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The Seagull Nebula (IC 2177) is a vast and graceful emission nebula stretching across the border of the constellations Monoceros and Canis Major. Shaped strikingly like a seabird in flight, its sweeping “wings” span nearly 100 light-years, glowing softly with deep reds from ionized hydrogen gas energized by nearby young, hot stars.
At the heart of the nebula lies the brighter region NGC 2327, where active star formation is taking place. Embedded stellar nurseries sculpt the surrounding gas and dust into flowing arcs and dark lanes, giving the Seagull its dynamic, windswept appearance. Subtle blue reflections and intricate filaments add depth and contrast to the dominant crimson glow.
Located approximately 3,800 light-years from Earth, IC 2177 is a favorite target for wide-field astrophotography, revealing delicate structures that are often invisible visually. The Seagull Nebula stands as a serene yet powerful portrait of stellar creation, frozen mid-flight against the rich backdrop of the Milky Way.
Technical Details
Telescope: Sky-Watcher Esprit 100ED Refractor
Auto Focus: ZWO Electronic Auto Focuser
Astronomy Camera: ZWO ASI071MC Pro
Filter: Optolong UV-IR cut filter; 180 exposures @ 60 seconds each (3 hours)
Filter: Antlia ALP-T Dual Narrowband Ha/Oiii Filter; 150 exposures @ 5 minutes each (13 hours)
Total Integration Time: 16 hours
Auto Guiding: William Optics Uniguide 50mm Guide Scope
Auto Guiding Camera: ZWO ASI120MM Mini Guide Camera
Auto Guiding Software: PHD2
Telescope Mount: Celestron CGX Equatorial Mount
Telescope Computer: BeeLink GK-55 Mini PC / Windows 10 Pro
Wireless Communication: GL-iNEt Beryl Travel Router
Telescope Control & Image Capture Software: Nighttime Imaging ‘N’ Astronomy (N.I.N.A.)
Image Integration Software: Astro Pixel Process, by Aries Productions
Image Post Processing Software: PixInsight, by Pleiades Astrophoto
Images captured: Palm Springs, CA during February 2025. Dark sky classification = Bright suburban sky (Bortle 6)