Abell 84

About image 

Abell 84 (also called PK 112-10) is a planetary nebula in Cassiopea: it has dimensions 147”x114” and magnitude 14.40.
It is rarely imaged by amateur astrophotographers: also on Internet there aren't so many references.
The nebula however shows an interesting bipolar structure with two lobes of Ha emission surrounding a “bubble” with main emission in OIII wavelenght but with also some Ha inside.
Several remote galaxies are visible in the background.

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 13x300" bin3 -15C gain 100
             G 13x300" bin3 -15C gain 100
          B 13x300" bin3 -15C gain 100

             Ha 40x300" bin3 -15C gain 100

          OIII 24x300" bin3 -15C gain 100
Total integration  8h35'
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator, BlurXTerminator
SQM-L       20.97   
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           6/7/8 October 2023


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