One of the most colorful areas in the night sky this region in Ophiuchus and Scorpio is a fantastic collection of emmission, reflection, and dark nebulas. This photograph is a 12 by 8 degree area captured using a 100mm lens.
Click image for larger version (1440x964, 760kb).
For an interesting video tour of the Rho Ophiuchi cloud in 720p HD see the Spitzer website (warning: link to large Quicktime movie file, 64mb).
|Location||Flint Hills of Kansas|
|Lens||Canon 100mm f2.8 Macro (non-USM) @ f2.8|
|Camera||Canon 350D, Hutech modified type I|
|Exposure||composition of 28, 2 minute exposures at ISO 800|
|Notes||Excellent transparancy, temperature around 65°F, good seeing.|
Calibrated with bias, dark and flat frames.
Initial RAW conversion, registration and stacking in IRIS.
Noise reduction in PixInsight LE 1.02 Processing in Photoshop CS2