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    51. The Many Shapes of Planetary Nebulae
    ... While many of the PNs appear round, or elliptical as is the case for the Ring Nebula, many of them are decidedly not round: . ... The Ring Nebula is actually thought to be more or less a cylindrical nebula viewed close to the axis, rather than an ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~volk/pnshapes.html -- 2.8 Кб -- 14.01.2010
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    52. http://www.stsci.edu/jwst/science/dps12-closing-thoughts.pdf
    ... rings (see stray light) ·Peak- ups on objects of varying brightness ·Possibility of interac.on on guide stars between observer and ground system ·Shadow observa.ons--very useful for moving targets ·Slew .me penalty and short- exposure- .me science ·Stray ...
    [ Текст ]  Ссылки http://www.stsci.edu/jwst/science/dps12-closing-thoughts.pdf -- 48.5 Кб -- 04.02.2013
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    53. http://www.stsci.edu/ftp/observing/status_reports/old_reports_96/hst_status_09_24_96
    ... 1.2 Completed WF/PC-2 6358 (UV Imaging of Circumnuclear Starburst = Rings) The WF/PC-2 was used to make ultraviolet snapshot observations of = galaxy NGC-5953 in order to study its circumnuclear starburst rings. ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/ftp/observing/status_reports/old_reports_96/hst_status_09_24_96 -- 6.0 Кб -- 24.09.1996
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    54. HST this week: 141
    ... Leon Koopmans, Kapteyn Astronomical Institute . Dark Halos and Substructure from Arcs Einstein Rings . Abstract . 10800 . ... ACS images of galaxy-galaxy Einstein ring lenses from the Sloan survey . ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~inr/thisweek1/thisweek141.html -- 11.2 Кб -- 10.05.2013
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    55. John H. Debes
    ... As in Saturn's rings, there might be streaks in the dust due to material that is darker than the surrounding dust, or perhaps caused by shadows of rocky bodies with sizes larger than the scale height of the disk. ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~debes/dust.html -- 10.5 Кб -- 23.11.2011
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    56. Introduction
    ... Nonetheless, deconvolution may remain useful in removing optical artifacts such as Airy rings, diffraction spikes, and scattered light from WFPC 2 images. ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/stsci/meetings/irw/proceedings/birettaj.dir/section3_1.html -- 2.5 Кб -- 02.06.1994
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    57. ExInEd: Test HTML Document
    ... as an ExInEd Electronic PictureBook, this sensational collection from the golden era of space exploration contains 100 beautiful and informative images of our solar system, including all the planets, planetary rings and satellites, asteroids, and comets ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/exined/Planetary.html -- 3.2 Кб -- 14.02.1997
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    58. HST this week: 162
    ... Besides searching for the shepherds, the current HST program will use the High Resolution Camera on ACS to measure the thickness of the rings, and study the colours of the recently discovered fainter rings. ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~inr/thisweek1/thisweek162.html -- 14.7 Кб -- 18.06.2007
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    59. HST this week: 295
    ... Dark Halos and Substructure from Arcs Einstein Rings . Abstract . 11082 . ... program aims to set that concern at rest through WFPC2 observatons of a second ... This produces an internal onion-ring structure, with a wide range of chemical ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~inr/thisweek1/thisweek295.html -- 12.6 Кб -- 22.10.2007
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    60. HST this week: 273
    ... Besides searching for the shepherds, the current HST program will use the the Planetary camera on WFPC2 to measure the thickness of the rings, and study the colours of the recently discovered fainter rings. ...
    [ Сохраненная копия ]  Ссылки http://www.stsci.edu/~inr/thisweek1/thisweek273.html -- 16.6 Кб -- 26.09.2007
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