Deep Sky Object in Summer
NGC6522, NGC6528 (Globular Clusters in Sagittarius)


Date & Time: May 2 2014, from 26:24 to 26:36 JST(+0900)
Composed 4 shots with 4 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO3200




NGC6522 / Globular cluster, type VI
R.A.18h 03m 35.0s (2000.0)
Dec.-30°02' 02" (2000.0)
Apparent Size9.4'
Real Size68 light yrs.
Magnitude9.9
Distance25,100 light yrs.
NGC6528 / Globular cluster, type V
R.A.18h 04m 49.6s (2000.0)
Dec.-30°03' 21" (2000.0)
Apparent Size5.0'
Real SizeN/A
Magnitude9.6
DistanceN/A
This image shows you two paralleling small globulars at 0.5 degrees northwest of gamma Sgr. Right (west) and left (east) ones has numbers of NGC6522 and NGC6528, and visual diameters of about 9 and 5 arc minutes, respectively, NGC6522 has about two times larger size than NGC6528. And you can see an indistinct dark nebula of B298 just southeast of NGC6528.




NGC6440

NGC6553


Copyright(c) 2014 by Naoyuki Kurita, All rights reserved.
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