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Friday, September 18, 2009
NGC 6888 in HST-palette
![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgGciUGlNcmumjSqxA2k07aPPusr0KyCoBuRfC03kHZQUU9bcBpPA_J1LHpp_mrkxyPqxt_iI_i8i-WZ4bvnL2a7LBMpE5WTebs0Vouv0K-_bXg4QQW7ieKLWZ964Ep_u4_40yZtYlb9bI/s640/NGC6888_MediumHSTpalette.jpg)
Last night I got S-II (ionized Sulfur) for the NGC 6888, the Crescent Nebula.
Now it was possible to compose a HST version (Hubble Space Telescope palette).
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Camera QHY9,
Optics Meade LX200 GPS 12" forced to @ f4.65
Guiding with SXV-AO active optics unit 11Hz
Filters
Baader H-alpha 7nm, 4.5h 20min subs
Baader O-III 8,5nm 2h 40min 20min subs binned 2x2
S-II 1h 5 min subs binned 3x3
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Note. a special technique of mine is used to balance weaker channels with Hydrogen alpha.
Information about that tech. can be found HERE
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