Imaged on nights of 10/17/2020, 10/18/2020, 10/19/2020, 12/1/2020, 11/3/2020
Abell 65 (PK17.3-21.9) is an almost never imaged planetary nebula in Sagittarius. This is the second image on Astrobin. Abell65 is small, measuring 2.1 arc minutes and has a magnitude listed at 13.8. It shows well on the RGB image. The Ha is quite a bit weaker than the Oiii, and both appear to have the same distribution, a very uniform oblong shape.
There is a notable very faint outer halo. The central blue progenitor binary star is prominent. The binary central star is the source of the outer halo.
My Abell Collection is here:
Abell Planetary NebulaeCurrently 60+, and soon to be complete.
It has some research:
"Spatio-kinematic modelling of Abell 65, a double-shelled planetary nebula with a binary central star "
https://ui.adsabs.harvard.edu/abs/2013MNRAS.434.1505H/abstractWe present the first detailed spatio-kinematical analysis and modelling of the planetary nebula Abell 65, which is known to host a post-common envelope, binary, central star system. As such, this object is of great interest in studying the link between nebular morphology and central star binarity. [O III]5007 Å and Hα+[N II]6584 Å longslit spectra and imagery of Abell 65 were obtained with the Manchester Échelle Spectrometer on the 2.1-m telescope at the San Pedro Martír Observatory (MES-SPM). Further [O III]5007 Å longslit spectra were obtained with the Ultraviolet and Visual Échelle Spectrograph on the Very Large Telescope (VLT-UVES). These data were used to develop a spatio-kinematical model for the [O III]5007 Å emission from Abell 65.
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