LBN 310 and Surrounding Nebulosity, Wide Field

The elongated patches of emission nebulae near the image's center are designated LBN 278, LBN 301, LBN 310, LBN 313, LBN 325, LBN 326 and LBN 335 in Lynd's Bright Nebulae (LBN) catalog. They are large and extremely faint emission nebulae located in Cygnus, 4.5 degrees straight west of Deneb, the constellation's brightest star. They belong to a huge nebulae complex which also includes the γ Cygni Nebula Region and the NGC 6914 and vdB132 Region, which are located near the lower left corner of this image. The bright star just outside the lower edge is γ Cygni (Sadr).

The curved appearance and filamentary structure of these nebulae imply that they were formed by a supernova which may have exploded somewhere to the east (left) of this picture.

LBN 242 and Surrounding Nebulosity, Western Cygnus, telelens photograph.

Exposure Data

Instrument: Nikkor-Q Auto 135mm f/2.8 telephoto lens
F/stop: 5.6
Exposure: 14 x 10 min
Camera: Canon 350D with Baader UV-IR-Cut-Filter
Sensitivity: ISO 800
Date: September 21, 2009
Exposure start: 21:01 MESZ
Location: Oberst Klinke Hütte, Styria
Conditions: Visual limiting magnitude 6.3 mag, seeing 4/10, temperature 11°C, no wind, high humidity
Autoguider: Meade Pictor 216 XT, max. error: 1" (RA) / 2" (Dec);
Enhancement: Basic data reduction, combine, logarithmic curves, color correction, star size reduction, noise filtering, local contrast enhancement
Notes: Image taken during my stay at the Ennstaler Alps in September 2009. See an Observation Report of this event (in German).