Celestial hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  PK072-17.1
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Abell 74, Jerry Yesavage
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Abell 74

Revision title: Pure HOO NBA Stars

Getting plate-solving status, please wait...
Abell 74, Jerry Yesavage
Powered byPixInsight

Abell 74

Revision title: Pure HOO NBA Stars

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Description

Abell 74 is an old and dim faint planetary nebula in the constellation Vulpecula.  It is also known as PK 72.7 -17.1, is approximately 2500 light years from earth, and its diameter spans approximately 15 light years.  =highlighted-textAbell74 is a very large size planetary, measuring 13.8 arc minutes and has a magnitude listed at 12.2 to 15.8, depending on source.  The distance provided for =highlighted-textAbell 74 is ~ 2,500 light years.  (Wikipedia)

Started with the Narrowband Assistant PI script from @Alex Woronow .  (Little S-II so merged in a HOO version).  NBA stars used in the final version.  There is some O-III but it overlaps with everything else.  Maybe I should have tried Dynamic Combo....

Stretched with GHS:  GHS Forum Discussion

Previous version I could not get any O-III... tried harder here. 


Abell 74


GENERAL NOTE ON ABELL (and other) PLANETARY NEBULA>>>>>>>>>>>>>

From Wikipedia:

The Abell Catalog of Planetary Nebulae was created in 1966 by George O. Abell and was composed of 86 entries thought to be planetary nebulae that were collected from discoveries, about half by Albert George Wilson and the rest by Abell, Robert George Harrington, and Rudolph Minkowski. All were discovered before August 1955 as part of the National Geographic Society – Palomar Observatory Sky Survey on photographic plates created with the 48-inch (1.2 m) Samuel Oschin telescope at Mount Palomar. Four were later rejected as not being planetaries: Abell 11 (reflection nebula), Abell 32 (red plate flaw), Abell 76 (ring galaxy PGC 85185), and Abell 85 (supernova remnant CTB 1 and noted as possibly such in Abell's 1966 paper). Another three were also not included in the Strasbourg-ESO Catalogue of Galactic Planetary Nebulae (SEC): Abell 9, Abell 17 (red plate flaw), and Abell 64. Planetaries on the list are best viewed with a large aperture telescope (e.g. 18-inch (0.46 m)) and an OIII filter.

There is an Abell Group on Astrobin. 

This is my personal collection:

Planetary Nebula (Abell)

These are sorted by number and behind the Abell's are other miscellaneous PNs that I have imaged... I have a list of the 100 brightest.

This is Gary Imm great poster on the Abell's:

Gary's Poster

This is Jerry Macon's outstanding Abell Collection:

Jerry Macon's Abell Collection

These are some useful Abell relevant sites:

Color and IMHO Best Filter Information

Images by Season and More Filter information in German

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Title: Pure HOO NBA Stars

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Abell 74, Jerry Yesavage

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Planetary Nebulae