Fig. 1.
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Open cluster NGC 2818A. A 450 × 450 arcsec2 colour-composite RGB image of the cluster NGC 2818A. Red is Hα, Green is short-red (SR) and Blue is broad-band blue as extracted from the UK Schmidt Telescope SuperCOSMOS Hα Survey (SHS; Parker et al. 2005) through the Hong Kong/AAO/Strasbourg Hα (HASH) planetary nebula database (Parker et al. 2016). The PN NGC 2818, can be clearly seen on the west side of the cluster’s apparent centre.
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