The Bow Tie Nebula - NGC 40
Taken by Tom Wildoner on October 27, 2025 @
Weatherly, PA, USA
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Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: 2025:12:21 12:39:08
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Details:
NGC 40 is a planetary nebula located in the constellation Cepheus, roughly 3,500 light-years from Earth. It is commonly known as the Bow Tie Nebula because of its distinctive, two-lobed shape. NGC 40 was formed when a dying Sun-like star shed its outer layers, which are now glowing as they are energized by the hot central star. That central star is a rare Wolf–Rayet–type star, producing strong stellar winds that help sculpt the nebula’s shape. NGC 40 is relatively bright for a planetary nebula and is an important object for studying how intense stellar winds and late-stage stellar evolution shape nebular structures.
Observation data: J2000 epoch
Right ascension: 00h 13m 01.017s
Declination: +72° 31′ 19.03″
Distance: 3,500 ly
Apparent magnitude (V): 11.6
Apparent dimensions (V): 38″ × 35″
Constellation: Cepheus
Designations: Bow-Tie Nebula, Caldwell 2
Tech Specs: Meade 12” LX-90 SCT Telescope, Antares Focal Reducer, ZWO ASI2600MC camera running at -10F, 164 x 60 seconds, Celestron CGX-L pier mounted, ZWO EAF and ASIAir Pro, processed in DSS and PixInsight. Image Date: October 27, 2025. Location: The Dark Side Observatory (W59), Weatherly, PA, USA (Bortle Class 4).
Photographer's website:
https://www.thedarksideobservatory.com
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