Emission Nebula IC434
& Dark Nebula B33
“Horsehead Nebula”

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<Image : Horsehead Nebula>
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<<Photography Data>>
Date:October 12th, 2002.
Location: Johoku, Ibaraki, Japan.
SIGMA APO TELE MACRO 300mm F4.0 lens (diaphragm F4.0)
Vixen GP·D equatorial mount
automatically guided with D80mm f560mm refractor + ST-V
BITRAN cooled CCD camera BJ-41L(-8.0 °C)
IDAS Type Ⅲ RGB separation filter
R,G and B images were taken with 2×2 binning
exposure: L;10min. ×7 frames + 15min. ×2 frames
R,G and B;5 min. ×2 frames each
LRGB composition (total exposure time : 130min.)
Image processed with StellaImage3 & The GIMP.

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