Date & Time: | Aug 7 2010, from 22:45 to 23:04 JST(+0900) |
Composed 3 shots with 8 minutes exposed | |
Optical: | TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3) |
with IDAS LPS-P1 Light-pollution suppression filter | |
Auto-guided with TAKAHASHI EM-200 Equatorial & Meade Pictor 201XT | |
Digital Camera: | Nikon D50 (Remodeled) |
Location: | Koumi town., Nagano pref. |
Camera Settings: | Recording Format...12bit CCD-RAW, converted to 16bit TIFF(3008×2000) |
CCD Sensitivity...ISO800 |
And you can enjoy many other attractive celestial objects around this field like the Star Cloud in Sagittarius, the Omega Nebula (M17) and so on. Perhaps you'll notice that M25 has a dark lane dividing the cluster into north and south regions; it's one of characteristics of the cluster. M25 is estimated about 1800 light years away. |
M23 |
M26 |
Copyright(c) 2010 by Naoyuki Kurita, All rights reserved. | |||
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