Celestial hemisphere:  Northern  ·  Constellation: Cassiopeia (Cas)  ·  Contains:  HD19844
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Bipolar with Structure Planetary Nebula G139.0+03.2, Jerry Yesavage
Bipolar with Structure Planetary Nebula G139.0+03.2, Jerry Yesavage

Bipolar with Structure Planetary Nebula G139.0+03.2

Getting plate-solving status, please wait...
Bipolar with Structure Planetary Nebula G139.0+03.2, Jerry Yesavage
Bipolar with Structure Planetary Nebula G139.0+03.2, Jerry Yesavage

Bipolar with Structure Planetary Nebula G139.0+03.2

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Description

This image surprised me as the original IPHAS survey did not have O-III but there is a lot here in this one.  This image with the O-III did not look like the published Ha, so I isolated the H-alpha and indeed it is there and covered up by a lot of O-III.  See the published images below. 

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There do not appear to other intentional versions on Astrobin. Apparently first observed on 9/24/2011. 

There one incidental image barely visible in this image of the Heart and Soul by Thorsten Glebe. I think it is the blue spot in the lower right. The RA and DEC are close enough for government work. 

Information for this image is from the Isaac Newton Telescope Photometric Hα Survey of the Northern Galactic plane (IPHAS) PN Catalogue.  IPHAS J031345.5+613707.

It is apparent 127 arcseconds long.  Morphology is "Bs" or Bipolar with Structure.

I believe the imaging and spectroscopy was done at "SM" or San Pedro Martir 2.0m Telescope (SPM) in Mexico with its Boller& Chivens (B&Ch) spectrograph..

Note below the size was based on a 120s H-alpha exposure on a 2m telescope.

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There is some confusion about whether this should be classified as bipolar or round and I put up the O-III here.  The O-III is less strong but round.  The H-a looks like the original images and appears bipolar.  Both have weird structures.  The original image was produce with also RGB using @Alex Woronow 's NB assistant, which produces more of a composite image than straight H-alpha.

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Since I plan to image more of these (there are a lot) here is a table of descriptors from the original paper cited above.

Major and where relevant, minor axis dimensions in arcseconds: the measurement of PNe size was done from the 120 s exposure Hα images so we are limited in description of the exact extent of the nebulae.

Morphological classification: assigned following the ‘ERBIAS’ morphological classifiers to indicate Elliptical, Round, Bipolar, Irregular, Asymmetric or quasi-stellar (unresolved or barely resolved) PNe.

The additional sub-classifiers of ‘amprs’ were also used where evident:

one-sided enhancement/asymmetries denoted with ‘a’

multiple shells or external structure as ‘m’

point symmetry ‘p’

well-defined ring structure or annulus ‘r’

resolved, internal structure as ‘s’.

Telescope and date for first spectroscopic confirmation: a two-letter code is used to identify each telescope used for spectroscopic confirmations as follows:

WH – WHT 4.2 m Intermediate Dispersion Spectrograph (IDS) on the 2.5 m INT and the spectrograph ISIS on the 4.2 mWilliam Herschel Telescope (WHT) located at the Observatorio del Roque de los Muchachos on La Palma in the Canary Islands

IN – INT 2.5 m

SM – San Pedro Martir 2.0m Telescope (SPM) in Mexico with its Boller& Chivens (B&Ch) spectrograph.

KP – KPNO 2 m

GC – Grantecan 10 m

OS – OSN 1.5 m Observatory of Sierra Nevada (OSN) in Spain

MS – ANU 2.3 m with DBS

WI – ANU 2.3 m with WiFeS

SA – SAAO 1.9 m

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