The Headphones was a tough faint one, a dying star blowing off its outer atmosphere!!!!
Jones-Emberson 1, or PK164+31.1,
also known as the Headphone Nebula, is a 14th magnitude planetary nebula in the constellation Lynx
at a distance of 1600 light years.
It is a larger planetary nebula with a very low surface brightness, making it tougher to see or capture.
In my long exposure you can easily see that the 16.8-magnitude central star is a very blue white dwarf, also visible are many other faint tiny background galaxies, including two faint ones behind the central opening in the planetary nebula.
This was a tough faint one for the little 4inch and 6 inch scopes!!!!…but after 8 hours and 15 minutes of exposure integration over 4 nights, I got a decent shot of it.
I captured 5 hours 15 minutes(63 x 300sec subs) of QHY183C Cooled (OSC) RGB Camera Data with
the 102mm Refractor Scope and combined it with 3 hours(36 x 300sec subs) of H-Alpha data with the 6 inch Newt. Scope, QHY183Mono Camera as the Luminance Channel. Stacked in DSS and aligned the data from separate scopes/nights in Maxim DL,
and then final in Pixinsight & Adobe CS 2021.
Some Historical stuff…
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.