Contains: NGC 6027
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Seyfert's Sextet - NGC 6027

Technical card

Imaging telescope or lens: Orion EON 130mm ED Triplet APO

Imaging camera: ZWO ASI1600MM-Cool

Mount: Astro-Physics Mach1GTO

Guiding telescope or lens: Orion 60mm Guidescope

Guiding camera: Orion StarShoot AutoGuider Pro Mono

Focal reducer: Orion 3" Field Flattener

Software: PHD2PixInsight 1.8Main Sequence Software Sequence Generator Pro

Filters: BlueGreenRedLuminance

Accessory: ZWO EFW

Resolution: 3712x2088

Dates: June 17, 2017

Frames:
Blue: 10x60" (gain: 139.00) -15C bin 1x1
Green: 10x60" (gain: 139.00) -15C bin 1x1
Luminance: 67x60" (gain: 139.00) -15C bin 1x1
Red: 10x60" (gain: 139.00) -15C bin 1x1

Integration: 1.6 hours

Avg. Moon age: 22.17 days

Avg. Moon phase: 49.73%

Astrometry.net job: 1618218

RA center: 239.799 degrees

DEC center: 20.758 degrees

Pixel scale: 0.425 arcsec/pixel

Orientation: 118.446 degrees

Field radius: 0.252 degrees

Locations: Home, Onalaska, Texas, United States

Description

Seyfert's Sextet is the densest known galaxy cluster. The galaxies are seen in the center of this image about 190 million light-years away, in the constellation Serpens, in the rough shape of a capital "A". As the name implies, the group appears to contain 6 galaxies, but actually there are "only" 4 interacting galaxies. The circular face-on galaxy at lower center is in the background and appears aligned with the main group only by chance. Also, the prominent fuzzy object at lower left is not a separate galaxy at all, but a tidal tail of stars flung out by the galaxies' gravitational interactions. The gravitational interaction among these galaxies should continue and ultimately the galaxies will likely merge to form a single giant elliptical galaxy. Overall, the entire galaxy cluster take up less volume than our galaxy.

Comments

Author

Gary Imm
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Seyfert's Sextet - NGC 6027, Gary Imm

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