Specialized - Photo Tube ·ImageConverterIntensifier
Image-converter tube designed for direct photography, including intensification of stellar spectra. It converts weak optical imagery into a brighter output image suitable for photographic recording.
ITT Laboratories FW-109 is an image-converter tube for direct photography, including stellar-spectra intensification.
General specifications
Properties common to every published source and operating point.
Electrical assignments shared by every tube using this base designation.
No verified pinout is recorded for this base designation.
1 physical section, each with unique specifications.
Section 1
No fixed ratings are recorded for this section.
Image-converter tube; electrical operating/focus values are stated to be identical to type 6411/1C16 and are not invented here.
Source-dependent data
Each block preserves the test conditions and published values from one reference. Values from different sources are intentionally kept separate.
Data set 01
Published operating points and test conditions from this source.
Cathode response
S-11
Cathode useful diameter
0.97 in
Phosphor type
P-11
Phosphor useful diameter
0.5 in
Image magnification
0.68 x
Resolution at 16 kV
45 lp/mm
Reported photographic gain minimum
50 x
Reported photographic gain maximum
100 x
Mica exit-window thickness
0.0004 in