もう何ヶ月ぶりだろう、朝まで一抹の雲も無く乙女高原の最高レベルの空!しかも無風!!先日は忘れモノで双眼望遠鏡が全く使えず、その前もそのまた前も強風で落ち着いて観望出来なかった反動で、今日は20cmF7 BINOで脈絡無く見まくった。
![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)](https://ichirophoto.org/wp-content/uploads/2023/01/hubble_birthofstars_0-1500x1250.jpg)
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?