Fig. 2
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Hα image mosaic obtained at CHILESCOPE with a linear gray-scale mapping with surface brightness from zero to 1.5 10−16 erg cm−2 s−1 arcsec−1. The stellar limiting magnitude is about Gaia RP ≈ 21m. 8. The round nebula southwards is not related to our target but the beforehand known planetary nebula StDr 47 (PN G253.7+19.4, 09h27m31s. 46, −23°22′34″.40).
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