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Pickering's Triangle (or Pickering's Triangular Wisp), brightest at the north central edge of the loop, but visible in photographs continuing toward the central area of the loop. NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.
The visual portion of the Cygnus Loop is known as the Veil Nebula, also called the Cirrus Nebula or the Filamentary Nebula. Several components have separate names and identifiers, [2] [3] including the "Western Veil" or "Witch's Broom", the "Eastern Veil", and Pickering's Triangle.
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This is frequently associated with Pickering's Triangle (see, e.g. Astronomy magazine, or indeed Google search for Pickering+triangle+"NGC+6979"), but the coords usually given for 6979 (and displayed in Uranometria) appear to be closer to 6974 -- and Pickering's Triangle was reputedly discovered only photographically, in the early 1900s. So the ...
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Pickering's Triangle is a section of the Veil Nebula in Cygnus, named after Edward Charles Pickering. Shapley 1 is a planetary nebula in Norma, named after Harlow Shapley. Struve's Lost Nebula is a potentially nonexistent nebula in Taurus, named after Otto Wilhelm von Struve.
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Spelljammer: Adventures in Space is a boxed set for the 5th edition of the Dungeons & Dragons fantasy role-playing game.The boxed set includes three sourcebooks: the Astral Adventurer's Guide (a Spelljammer campaign setting guide), the Light of Xaryxis (an adventure module), and Boo's Astral Menagerie (a bestiary of Wildspace and Astral Sea creatures).