Deep Sky Object in Summer
Abell 72 (Planetary Nebula in Delphinus)


Date & Time: Apr 26 2025, from 26:45 to 27:29 JST(+0900)
Composed 12 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with IDAS LPS-P1 Light-pollution suppression filter
Auto-guided with Meade LX200 Equatorial & Lacerta M-GEN
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(2040×2040)
Device Size...10×10mm
Sensitivity...ISO4000, White Balance...Daylight


Abell 72 / Planetary nebula, type IIIb
R.A.20h 50m 02.1s (2000.0)
Dec.+13°33' 29" (2000.0)
Apparent Size2.0×1.8'
Real Size3.6×3.2 light yrs.
Magnitude14.6
Distance6200 light yrs.
Other IDsPK 59-18.1
Abell 72 is a medium-sized planetary nebula located 2.2 degrees southeast of δ Delphini, which forms the diamond shape of the constellation Delphinus. It has an irregularly bright, roughly circular shape with an apparent diameter of about 2 arcminutes, featuring a protruding structure extending southward. The slightly bluish central star is a 16th-magnitude white dwarf. The distance from the Solar System is estimated to be around 6200 light-years.



Abell 61
Abell 74

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