NGC 4236 is a barred spiral galaxy in the constellation Draco and an outlying member of the M81 Group of galaxies, located roughly 12-15 million light-years away (estimates in the literature range from about 11.7 to 21 million light-years).

NGC 4236
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NGC 4236 is a barred spiral galaxy in the constellation Draco and an outlying member of the M81 Group of galaxies, located roughly 12-15 million light-years away (estimates in the literature range from about 11.7 to 21 million light-years). Despite spanning nearly 100,000 light-years, a size comparable to the Milky Way, it is classified as a low surface brightness galaxy, with its stars and star-forming regions spread thinly across an elongated disk rather than concentrated in a bright nucleus. This gives it a large apparent size on the sky (over 20 arcminutes) but a deceptively faint, diffuse look visually. It is a challenging target for astrophotographers, requiring long integration to reveal the mottled star-forming clumps along its bar and the faint traces of its spiral disk.

[Source: Wikipedia, en.wikipedia.org/wiki/NGC_4236]

Moon PhaseNew Moon
CameraToupTek ATR2600C
OpticsSkywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet)
Date2025-05-28
PixInsight Processing
Image Integration (x2)
Drizzle Integration
Background Neutralization
Automatic Background Extraction
Dynamic Background Extraction
BlurXTerminator (AI deconvolution) (x2)
NoiseXTerminator (AI denoise)
Generalized Hyperbolic Stretch (x4)
Curves Transformation (x2)
HDR Multiscale Transform
SCNR