M16 in H-alpha
Image of M16, the Eagle Nebula taken with an H-Alpha filter which shows the glowing hydrogen gas very well. To my eye this nebula looks more like a crab than an eagle but perhaps one that has eaten an eagle which can still be seen in its middle.
2010-08-11/12 in backyard in Victoria.
Conditions - clear and 12deg C with some thin mist.
Equipment - H Alpha filtered Canon T1i (modified) on 105mm refractor with 0.8x reducer on HEQ5 mount.
Exposure - 75- 60s lights at ISO 3200 with 25 darks and 8 flats for calibration.
Processing in Images Plus and Photoshop.