Observation by Peter Goodhew FRAS: Arp 104 - Keenan's System

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Peter Goodhew FRAS

Observer

Peter Goodhew FRAS

Observed

2020 May 01 - 07:39

Uploaded

2020 May 05 - 07:42

Objects

Keenan's System (Arp 104)
NGC5216
NGC5218

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Constellation

Ursa Major

Field centre

RA: 13h31m
Dec: +62°40'
Position angle: -6°51'

Field size

0°37' × 0°24'

Equipment
  • APM TMB 152 LZOS Refractors
  • 10Micron GM2000 HPS mount
  • QSI6120wsg8 cameras
Exposure

Astrodon Blue: 16x300" Astrodon Green: 17x300" Astrodon Red: 18x300" Astrodon Luminance: 81x600" Total Integration: 17.8 hour

Location

Fregenal de la Sierra, Spain

Target name

Arp 104 - Keenan's System

Title

Arp 104 - Keenan's System

About this image

Arp 104, also known as Keenan's System, is a pair of gravitationally interacting galaxies (NGC 5216 and 5218). It was first noted by William Herschel in 1790. It is located in the constellation Ursa Major at a distance of about 17 million light-years from Earth. The connecting string of gas, dust and stars between the galaxies is about 22,000 light-years long. Also in this field of view is a large collection of other small and medium galaxies.

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