Hemisphere:  Southern  ·  Constellation: Norma (Nor)
Shapley 1, 



    
        

            Andre Brossel
Shapley 1
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Shapley 1

Technical card

Imaging cameras: ZWO Optical ASI1600MM Pro

Guiding telescopes or lenses: Orion 50mm Guidescope

Guiding cameras: ZWO ASI290MM

Software: Pixinsight

Filters: Orion Extra Narrowband Filter Ha 1.25"


Dates:May 29, 2020

Frames: 15x300"

Integration: 1.2 hours

Avg. Moon age: 6.71 days

Avg. Moon phase: 42.88%


Basic astrometry details

Astrometry.net job: 3580035

RA center: 15h 51' 40"

DEC center: -51° 31' 22"

Pixel scale: 0.367 arcsec/pixel

Orientation: 41.727 degrees

Field radius: 0.225 degrees


Resolution: 3612x2544

Data source: Traveller

Description

Shapley 1 (Sp 1 or PLN 329+2.1)[3] is an annular planetary nebula in the constellation of Norma with a magnitude of +12.6. As viewed from Earth, it is peculiar in that it seems to be a non-bipolar, torus-shaped planetary nebula. However, it is thought that this is due to the viewpoint of looking directly down on a binary system whose orbit is perpendicular to Earth.

Discovered in 1936 by Harlow Shapley, it is approximately 4900 light years from Earth, and is around 8700 years old. At the center of the nebula is a magnitude 14 white dwarf star. It has an angular diameter of 1.1 arc minutes,[5] which makes it about one-third (.32) of a light year across.

This was capture with a C9.25 @ f10 and ASI1600mm. HaRGB. 14x5minutes exposures, gain 200, - 20 C.
Bortle 4 sky.

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Sky plot

Sky plot

Histogram

Shapley 1, 



    
        

            Andre Brossel