Hemisphere:  Northern  ·  Constellation: Cepheus (Cep)
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OU4 (Giant Squid) and Sh2-129 Wide Field--revised, 



    
        

            snakagawa
OU4 (Giant Squid) and Sh2-129 Wide Field--revised
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OU4 (Giant Squid) and Sh2-129 Wide Field--revised

Technical card


Basic astrometry details

Astrometry.net job: 697870

RA center: 21h 9' 1"

DEC center: +59° 59' 2"

Pixel scale: 4.817 arcsec/pixel

Orientation: -178.826 degrees

Field radius: 2.337 degrees


Resolution: 2172x2736

Description

--This is a revised version of an image posted last night--

B152 (LDN1125)[top], Sh2-129 (Flying Bat Nebula)+ OU4 (Giant Squid Nebula) [center], and LBN446[bottom]

Canon EF 200mm F/2.8; Atik460ex(mono); Astrodon 5nm filters; -10 deg C
Ha: 10min x 27
Oiii: 10min x 33
Sii: 10 min x 16

OU4 area was blended (50:50) with the close-up image I took last month using a C8 Hyperstar

Color palette is HST: Synthetic Natural Color=1:2

EasyHDR was used to enhance the contrast
Photoshop was used to soften the stars and improve the star color

Comments

Sky plot

Sky plot

Histogram

OU4 (Giant Squid) and Sh2-129 Wide Field--revised, 



    
        

            snakagawa