Deep Sky Object in Summer
M17 (Omega Nebula in Sagittarius)

Click on image to enlarge

Date & Time: Jun 29 2024, from 21:23 to 22:19 JST(+0900)
Composed 8 shots with 8 minutes exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with LPS-D1 Light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial & Lacerta M-GEN
CMOS Camera: ZWO ASI2600MC Pro (Cooled temp.: -10°C)
Location: Furudono town, Fukushima pref.

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


M17 (NGC6618) / Diffused Nebula, type 1 E
R.A.18h 20m 48.0s (2000.0)
Dec.-16° 11' 00" (2000.0)
Apparent Size46×37'
Real Size43×35 light yrs.
Magnitude7.0
Distance3300 light yrs.
Other IDsSh2-45, LBN60
M17 is a diffused nebula in Sagittarius positioned about 2.5 degrees south of M16(Eagle Nebula) in previous page. M17 has several nicknames of "Swan Nebula" or the "Omega Nebula", this name came because the shape of the deep part of nebula resemble a Greek letter of omega. And occasionally, the nebula is known as the "Horseshoe Nebula". We can observe the nebula with a size of about 40arc minutes and 3300 light years away.

⇒ Display the spectral profile of M17 (in new window)



M16(Eagle Nebula)
M24(Star-cloud in Sagittarius)

Copyright(c) 2024 by Naoyuki Kurita, All rights reserved.
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