Hemisphere:  Northern  ·  Constellation: Pisces (Psc)  ·  Contains:  NGC 660
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NGC 660, 


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NGC 660

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NGC 660, 


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NGC 660

Imaging Telescopes Or Lenses
Planewave CDK24
Imaging Cameras
FLI Proline 16803
Planewave L600
Astrodon 50mm B · Astrodon 50mm R · Astrodon 50mm L · Astrodon 50 mm G
FLI CFW-5-7 · Hedrick Focuser · Planewave Delta-T · Planewave EFA
Planewave PWI3 · Planewave PWI4 · PixInsight 1.8 · Sequence Generator Pro · Photoshop CS3 · Maxim DL6 · Adobe Photoshop CC 2014
Guiding Cameras
Starlight Xpress Ultrastar

Acquisition details

Oct. 30, 2021 ·  Oct. 31, 2021 ·  Nov. 1, 2021
Astrodon 50 mm G: 11x900" (2h 45') -20C bin 1x1
Astrodon 50mm B: 12x900" (3h) -20C bin 1x1
Astrodon 50mm L: 24x900" (6h) -20C bin 1x1
Astrodon 50mm R: 8x900" (2h) -20C bin 1x1
13h 45'
Flat darks:
Avg. Moon age:
24.74 days
Avg. Moon phase:
Mean SQM:
Mean FWHM:

RA center: 01h43m01s.335

DEC center: +13°3816.84

Pixel scale: 0.468 arcsec/pixel

Orientation: -58.092 degrees

Field radius: 0.212 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 2620x1933

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard


The nighttime weather in Julian, CA was looking very good for this October/November dark cycle – 21.4 skies with average 2" FWHM on 15 minute subs. This is my 1st of 2 object captured during my 10-day session. 

"NGC 660 is a peculiar and unique polar-ring galaxy located approximately 45 million light-years from Earth in the Pisces constellation. It is the only such galaxy having, as its host, a "late-type lenticular galaxy".It was probably formed when two galaxies collided a billion years ago. However, it may have first started as a disk galaxy that captured matter from a passing galaxy. This material could have, over time, become "strung out" to form a rotating ring.

The ring is not actually polar, but rather has an inclination from the plane of the host disk of approximately 45 degrees. The extreme number of pinkish star-forming areas that occurs along the galaxy's ring could be the result of the gravitation interaction caused by this collision. The ring is 50,000 light-years across - much broader than the disk itself - and has a greater amount of gas and star formation than the host ring. This likely indicates a very violent formation. The polar ring contains objects numbering in the hundreds. Many of these are red and blue supergiant stars. The most recently created stars in the ring were just formed approximately 7 million years ago. This indicates that the formation of these stars has been a long process and is still occurring.

Data about the dark matter halo of NGC 660 can be extracted by observing the gravitational effects of the dark matter on the disk and ring's rotation.From the core of the disk, radio waves are being emitted. The source of these waves is an area only 21 light-years across. This may indicate the presence of a super-cluster of stars located within an area of cloud of gas. The region in the centre has a vast amount of star formation, so luminous that it is considered to be a starburst galaxy.

Late in 2012, this polar-ring galaxy produced an enormous outburst having a magnitude of approximately ten times brighter than a supernova explosion. The cause is not certain, but this event may have resulted from a tremendous jet being emanating from galaxy's central black hole."



    NGC 660, 


  • Final
    NGC 660, 




Description: Minor 1 pixel "dust" removal.

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Sky plot

Sky plot


NGC 660, 



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Unique or Unusal Deep Sky Targets