Abell 4 (Planetary nebula)
R/B-band color composite image from the Second Digitized Sky Survey (DSS2), measuring 10 arcminutes across.
Finder chart
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From Cambridge , Abell 4 is visible in the evening sky, becoming accessible around 17:27 (EST), 37° above your north-eastern horizon, as dusk fades to darkness. It will then reach its highest point in the sky at 22:23, 89° above your northern horizon. It will continue to be observable until around 04:57, when it sinks below 21° above your north-western horizon.
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Name
Abell 4
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Object type
Planetary nebula
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Visibility from Cambridge
All times shown in Cambridge local time.