Celestial hemisphere:  Southern  ·  Constellation: Monoceros (Mon)  ·  Contains:  PK224+15.1
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Abell 25 RGB O-III, Jerry Yesavage
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Abell 25 RGB O-III

Equipment

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Acquisition details

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Description

Mag 14.5. Rarely imaged.

The other one at Astrobin is:

https://www.astrobin.com/247939/

GENERAL NOTE ON ABELL PLANETARY NEBULAE >>>>>>>>>>>>>

I have been on a project for several years now to image all the Sharpless2 Objects that I can see from my location near San Francisco. I branched out into the Abell's since I got a new scope and remarkably the Stellarvue 130 is just perfectly suited to shoot these small buggers.

There are 86 Abell objects and and maybe 20 are too low on the horizon for me to image... this leaves me 66 that are feasible... and I have imaged 30.

This is my collection:

Abell Objects

Please note there is also a Abell Group with now more than 40 examples.

A big challenge is to know what narrow band filter to use with tehse and not to waste imaging time with the wrong filter. Generally they are O-III but there are exceptions. Some on the list are mostly hydrogen alpha and maybe nor real planetary nebulae.

This is a very nice site which has them all and a good first chance at identifying the right filter:

www.stathis-firstlight.de/deepsky/abell_winter.htm

Hope you enjoy these obscure but interesting objects...

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