Anthony Wesley (406mm Newton) |
The left hand image was taken using an Astrodon UV filter (325-375nm) and the right hand image taken through a 1 micron (1000nm) longpass, ie about 1000-1050nm. The UV image shows the very high altitude clouds, whereas the 1 micron filter penetrates a little further and shows the deeper cloud structure. [Anthony Wesley,Murrumbateman Australia] ≪アンソニ オーストラリア≫
2016/10/05
| 2016/10/03
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