top right is probably caused bij 6th magnitude SAO61648, just outside the field.


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Albert van Duin
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Sky plot


IC 2497 and Hanny's Voorwerp, 


        Albert van Duin

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