OBJECT |
Elephant's
Trunk Nebula in IC 1396 (top image is reduced-size | other
sizes: medium , original)
Bottom image is an "Ha-only"
view
Distance:
3,000 light years |
Telescope |
Takahashi FS-60C @ f/6.2 |
Mount |
Takahashi EM200 Temma II |
Camera |
QSI 540wsg @ -10C |
Filters |
Astrodon Ha (3nm), Astrodon Tru-Balance I-Series LRGB Gen
2 |
Guider |
SX Lodestar |
Settings |
9x20min Ha, 4x5min L (bin1x1); 4x5min
ea RGB (bin2x2); AstroArt5, CS4 (slightly cropped, 10xdarks/flats/fdarks/bias) |
Date/Location
Notes |
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
channel. |
Copyright Jeffrey O. Johnson
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