Observation by Peter Hannah: NGC3718

Uploaded by

Peter Hannah

Observer

Peter Hannah

Observed

2024 May 09 - 00:00

Uploaded

2024 May 26 - 18:02

Objects

NGC3718
NGC3729
Arp 322

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Constellation

Ursa Major

Field centre

RA: 11^h32^m
Dec: +53°04'
Position angle: +48°04'

Field size

0°33' × 0°29'

Equipment

Planewave CDK 14
10Micron GM2000 mount
FLI Proline P9000 CCD camera
Astrodon LRGB filters

Exposure

Lum 9.5hrs, Red 11hrs, Green 12hrs, Blue 11hrs

Location

IC Astronomy, Oria, Spain

Target name

NGC3718 plus NGC3729 and Hickson 56

Title

NGC3718

About this image

NGC3718 (centre) is a spiral galaxy with a distinctive twist, found in Ursa Major just south of the Plough. Also designated Arp 214, the mag 10.7 galaxy is 9.2 x 4.4 arcminutes in size. The Arp Atlas of Peculiar Galaxies notes it to be a Seyfert galaxy, meaning it has a very bright core.

The second-largest galaxy in the image is NGC3729, also a spiral. Both are classed as barred spirals, though the Arp atlas notes that the bar in 3718 is a dust lane rather than being stellar in nature. The two galaxies lie at a similar distance - about 40 million light years - and are probably interacting, which may have caused the distortion in NGC 3718.

To the south (lower left) of NGC3718 is Hickson 56 (Arp 322), a group of 5 galaxies of 15th and 16th magnitude, considerably further away at around 400 million light years.

North is to the upper right in this image.

Files associated with this observation

NGC3718_LRGB.jpg (2.0 MB)

Like this image

Simon Paul Davis, Callum Potter, Tim Haymes, Callum Wingrove, Charles Graham Taylor, Pat Devine

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