| M16, NGC6616 Eagle Nebula Constellation: Serpens (The Serpent), RA 18h 18.8m DEC -13d 48m Distance: 9,000 light years, Visual Magnitude: 6.0, Diameter: 120 x 25 arc mins Perth end of twilight transit: 7.25pm 8th September, elevation 72 degrees, due North |
| Image #1 - Normal | Image #2 - Ha Filter + Focal Reducer |
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| - Imaged on 20090730 - 250mm, 10" F/4.7 Newtonian Reflector - 500 video frames with 0.6 focal reducer, H-alpha filter at x128 integration - Bahtinov focusing mask - rough polar alignment, 65% moon, ok seeing, elevation about 62 degrees - aligned, stacked and sharpened in Registax 5.0 - levels adjusted in Photoshop 7.0 |