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7635 - Bubble Nebula (image is
reduced-size | other sizes: medium
7,100 to 11,000 light years
||Takahashi TOA-130F @ f/7.7
||Takahashi EM200 Temma II
||QSI 540wsg @ -15C
|| Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen
||12x10min Ha, 3x10min L (bin1x1);
4x5min ea RGB
(bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
|3 September 2017 - Las Cruces, NM
Published in BBC
Sky at Night Magazine, Feb 2018 issue (PRINT), pg 31 (photo).
Published as Astronomy Magazine Picture of the Day, 15 Dec
Published as Space.com "100
Most Amazing Space Photos of 2017" (screenshot).
Published as Space.com "Space
Image of the Day":
- 28 Nov 17 slot (screenshot)
This image is LHaRGB, where Ha was used in combination with Luminance and
Ha:R (80:20) was used for the Red channel.
Copyright Jeffrey O. Johnson