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Abell 407 and 'Zwicky's Nonet", 


Abell 407 and 'Zwicky's Nonet"

Abell 407 and 'Zwicky's Nonet"

Technical card

Resolution: 1345x1073

Dates:Dec. 5, 2018Dec. 6, 2018

Astronomik Deep-Sky B: 20x120" bin 4x4
Astronomik Deep-Sky G: 20x120" bin 4x4
Astronomik Deep-Sky R: 20x120" bin 4x4
Astronomik L 3: 65x300" bin 2x2

Integration: 7.4 hours

Avg. Moon age: 28.26 days

Avg. Moon phase: 2.06%

Mean SQM: 20.85 job: 2400935

RA center: 45.486 degrees

DEC center: 35.798 degrees

Pixel scale: 0.934 arcsec/pixel

Orientation: 181.797 degrees

Field radius: 0.223 degrees

Locations: Home Observatory, Poughkeepsie, New York, United States

Data source: Backyard


The central region of Abell 407 galaxy cluster about one hour East of Triangulum. My fov isn't quite big enough for all of it.

What caught my interest, and prompted this shot, is the tight group of 9 elipticals in the process of merging into a monster with fire breathing radio jets. The authors of the study linked below proposed naming the group 'Zwicky's Nonet'. They say Fritz Zwicky "noticed" it (not discovered, hmmm) in 1971. The study is excruciatingly detailed but also has some radio frequency pics of the jets.

Study is titled... ‘Zwicky’s Nonet’: a compact merging ensemble of nine galaxies
and 4C 35.06, a peculiar radio galaxy with dancing radio jets



License: None (All rights reserved)

Sky plot

Sky plot


Abell 407 and 'Zwicky's Nonet",