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Crescent Nebula
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==Visibility== The Crescent Nebula is a rather small object located about 2 degrees Southwest of [[Gamma Cygni|Sadr]]. While considered bright by astronomical imaging standards, visually it is relatively faint. For most telescopes it requires a [[UHC filter|UHC or OIII filter]] to see. Under favorable circumstances a telescope as small as 8 cm (with filter) can see its nebulosity. Larger telescopes (20 cm or more) reveal the crescent or a [[Euro]] sign shape which makes some call it the "Euro sign nebula".{{cn|date=April 2025}}
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