Deep Sky Object in Summer
IC4701 (Diffused Nebula in Sagittarius)

Click on image to enlarge

Date & Time: Jul 16 2021, from 23:47 to 24:13 JST(+0900)
Composed 6 shots with 5 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-V4 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial & Lacerta M-GEN
Digital Camera: Canon EOS 6D (Remodeled)
Location: Koumi town, Nagano pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5472×3648)
Device Size...36×24mm, Sensitivity...ISO3200


IC4701 / Diffused Nebula, type 4 E
R.A.18h 16m 15.0s (2000.0)
Dec.-16°33' 00" (2000.0)
Apparent Size60×41'
Real Size15 light yrs.
Magnitude -
Distance11700 light yrs.
Other IDsSh2-44, LBN56
Gum 79
In northern edge of the Sagittarius, you can find out a faint emission nebula of IC4701 at a degree southwest of the Omega Nebula (M17) seen at upper left hand-side. The nebula has a size of about 60×40 arc minutes but is extraordinary dimmed, not a observing object in scope-aided eyes. The nebula is positioned just north of the Star Cloud in Sagittarius, you can appreciate uncountable fine stars distributed at this vicinity. The distance to the nebula has been estimated about 12 thousand light years.


Deepsky objects around IC4701 Nebulae & Star clusters around IC4701

Italic indicates #'s of open clusters



Around IC4628, H12
IC4812 & surrounding molecular cloud

Copyright(c) 2021 by Naoyuki Kurita, All rights reserved.
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