Jones-Emberson 1

About image 

Jones-Emberson 1, also known as the Headphone Nebula or PK 164+31.1, is a 14th magnitude planetary nebula in the constellation Lynx at a distance of 1600 light years. It is a large nebula with low surface brightness: the 16.8-magnitude central star is a very blue white dwarf.
Jones-Emberson 1 will fade away over the next few thousand years, but its hot central star will take billions of years to cool.
The nebula was discovered in 1939 by Rebecca Jones and Richard M. Emberson.
Its PK designation comes from the names of Czechoslovakian astronomers Luboš Perek and Luboš Kohoutek, who in 1967 created an extensive catalog of all of the planetary nebulae known in the Milky Way as of 1964.
The numbers indicate the position of the object on the sky: PK 164+31.1 basically represents the planetary nebula that when using the galactic coordinate system has a galactic longitude of 164 degrees, a galactic latitude of +31 degrees, and is the first such object in the Perek-Kohoutek catalog to occupy that particular one square degree area of sky.
[text from APOD/Wikipedia]

Technical data
Optic         GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount       10Micron GM2000 HPSII
Camera        ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters        Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted RGB  and Ha 5nm, OIII 5nm
Guiding system   ZWO OAG-L with guide camera ASI 174MM
Exposure details       R 29x300" bin3 -15C gain 100
             G 27x300" bin3 -15C gain 100
          B 32x300" bin3 -15C gain 100

             Ha 39x600" bin3 -15C gain 100

          OIII 46x600" bin3 -15C gain 100
Total integration  21h30'
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L       21.07   
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           31 January, 4/13/14 February 2024


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