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Reflection nebulae NGC 6914, VdB131 and VdB 132 in Cygnus

LRGB combination (Click for a larger view 1800 x 1800 px)

Mouse over to see identifications of objects (see info below)

NGC 6914-Vdb132-Vdb131

 

Variable star V1515 Syg - 200% crop

Details

Reflection nebulae NGC 6914, VdB131 and VdB 132 in Cygnus

NGC 6914 is a complex of emission and reflection clouds. NGC 6194 is the blue reflection nebula at the upper middle, vdB 132 the one in the center and the lower one of the three reflection nebulae is vdB 131. The complex of nebulae lies some 6000 light-years away, toward the constellation Cygnus. Ultraviolet radiation from the massive, hot, young stars of the extensive Cygnus OB2 association ionize the region's atomic hydrogen gas, producing the characteristic red glow as protons and electrons recombine.

The catalog name of the peculiar star at the down right of the image is V1515 Cyg. This is a variable star of FU Ori type. Since 1958 the star is in its maximum with slow light variations about <= 1.6m. These stars are characterized by gradual increases in brightness by about 6 mag in several months, followed by either almost complete constancy at maximum that is sustained for long periods of time or slow decline by 1-2 mag. These variables probably mark one of the evolutionary stages of T Tauri-type Orion variables, as evidenced by an outburst of one member. All presently known FU Ori variables are coupled with reflecting cometary nebulae. (info SIMBAD)

North is up. The Horizontal FOV is about 30' (slight crop from original FOV). The image almost centered at:

Right Ascension 20 : 24.7 (h:m)
Declination +42 : 29 (deg:m)
Distance 6.0 (kly)
Brightness -(mag)
Apparent Dimension

- (arc min)

Seeing: Pickering 7 rating - Good
Optic(s): RC 12" with Astro-Physics corrector @ f/5
Mount: ASA DDM85 Premium
Camera: ATIK 4000 - monochrome CCD – 2048 x 2048 px ; 16x16 mm; 7.4 µm x 7.4 µm
Filters: Astronomik L, R, G, B set, SupaSlim TrueTechnology Computerized Filter Wheel
Dates/Times: 2012-08-15
Location: Rozhen Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exposure Details:

L=60 min, R = 60 min, G = 60 min, B = 60 min (Bin 1), subs. 10 min, Total Exposure Time - 240 min

More details: Dark and flat frames reduction
Guiding: All subexposures are unguided
Processing:

PixInsight / PS

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All Contents copyright Velimir Popov unless otherwise noted.