Observation by Kevin Gurney: Near and far

Uploaded by

Kevin Gurney

Observer

Kevin Gurney

Observed

2022 Sep 06 - 23:26

Uploaded

2022 Sep 11 - 12:39

Objects

Arp 188

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Constellation

Draco

Field centre

RA: 16^h06^m
Dec: +55°25'
Position angle: -0°51'

Field size

0°14' × 0°09'

Equipment

Fornax 102
Celestron C11 Edge HD
ZWO ASI1600MM pro
Atik EFW2
Baader LRGB Filters
FLO OAG

Exposure

16x300s LUM, 4x300s Red, 5x300s Blue, 5x300s Green

Location

Charente, France

Target name

Arp 188

Title

Near and far

About this image

Arp 188 is (another) challenging member of the Arp catalogue of peculiar galaxies. This galaxy shows a long tail - hence it is sometimes known as the 'tadpole'. One theory is that the tail is the remnant of a pair of galaxies in a cosmic collision. In any case it's very faint but is, I think, just visible here.

Alongside it is the bright (mag 8.35) foreground star - HD145223. ARP 188 is over 400 million light years (LY) away.
It's visual stellar companion is a mere 850 LY distant. Most shots of ARP 188 crop out this star, but I like seeing these different distance scales in play....

Acquired in Voyager, processed in PI. 2.5 hrs total exposure in LRGB.

Files associated with this observation

proc1b.jpg (1.1 MB)

Like this image

Alan Thomas, Dr Paul Leyland, Jim Tomney, David Basey, Andy Wilson

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