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The open cluster in the large cavity below centre is NGC 1761. Nebulae NGC 1760, 1769, and NGC 1773 surround the cavity. The exquisite supernova remnant N11, looking reminiscent of Thor's Helmet, is at 3 o'clock and halfway to the right border.
3nM H-alpha, 8hrs in 1hr subs. Aspen CG16M on 20" PlaneWave. Processing using our GoodLook 64.
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