NGC 4639 : 無料・フリー素材/写真
NGC 4639 / geckzilla
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Surprisingly, only a WFPC2 version of this galaxy is featured on the Hubble sites. This is a combination of WFC3 and ACS data. It's not quite as deep as the WFPC2 observations but it's still a lovely set of data.Red: hst_11570_23_wfc3_uvis_f814w_sciGreen: hst_11570_23_wfc3_uvis_f350lp_sciBlue: HST_10802_86_ACS_WFC_F555W_sciVarious other data was (were?) used to fill in the chip gap. I did something strange this time, too. I rotated the diffraction spikes for the blue channel so that they would match with the other two channels. There were only three stars this time so it wasn't a big deal to do. I don't know about other people but one of the more obscure things which please me are the subtle, rainbow-like spectrums visible in some diffraction spikes.North is NOT up. It is 58° clockwise from up. |
| 撮影日 | 2014-01-24 22:15:44 |
| 撮影者 | geckzilla |
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