Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  IC 1590  ·  NGC 281
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Pacman SHO with RGB stars, Luigi
Pacman SHO with RGB stars
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Pacman SHO with RGB stars

Getting plate-solving status, please wait...
Pacman SHO with RGB stars, Luigi
Pacman SHO with RGB stars
Powered byPixInsight

Pacman SHO with RGB stars

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Description

Pacman from Bortle 7/8 sky with Narrow Band filters (and RGB stars).  12 Observing sessions from Sept.3, 2020 to Nov.9, 2020.  Color rendition of NB  seems to match the expected  ionization status of the gas, photoionized by the central O-B complex, with OIII (highest ionization) dominating closer to the stars, then Ha and SII at larger distances ( although some of the SII ionization could be due to wind-driven shocks (as suggested by the detection of diffuse X-ray emission by Chandra)). Ihave doubled the integration time of SII so to get a decent signal as compared to Ha.
Total of 30 hours (NB:18 hrs, RGB:12 hrs)

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