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ABELL 24

PLANETARY NEBULA IN CANIS MINOR (THE LESSER DOG)

(Image centered at: ra 07 h: 51m / dec +03º 00')

CLICK THE IMAGE FOR A HIGH RESOLUTION VIEW

January - 2025, Home Backyard in Martinez, Buenos Aires, Argentina

DATA

TYPE: Planetary Nebula 

APPARENT DIAMETER: 4.4 x 3 arc minutes

APPARENT MAGNITUDE (V): 13,6

DISTANCE: 1730 light years

IMAGE INFORMATION

INSTRUMENT: 6" ORION OPTICS UK (Ultra Grade Optics) w/Sky Watcher Coma Corrector (0.9x) working at at f4.5

CAMERA: QHY 183 MONO

MOUNT: VIXEN GDPX, OAG with Starlight Xpress Lodestar

FILTERS: BAADER LRGB Set + ANTLIA HA 3nm

SKY CONDITIONS: urban skies - Bortle 8

EXPOSURES: HARGB (120,45,45,45)

OBJECT DESCRIPTION AND IMAGE SESSION

Abell 24 is a large faint planetary nebula in Canis Minor. With an irregular but round shape it has the look of a Rose therefore its nick name The Cosmic Rose. The integrated magnitude is 13.6 and the central star is magnitude 17.1. The prominent galaxy to the upper right is PGC 22023 shining at magnitude 14,7.

Abell 24 was discovered in 1955 by the American astronomer George Ogden Abell on the photo plates of the «Palomar Observatory Sky Survey» (POSS). This survey was exposed on photographic plates with the 48 inch Oschin Schmidt Telescope on Mount Palomar in Southern California. In 1966 he published a second list of a total of 86 planetary nebulae discovered on the POSS photo plates. Most of the 86 PNs discovered on the POSS photo plates are large and have one low surface brightness, which suggests an advanced age of their developmental stage