Pease 1: Planetary Nebula in M15
Pease 1 (Ps 1, PK 065-27.1, Kuster 648) in
||21 : 30.02 (h:m)
||+12 : 10.2 (deg:m)
||3 (arc seconds)
Pease 1 was the first planetary nebula found in a globular cluster,
in 1928 by Francis Gladheim Pease.
It had been previously cataloged as a star by
Friedrich Kustner (1921).
Stan Moore has been able to image Pease 1 in an RGB image obtained with
a ST-7 CCD camera on a 12.5-inch RC telescope. Instead of "normal" red,
he used a 10 nm H-Alpha filter to emphasize nebular emission. Thus, the
small planetary nebula appears as a red dot in the image (just above the
globular's core). Click on the image to see a full-size version.
Leos Ondra has provided
more information on this planetary
NASA's and ESA's Hubble Space Telescopes has
investigated Pease 1 in M15
for planetary nebula Pease 1
Publications on planetary nebula Pease 1 (NASA ADS)
Observing Reports for Pease 1 (IAAC Netastrocatalog)
- Pease, F.G., 1928.
A planetary nebula in the globular cluster Messier 15.
Publications of the Astronomical Society of the Pacific, Vol. 40, No. 237,
p.342 (Oct. 1928)
- Kustner, Friedrich, 1921.
Der kugelfoermige Sternhaufen Messier 15.
(The Globular Star Cluster Messier 15.)
Veröffentlichungen der Universitäts-Sternwarte zu Bonn, No. 15,
Bonn: F. Cohen, 1921., 47 p.
Locate Pease1 in M15 (finder chart)
Pease 1 observing reports, collected by Doug Snyder
Pease 1 = PK 65-27.1, Deep Sky Challenge No. 1 for Nov - Dec, 1999,
from "Off the Beaten Path" by Steve Gottlieb
Planetary nebula IRAS 18333-2357 in M22
Planetary Nebulae in Globular Clusters
Last Modification: February 4, 2015