Contains: NGC 3628, M 66, NGC 3627, M 65, NGC 3623
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The Leo Triplet

Technical card

Imaging telescope or lens: Takahashi FSQ 106 EDX III

Imaging camera: QSI 683 WSG8

Mount: Paramount MyT

Guiding telescope or lens: Takahashi FSQ 106 EDX III

Guiding camera: QSI 683 WSG8

Software: PixInsight

Filter: Astrodon LRGB CCD Gen II E-Series

Resolution: 1600x1346

Dates: April 14, 2016

Frames: 32x900"

Integration: 8.0 hours

Avg. Moon age: 7.70 days

Avg. Moon phase: 53.36% job: 1084001

RA center: 170.041 degrees

DEC center: 13.282 degrees

Pixel scale: 3.453 arcsec/pixel

Orientation: -90.251 degrees

Field radius: 1.003 degrees

Locations: Deep Sky West Observatory, Rowe, MN, United States


The Leo Triplet, a well known trio of beautiful galaxies - M65, M66 and NGC3828. Actually, there are many more tiny galaxies in this image. All of them belong to the M66 Galaxy Group with the Leo Triplet at its heart. In this deep exposure you also see the tidal tail extending from the edge of NGC3628, a result of a gravitational interaction with the other galaxies. The structure has a length of about 300000 light-years and is not fully captured in this frame.

The image is an LRGB composite of data taken at the Deep Sky West Observatory. I have enhanced the tidal tail relative to the galaxies, otherwise processing was pretty standard.





Sky plot

Sky plot


The Leo Triplet,