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Object: M18 (NGC6613) & M17 (NGC6618) open cluster & galactic nebula in Sagittarius in H-Alpha |
Sensor: Ccd SBIG St-10XME - Bin: 1x1 - T: -03° C. - Filter: H - Alpha |
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Center RA & Dec: 18h 18m 00.823s ... -16° 34' 24.219" Pos Angle: +00° 52,1' - Scale: 4.675"/Pixel |
Exposure: 6 x 1800m seconds |
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Date, Time & Number: 2015.08.03 - 20h 04m 55s U.T.C. |
Location: Roma - (Italy)) |
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Instruments: Telelens Nikon 300mm f/2,8 @ f/5,6 |
Note |
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Photo: Danilo Pivato © Copyright: - Images & texts 2015 - All rights reserved |
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Map |
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The Photographic History of the M18 Open Cluster through different focal lengths |
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Focal Length 50mm |
Focal Length 100mm |
Focal Length 200mm |
Focal Length 300mm |
Focal Length 400mm |
Focal Length 500mm |
Focal Length 600mm |
Focal Length 760mm |
Focal Length 1268mm |
Focal Length 2100mm |
Focal Length 2910mm |
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