Deep Sky Object in Spring
Sh2-71 (Planetary Nebula in Aquila)

Date & Time: Apr 30 2017, from 26:55 to 27:29 JST(+0900)
Composed 12 shots with 3 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO6400, White Balance...Daylight

Sh2-71 / Planetary Nebula, type IIIb+III
R.A.19h 02m 00.0s (2000.0)
Dec.+02° 09' 23" (2000.0)
Apparent Size2.6×1.5'
Real Size2.5×1.4 light yrs.
Distance3400 light yrs.
Sh2-71 is a planetary nebula bathed in the Milky Way of western Aquila. The nebula has a long axis of 2.6 arc minutes and about 3400 light years away. You detect the nebula as a reddish ringed shape in images taken with smaller telescopes. Actually the nebula has the jet-structures in north south direction, grouped into the bipolar typed planetary. It's known that a central star is a dimmed variable with a period of about 17 days.



Copyright(c) 2017 by Naoyuki Kurita, All rights reserved.
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