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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: -12° C. - Filter: Luminance |
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Center RA & Dec: 18h 19m 48.962s ... -16° 35' 46.227" Pos Angle: 00-° 49,0' - Scale: 3.5"/Pixel |
Exposure: 12 x 300m seconds |
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Date, Time & Number: 2016.07.09 - 22h 19m 16s U.T.C. |
Location: Roma - (Italy)) |
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Instruments: Refractor Pentax SDUF II 400mm f/4,0 |
Note |
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Photo: Danilo Pivato © Copyright: - Images & texts 2016 - 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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