NGC 6914 and vdB 132 Region

NGC 6914, vdB 132

These nebulae form the northern part of the γ Cygni nebulae. NGC 6914 is the name of the blue combined emission/reflection nebula around three stars near the center of the image, van den Bergh 132 designates the central one. Most of the other large red emission nebula patches in this image seem to belong to a huge supernova shell located in the next inner spiral arm of our galaxy. They are extremly faint. The nice colors of this attractive region remind on the Rho Ophiuchus Nebula Complex Region.

NGC 6914 and vdB 132, Wright-Newtonian Hα CCD image, which is part of this image.

γ Cygni Nebula Region, telelens photograph.
LBN 310 and Surrounding Nebulosity, Wide Field, telelens photograph.
NGC 6914 and vdB 132, Newtonian photograph.

Exposure Data

Instrument: 4.9" f/3.8 Wright-Newtonian
F/stop: 3.8
Exposure: RGB: 9 x 10 min + 2 min / Hα: 30 x 10 min + 2 min
Camera: ALccd 6c Pro = QHY8pro
Offset/Gain/Temp: 125 / 50% / -10°C
Date: RGB: August 18, 2009 / Hα: August 20, 2009
Exposure start: RGB: 22:47 MESZ / Hα: 22:35 MESZ
Location: RGB: Ebenwaldhöhe, Lower Austria / Hα: Floridsdorf, Vienna
Conditions: RGB: Visual limiting magnitude 6.0 mag, seeing 8/10, temperature 15.5°C, no wind, high humidity / Hα: Visual limiting magnitude 4.3 mag, seeing 3/10, temperature 22°C, no wind, no dew
Autoguider: Meade Pictor 216 XT, max. error: 1" (RA) / 1" (Dec);
Enhancement: Basic data reduction, combine, logarithmic curves, color correction, noise filtering, background flattening, star size reduction, dynamic range extension, local contrast enhancement, HαRGB composition
Notes: Extremely long Hα exposure series. I trusted the autoguider and let it run unattended until dawn under a mediocre city sky. Stars near the left edge of this image are distorted because of imperfect collimation of the optics.

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