NGC691 - HST - Potw2122a
Credit: ESA/Hubble & NASA, A. Riess et al.
Acknowledgement: M. ZamaniThis image features the spiral galaxy NGC 691, imaged in fantastic detail by Hubble’s Wide Field Camera 3 (WFC3). This galaxy is the eponymous member of the NGC 691 galaxy group, a group of gravitationally bound galaxies that lie about 120 million light-years from Earth.
Objects such as NGC 691 are observed by Hubble using a range of filters. Each filter only allows certain wavelengths of light to reach Hubble’s WFC3. The images collected using different filters are then coloured by specialised visual artists who can make informed choices about which colour best corresponds to which filter. By combining the coloured images from individual filters, a full-colour image of the astronomical object can be recreated. In this way, we can get remarkably good insight into the nature and appearance of these objects.
Credit:
ESA/Hubble & NASA, A. Riess et al. Acknowledgement: M. Zamani
Coordinates Position (RA): 1 50 41.34 Position (Dec): 21° 45' 32.77" Field of view: 2.04 x 2.15 arcminutes Orientation: North is 23.4° right of vertical Colours & filters Band Wavelength Telescope Optical Long pass 350 nm Hubble Space Telescope WFC3 Optical V 555 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3.
Relevante Bilder
Relevante Artikel
NGC 691NGC 691 ist eine Spiralgalaxie vom Hubble-Typ Sbc im Sternbild Widder auf der Ekliptik. Sie ist schätzungsweise 124 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 120.000 Lichtjahren. Sie ist das hellste Mitglied der zehn Galaxien zählenden NGC 691-Gruppe . Im gleichen Himmelsareal befinden sich u. a. die Galaxien NGC 680, NGC 694, IC 167, IC 1730. .. weiterlesen