The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. Its name means 'divided into three lobes'. The object is an unusual combination of an open cluster of stars, an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent 'gaps' within the emission nebula that cause the trifid appearance, it is around 2000-9000 light years away and about 16 light years in diameter.&lt;br /&gt;
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Processed using HST palette Red=Sii Green=Ha Blue=Oiii.&lt;br /&gt;
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Captured using:&lt;br /&gt;
Camera: QHY9 CCD (mono KAF 8300 chip) as main and QHY5 as guide|&lt;br /&gt;
Filters: SII 8nm (6x25min), Ha 7nm (3x20min), OIII 8.5nm (9x20min)|&lt;br /&gt;
Captured using Nebulosity 2 and PHD for guiding|&lt;br /&gt;
Scope: WO FLT-110 Triplet f/7|&lt;br /&gt;
Mount: HEQ5 Pro|&lt;br /&gt;
QHY Filter Wheel 2&quot;|&lt;br /&gt;
Processed: IP v3.75 and PS-C3|