B143 dark nebula

Situated 3° ovest of Altair (alpha Aql), near the star Tarazed (Gamma Aql) visible on the left.
 

Technical Data
Optics Pentax 75 apochromatic refractor
Focal Lenght 500 mm
Focal Ratio f/6,7
Exposure Time 45 min exposure
Film Kodak E200
Developement sensibility 320 ISO
Location Capanne di Colola (AL, on the Appennines, Italy) at 1500m
Date and time of exposure start 20 september 2003, 20.28 UT
Mount Gemini G41
Tracking ST-4
Temperature and humidity T=+13°C, RH=77%
Notes -


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