Contains: IC 417, The star φAur
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IC 417 The Spider Nebula in the Hubble Palette

Technical card

Resolution: 4088x3270

Dates: Dec. 31, 2017Jan. 5, 2018Jan. 6, 2018

Astrodon Ha 5nm: 81x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 77x240" (gain: 139.00) -20C bin 1x1
Astrodon SII 3nm: 75x240" (gain: 139.00) -20C bin 1x1

Integration: 15.5 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 17.07 days

Avg. Moon phase: 85.01%

Bortle Dark-Sky Scale: 6.00 job: 1880866

RA center: 82.080 degrees

DEC center: 34.416 degrees

Pixel scale: 0.650 arcsec/pixel

Orientation: 93.659 degrees

Field radius: 0.472 degrees

Locations: Backyard Red Zone Observatory, Taylor, MI, Michigan, United States


The spider part of 'The Spider and the Fly' nebulae. Located in the constellation Auriga, IC 417 lies about 10,000 light-years away. It is in the outer part of the Milky Way, almost exactly in the opposite direction from the galactic center.



Douglas J Struble

Sky plot

Sky plot


IC 417 The Spider Nebula in the Hubble Palette, 


        Douglas J Struble