Deep Sky Object in Spring
IC972 (Planetary Nebula in Virgo)



Date & Time: Apr 26 2025, from 25:29 to 26:18 JST(+0900)
Composed 13 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



IC972 / Planetary nebula, type IIc
R.A.14h 04m 25.9s (2000.0)
Dec.-17°13' 40" (2000.0)
Apparent Size54.0"
Real Size1.7 light yrs.
Magnitude14.9
Distance7260 light yrs.
Other IDsAbell 37, PK 326+42.1
IC 972 is a small planetary nebula located near the southeastern edge of the constellation Virgo; 7.2 degrees SSW of κ Virginis. It has a roughly circular shape with an apparent diameter of about 50 arcseconds. The center appears blue, while the outer region emits red Hα light. Although extremely faint in this image, the central star is an 18th-magnitude white dwarf. The distance of IC 972 from the Solar System is estimated to be around 7260 light-years, although this value has a significant margin of error.




NGC4361

Sh2-290


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