Deep Sky Object in Spring
PK238+34.1 (Planetary Nebula in Hydra)

Date & Time: Mar 28 2009, from 23:39 to 24:15 JST(+0900)
Composed 4shots with 12 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon & Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D50 (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...12bit CCD-RAW, converted to 8bit TIFF(3008×2000)
CCD Sensitivity...ISO1600

PK238+34.1 / Planetary Nebula, type IIb
R.A.09h 39m 09.1s (2000.0)
Dec.-02°48' 32" (2000.0)
Apparent Size4.5'
Real SizeN/A
This picture has captured a very minor and indistinct planetary nebula lying in western Hydra. The nebula is positioned about 1 degree south of iota Hya, fairly large one with a diameter of 4.5 arc minutes but very dimmer brightness about 13th magnitude, perhaps you cannot detect it even if you can use larger ranged telescopes. A 7th magnitude star is glittering just southwest edge of the nebula, this star obstructs the clear figure of the nebula through our own eyes. This image barely shows you a greenish blued round shape of the nebula but cannot detect detailed inner structure.


M44(The Praesepe)

Copyright(c) 2009 by Naoyuki Kurita, All rights reserved.
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