Description
Open Star Cluster NGC 6530 embedded in an Emission Nebula (Lagoon Nebula) in the constellation Archer (Sgr)
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Date |
July 15, 17 & 19, 2006 |
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Telescope |
Pentax 75 SDHF @f/6.7 (f=500mm), Losmandy G11 mount, FS2 drive unit |
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CCD Camera |
ST-2000XM at -15°C |
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Exposure |
LRGB; L = Hα + Red (80%:20%); R = Red + Hα (20%:80%).Hα: 19x600s (1x1); Red: 8x300s (2x2); Green: 5x300s (2x2); Blue: 8x300s |
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Localisation |
Hofheim / Rhein-Main area |
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Conditions |
Average conditions, light pollution, object very close to horizon |
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Note |
HαRGB exposure (above), Hα exposure (below) |
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Image Processing |
Full calibration, pre-processing with MaxIm, final processing with Photoshop |
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© Copyright 2002-2007 by Jürgen Stein |