IC59 and IC63 two nearby arc-shaped nebula associated with the extremely luminous star Gamma Cassiopeia. They are a combination of emission and reflection nebula.
IC59, centered just 20′ north of Gamma Cassiopeia, is very faint, diffuse, and elongated N-S. It is primarily a reflection nebula, appearing blue in photographs because it scatters starlight. It appears larger but fainter than IC63. Together, IC59 and IC63 are designated as Sh2-185.
About 600 light years away, the intense bath of radiation from Gamma Cassiopeia is evaporating its two nearby neighbors. The leading edges of IC59 and IC63 glow strongly, hinting that these clouds will soon be blown away into the interstellar medium.
(quoted from SkySaffari6)
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| Date and Place |
2021-Nov-25, 26, 27, 29 |
| Scope | Takahashi Epsilon180ED + BetaSGR Focuser |
| Mount | Skywatcher EQ8 |
| Camera | ZWO ASI6200MM-Pro : -15[deg-c] |
| Auto guiding | QHY mini guide scope + ZWO ASI120 |
| Filter |
Astrodon Tru-balance Gen.2 E-series LRGB Filter |
| Exposure | Epsilon180ED + ASI6200MM-Pro L : 17×600[s], R : 8×600[s], G :8×600[s], B : 8×600[s] , Ha: 14×900[s] Total :620[min] = 10.3[hr] |
| Software |
Astroart8 with SHS Version 7.6 Build 89 |