Pick Up, 天体観測, 番外編, 道具 NASA's Hubble Space Telescope has revisited the famous Pillars of Creation, revealing a sharper and wider view of the structures in this visible-light image. Astronomers combined several Hubble exposures to assemble the wider view. The towering pillars are about 5 light-years tall. The dark, finger-like feature at bottom right may be a smaller version of the giant pillars. The new image was taken with Hubble's versatile and sharp-eyed Wide Field Camera 3. The pillars are bathed in the blistering ultraviolet light from a grouping of young, massive stars located off the top of the image. Streamers of gas can be seen bleeding off the pillars as the intense radiation heats and evaporates it into space. Denser regions of the pillars are shadowing material beneath them from the powerful radiation. Stars are being born deep inside the pillars, which are made of cold hydrogen gas laced with dust. The pillars are part of a small region of the Eagle Nebula, a vast star-forming region 6,500 light-years from Earth. The colors in the image highlight emission from several chemical elements. Oxygen emission is blue, sulfur is orange, and hydrogen and nitrogen are green. Object Names: M16, Eagle Nebula, NGC 6611 Image Type: Astronomical Credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA) 28 1月 2023 天体観測用フィルター別・星雲まとめ フィルター別の対象リストが世の中に無さそうなのでまとめてみた。Hβが16対象、OIIIが36、UHCが47ある。眼視観望でフィルターワークで楽しめる代表的な星雲は、南半球以外は多分ほぼ網羅しているので、余程のエンスーでない限りこれだけあれば困らないはず? イチロー
Pick Up, 天体観測, 番外編 26 1月 2023 真冬の標高1500m 先日久しぶりに、と言っても一ヶ月ぶりだが(^^)山梨への単独遠征を朝まで堪能した。明け方にはオリオンを追いかけ双子まで沈みかけ、早くもさそりが顔を出してきた。 イチロー