4_Band_Photometer – EDF

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This device is a 4 band radiometer used in the BU Remote Sensing Lab to compare the reflection spectrum observed at ground level with that seen in satellite photos. The EDF has performed extensive repair and modification on these units over the years.

Completed

Send the tripod shaft collar mounts to the machine shop to be manufactured (will be done the week of 08/20/07)
Send ND-filter plate and specialty thumb screws to machine shop to be manufactured (will be done the week of 08/20/07)
Order ND-filters for the filter plate
Order opal diffusers and screw on mounts for the filter plate
Order bandpass filters for the detectors (waiting for shipment)
Order shaft collar for the tripod mount
Find, order, and replace LCD for the radiometer
Make three 42 inch extension cables (FYI: detector cables are 45 inches)
Replace internal bandpass filters for the detectors (waiting for shipment)
Install and engrave ND-filters/opal diffusers (waiting for shipment and filter plate)
Put everything together and test
Placed order for 9 diffuser mounting tubes from Thorlabs

Specifications

'PIN Diodes:

UDP PIN-10 DB/541. Specs found online:

  Part Number = PIN10DB/541
  Manufacturer Name = UDT Sensors
  Description = General-Purpose Photodiode
  Semiconductor Material = Silicon
  Re Min.(A/W) Responsivity = 190m
  @Wavelength(m)(Test Condition) = 450n
  t(resp) Max.(s) Response Time = 500n
  NEP Max.(W/(Hz)1/2) = 47p
  C(T) Max. (F) Capacitance = 24n
  Status = Discontinued
  Package = N/A