Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.apo.nmsu.edu/Instruments/filters/UW_WSU.html
Дата изменения: Wed Jan 8 18:29:56 2003
Дата индексирования: Sun Apr 10 01:58:06 2016
Кодировка:
Поисковые слова: п п п п п п п п п п п п п п п п п р п р п р п р п р п р п р п р п р п р п р п р п р п р п
UW-WSU Nebular Emission-Line Filters

UW-WSU Nebular Emission-Line Filters

Not on-site at APO, but can be obtained on loan--contact Jeff Morgan at UWash, morgan/astro.washington.edu 

CENTER(Å) PASSBAND(Å) NEBULAR LINE (OR CONTINUUM)


4861        60        Hbeta
5007        60        [O III]
6301        10        [O I]  -- [S III]6312A line is supressed
6563        10        Halpha -- [N II]6584 and 6583 lines are suppressed
6583        10        [N II] -- Halpha line is suppressed
6728        80        [S II]6717+6731
4686        60        He II
4760       100        blue cont or Fe II
8290       195        red cont.  See also the Hodge filter set below.
9532        50        [S III]
The following filters are privately owned but generally available

6717*        3        [S II]  - bought for Io torus study
6731*        3        [S II]             "
5895*        5        [Na I]             "
6565**      20        part of Hodge galaxy redshifted Halpha + [N II] set
6585**      20                           "                          
6603**      20                           "
*Jeff Morgan
**Paul Hodge

Almost all are 3-cavity interference filters, so the passbands are very rectangular (sharp cutoffs). The peak transmissions vary, being generally highest at longer wavelengths and wider filter passbands. The narrower filters are designed to mask nearby bright nebular lines. All filters are 2x2 inches, 1/2-inch thick and cost a lot of money.

The following filters are availble when not in use locally. (Local use is generally limited to May - Sept.). Its best to request the filters two months prior to needing them.

The filters are available to loan to APO observers who request them provided that they agree to cover all costs of shipping and, if damaged, replacement. The promise to cover these costs must be signed by someone who can allocate the funds for replacement which, for the narrower filters, can exceed $1000. We ask that the filters be handled ONLY by experienced APO site personnel.

Documentation provided by Bruce Balick, balick/astro.washington.edu

APO Filters Homepage