Differences

This shows you the differences between two versions of the page.

--- filter_wheel [2022/04/22 21:23] – created 131.235.226.105
+++ filter_wheel [2025/03/26 12:16] (current) – external edit 127.0.0.1
@@ Line 1: / Line 1: @@
 ====== Filter Wheel Setup and Uses ======
-This is just the standard filter wheel setup used on the Canadian Spectrophotometer Network. Other countries may differ
+This is just the standard filter wheel setup used on the Canadian Brewer Spectrophotometer Network. Other networks may differ
-^<html><center>Filter Wheel 1</center></html>^^^^<html><center>Filter Wheel 2</center></html>^^^
+|   ^   Filter Wheel 1   ^^^^   Filter Wheel 2   ^^^
-|Position|Attenuation|Filter|Notes|Position|Filter|Notes|
+^Position|Steps|Attenuation|Filter|Notes|Steps|Filter|Notes|
-|0|FP|Film Polarizer| |0|0|Clear|
+^0|320|FP|Film Polarizer| 0|0|Clear|
-|1|2.0|GQD2|Used for most measurements|1|0.5|ND1|
+^1|256|2.0|GQD2|Used for most measurements|64|0.5|ND1|
-|2|3.0|ND6|Not used (Future Autosighting?)|2|1|ND2|
+^2|192|3.0|ND6|Not used (Future Autosighting?)|128|1|ND2|
-|3|0|Clear|Used during FZ, FM|3|1.5|ND3|
+^3|128|0|Clear|Used during FZ, FM|192|1.5|ND3|
-|4|4.5|GDQ2+2.5|Not Used|4|2.0|ND4|
+^4|64|4.5|GDQ2+2.5|Not Used|256|2.0|ND4|
-|5|1.7|GDQ1|Used for DT/RS Measurement*|5|2.5|ND5|
+^5|0|1.7|GDQ1|Used for DT/RS Measurement*|320|2.5|ND5|
+In order to use Position 5 in filter wheel one in DT/RS, this must be enabled in [[ic|IC]]
+Enter IC, and go down to "Second film polarizer" and press [key]h[/key]. This will change the name to "FW1@5 for DTRS"
+The Canadian Brewer Spectrophotometer Network has done this achieve higher counts during DT/RS test. The ideal counts for DT is 3 million counts on the high intensity and 1 million counts on the low intensity. For RS we are aiming for 1 million counts for best results.
+Shown below is the expected DI for filter wheel 1\\
+{{:misc:fw1di.png?600|}}