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IC 63 & IC 59 Gamma Cas Nebula in HaRGB

Technical card

Resolution: 3628x2901

Dates: July 31, 2017Aug. 18, 2017Aug. 19, 2017Aug. 20, 2017

Frames:
Astrodon Blue Tru-Balance E-Series Gen 2: 85x60" -20C bin 1x1
Astrodon Green Tru-Balance E-Series Gen 2: 87x60" -20C bin 1x1
Astrodon Ha 5nm: 121x120" (gain: 139.00) -20C bin 1x1
Astrodon Red Tru-Balance E-Series Gen 2: 86x60" -20C bin 1x1

Integration: 8.3 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 21.78 days

Avg. Moon phase: 21.60%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 1696758

RA center: 14.699 degrees

DEC center: 61.073 degrees

Pixel scale: 0.648 arcsec/pixel

Orientation: 133.429 degrees

Field radius: 0.418 degrees

Locations: Future World Media Home Observatory, Taylor, MI, Michigan, United States

Description

Think it would of taken a lot more integration time in LRGB in my red zone. Very faint.

These bright rims and flowing shapes suggest to some melting ice cream on a cosmic scale. Looking toward the constellation Cassiopeia, the colorful (zoomable) skyscape features the swept back, comet-shaped clouds IC 59 (left) and IC 63. About 600 light-years distant, the clouds aren't actually melting, but they are slowly dissipating under the influence of ionizing ultraviolet radiation from hot,luminous star gamma Cas. Gamma Cas is physically located only 3 to 4 light-years from the nebulae, just off the upper right edge of the frame. In fact, slightly closer to gamma Cas, IC 63 is dominated by red H-alpha light emitted as the ionized hydrogen atoms recombine with electrons. Farther from the star, IC 59 shows proportionally less H-alpha emission but more of the characteristic blue tint of dust reflected star light. The field of view spans about 1 degree or 10 light-years at the estimated distance of gamma Cas and friends.

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Author

Douglas J Struble
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IC 63 & IC 59 Gamma Cas Nebula in HaRGB, Douglas J Struble