Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.apo.nmsu.edu/35m_operations/35m_manual/Old_Website/instruments/dis/APO_slits.html
Дата изменения: Sat Oct 23 00:09:56 2004
Дата индексирования: Sun Apr 10 09:47:36 2016
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Поисковые слова: ngc 891

DIS Slit Selection

DIS Slit Inventory: October 2004

Last updated 22 October 2004 by JCB

Width (arcsec)	Location	Material	Note
      0.9	  DIS           Steel
      1.0     3.5m Storage	Quartz
      1.1      	  ???
      1.2	  DIS	        Steel           2.0" occulting bar; unpolished near edges
      1.5         DIS           Steel           
      1.6    	  ???		???		(Does this slit really exist?)
      1.9	  ???		???		(Does this slit really exist?)
      2.0     3.5m Storage    	Quartz	
      5.0	  DIS		Steel

NOTES: 'Locations' were as of October 2004. "DIS" refers to slits which remain permanently availablein the so-called default slit wheel. This 'default' wheel also contains one open position for imaging-mode observations.