The image above is a wide view of the Bubble Nebula and a Planetary nebula (KjPn8) in the constellation Cassiopeia. I've seen some really nice images of KjPn8 here so I thought with my large field of view I would image them both in context of one another. The Bubble Nebula (NGC 7635) is a HII, emission nebula with the bubble created by the large and hot central star (
BD+60˚ 2522) which in this image is located in the lower part of the bubble. Towers of HII emission can be seen all around the bubble pointing towards the central star. See the full res image to see these massive HII towers and the bubble in high resolution of .62"/pixel.
The planetary nebula KjPN8 (PN G 112.5-00.1) is an interesting and unusual planetary nebula. It's located in the upper right of the image. It has a bipolar lobe of about 14 arcmin in size. The central star and core of the planetary nebula is a very small 3-4 arc sec. It's very red and seems to have a ring of HII emission around it. . You can see the small core of the planetary nebula zooming in to the full res view and looking at the center of the PN. There are several theories about how this planetary nebula formed. New
research using ground based and the Hubble Space Telescope points to two separate events. Two bipolar stars essentially creating two planetary nebula. Its one of the largest bipolar lobes known and may be one of the only objects of this type discovered. KjPn8 was discovered in 1971 by M.A. Kazaryn and E.h. Pavsamyan.
I collected 19hrs of Ha and OIII data on this object. However it has very little OIII and mainly emits in the HII spectrum. The data was collected at 2x2 binning and drizzled to 1x1 resolution in post processing
The data was collected at home and at the Eldorado star party from 21 October thru 30 Nov 21.
The main image is a cropped portion of a larger field of view.
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