The Pleiades or "seven sisters" is the finest open cluster in the night sky. Almost lost two sisters on the left. This picture is cropped from the wider version (720x1075, 400k) which is my favorite.
Click the image above for a larger version (1280x1280, 650k).
|Telescope||AP130 @ f4.5 w/AP telecompressor|
|Camera||Canon 350D, Hutech modified type I|
|Exposure||Stack of 28, 5 minute exposures at ISO 800|
|Notes||40°F, 82%rh, good transparancy|
Calibrated with bias, dark and flat frames.
Initial RAW conversion, registration and stacking in IRIS.
Noise reduction in PixInsight LE 1.02 Additional adjustments in Photoshop CS2