LDN 673 and neighborhood

Click on the image for a high res version.

The constellation of Aquila is filled with dark nebulas standing in front of the Milky Way. This field shows the intricate LDN 673, and many others, like LDN 682 (center-left) and LDN 684 (left); LDN676, 677, 675 and 686 are smaller and spreaded all over the image. The bright star at top-center is Omega2 Aql.

Technical Data
Optics TEC 140
Focal Length
1011 mm
Focal Ratio f/7.2
Exposure Time 5 h 20 min (single exp of 10 min), L-RGB 140:50:50:80 min
CCD SBIG STL-11000M @-25°C
Location Colle dell'Agnello (CN, Italian Alps) at 2700 m height
Date
5 August 2013
Mount Gemini G-41
Tracking Lodestar on an 80mm f/5 refractor
Temperature and humidity T= +12 °C, RH=48%
Sky brightness at zenith (with SQM-L) 21.7 mag/arcsec^2
Notes North at left. Really dark night thanks to the clouds on the Po Valley in Piedmont.


HTML Editing and Publishing by Lorenzo Comolli. Email me at comolli@libero.it.
Back to Main Page