This dataset captures NGC 225, commonly known as the Sailboat Cluster, an open star cluster in Cassiopeia. The data spans three nights from September 27 to September 29, 2025, accumulating 17.6 hours of total integration time. The imaging setup employed an Askar 151PHQ telescope paired with a ZWO ASI2600MM Pro monochrome camera, mounted on an iOptron HAE69. The acquisition comprises 527 frames across four channels: 258 luminance exposures at 120 seconds each, plus 90 green, 92 blue, and 87 red frames, all using Antlia 2.00 inch filters. This LRGB dataset provides comprehensive coverage for producing a detailed colour composite of this relatively faint cluster. The files are available as a free download under a CC BY-NC 4.0 license, permitting copying, modification and redistribution for non-commercial purposes.
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