Telescope : SW Esprit 100ED
Mount : SW Wave 150i
Camera : ZWO 533mc
Guiding :Zwo 120mono with Touptek oag
Filters: Total exposure time :8hours & 25minutes with SVBONY 220 7nm 2"
Programs I have used : ZWO AsiAir & PixInsight 1.9.3
From 2 night's 18/2/26, 19/2/26
The Medusa Nebula (Abell 21) is an ancient planetary nebula located roughly 1,500 light-years away in the Gemini constellation. Often paired in wide-field astrophotography with the nearby open cluster NGC 2395 (located about
away), the nebula spans over 4 light-years, showcasing, filaments of gas, and a hot, central, bluish star.
Key Details about the Pair:
- Medusa Nebula (Abell 21/Sh2-274): A large, old planetary nebula, it gets its name from filaments resembling snakes. Its shape is often likened to a crescent or jellyfish, featuring emission from ionized gases (OIII and Ha).
- NGC 2395: A loose open cluster of stars situated near the Medusa Nebula, often included in the same field of view for astrophotography.
- Location: Situated in the constellation Gemini, making it a popular winter target for observing and imaging.
The
Medusa Nebula is known for being quite faint, requiring long exposure
times or large apertures to observe its detailed structure, which is
often enhanced by the nearby backdrop of NGC 2395.
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