Deep Sky in Summer
Around Sh2-16 (Diffused Nebulae in Sagittarius)

Click on image to enlarge

Date & Time: May 2 2022, from 25:25 to 26:53 JST(+0900)
Composed 12 shots with 8 minutes exposed
Optical: PENTAX 7.5cm(2.9") ED refractor with conversion lens (f=360mm, F4.8)
with IDAS LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial & Lacerta M-GEN
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -20°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...16bit FITS, converted to 16bit TIFF(6248×4176)
Device Size...23.5×15.7mm, Gain...100


Sh2-16 / Diffused Nebula, type 2 E
R.A.17h 46m 35.0s (2000.0)
Dec.-29°18' 00" (2000.0)
Apparent Size14.6×10.0'
Real Size28 light yrs.
Magnitude -
Distance4900 light yrs.
Other IDsLBN 1124, RCW127
Sh2-19 / Diffused Nebula, type 2 E
R.A.17h 47m 58.0s (2000.0)
Dec.-29°07' 00" (2000.0)
Apparent Size15.0×11.0'
Real Size17 light yrs.
Magnitude -
Distance4900 light yrs.
Other IDsLBN 2, RCW140
This field shows you small H-alpha nebulosities distributed around a border to Scorpius and Ophiuchus in southwest edge of Sagittarius. A vast one in center has a number of Sh2-16 with a size of 15×10 arc minutes. And a bit dimmed region in east of Sh2-16 is Sh2-19, small one squeezed by them is Sh2-18, respectively. You can recognize uncountable fine stars of the Milky Way in left hand side of the field. You can also realize that there are other several reddish nebulae lying around this field. The galactic center has been positioned just southeast of a nebula of Sh2-17 in upper right hand side.


Around Sh2-16 Nebulae & star clusters around Sh2-16



Sh2-3
Sh2-22

Copyright(c) 2022 by Naoyuki Kurita, All rights reserved.
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