Trunk Nebula in IC 1396 (top image is reduced-size | other
sizes: medium , original)
Bottom image is an "Ha-only"
3,000 light years
||Takahashi FS-60C @ f/6.2
||Takahashi EM200 Temma II
||QSI 540wsg @ -10C
|| Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen
||9x20min Ha, 4x5min L (bin1x1); 4x5min
ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias)
|13 October 2015 - Las Cruces, NM
Published as Astronomy Magazine Picture of the Day,
11 Feb 16 (screenshot).
This image is LHaRGB, including 3 hours of Ha data, where Ha was
used in combination with Luminance and Ha:R (80:20) was used for the Red
Copyright Jeffrey O. Johnson