==============================================================
Pupil stop positioning repeatibility
==Backward movement==
4-March-2003
Test performed by Simon Rees and analyzed by Almudena Zurita
==============================================================
The test consisted on giving a full revolution to
the pupil stop wheel in the backward direction,
but analyzing each segment of the wheel individually.
The sequence of movements was (F=forward, B=backward):
BFB BFB BFB ....
| | | |
pstop1 pstop2
The pupil imager was in all the time.
An image was taken at each position of the
wheel (after foreward or backward movements).
The script used is attached at the end of this file.
The table below contains the run number and the position of
the center of the stops on the detector.
There is not evidence for tight spots.
There is a small drift (max shift in positioning ~5 pixels), which
is about 4 times less than the drift observed when moving the wheel
forward.
-------------------------------
Image pstop x y
(pix) (pix)
-------------------------------
r586821 osca-clr 603 486 r=84
r586822 ker
r586823 osca-clr 601 486
r586824 ker r586824 & r586826 look quite similar
r586825 clear
r586826 ker
r586827 clear
r586828 kel
r586829 clear
r586830 kel r586830 & r586832 look quite similar
r586831 naomi-obs 603 488 r=92
r586832 kel
r586833 naomi-obs 598 488
r586834 naomi-clr 599 488
r586835 naomi-obs 598 488
r586836 naomi-clr 599 488
r586837 cass-k 653 489 r=132
r586838 naomi-clr 599 488
r586839 cass-k 653 489
r586840 cass-h 651 489
r586841 cass-k 652 489
r586842 cass-h 650 489
r586843 cass-j 645 489
r586844 cass-h 649 489
r586845 cass-j 643 489
r586846 cass-s 648 489 r=126
r586847 cass-j 642 489
r586848 cass-s 649 489
r586849 osca-obs 597 489 r=84
r586850 cass-s 650 489
r586851 osca-obs 597 489
r586852 osca-clr 598 487
r586853 osca-obs 597 489
r586854 osca-clr 599 487
r586855 ker
r586856 osca-clr 598 487
r586857 ker
r586858 clear
r586859 ker
r586860 clear
r586861 kel
r586862 clear
r586863 kel
r586864 naomi-obs 592 488
r586865 kel
###########################Script used to check repeatability of pstop wheel
#!/usr/bin/csh -f -x
#
#script to check repeatability of pupil stop wheel
#
# 2003/04/02
#Pupil wheel initialized before running the script
#segment 1
pstop ingrid osca-clr
run ingrid 2 "osca-clr"
sleep 10
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
pstop ingrid osca-clr
run ingrid 2 "osca-clr"
sleep 10
#segment 2
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
#segment 3
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
#segment 4
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
pstop ingrid naomi-obs
run ingrid 2 "naomi-obs"
sleep 10
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
#segment 5
pstop ingrid naomi-obs
run ingrid 2 "naomi-obs"
sleep 10
pstop ingrid naomi-clr
run ingrid 2 "naomi-clr"
sleep 10
pstop ingrid naomi-obs
run ingrid 2 "naomi-obs"
sleep 10
#segment 6
pstop ingrid naomi-clr
run ingrid 2 "naomi-clr"
sleep 10
pstop ingrid cass-k
run ingrid 2 "cass-k"
sleep 10
pstop ingrid naomi-clr
run ingrid 2 "naomi-clr"
sleep 10
#segment 7
pstop ingrid cass-k
run ingrid 2 "cass-k"
sleep 10
pstop ingrid cass-h
run ingrid 2 "cass-h"
sleep 10
pstop ingrid cass-k
run ingrid 2 "cass-k"
sleep 10
#segment 8
pstop ingrid cass-h
run ingrid 2 "cass-h"
sleep 10
pstop ingrid cass-j
run ingrid 2 "cass-j"
sleep 10
pstop ingrid cass-h
run ingrid 2 "cass-h"
sleep 10
#segment 9
pstop ingrid cass-j
run ingrid 2 "cass-j"
sleep 10
pstop ingrid cass-s
run ingrid 2 "cass-s"
sleep 10
pstop ingrid cass-j
run ingrid 2 "cass-j"
sleep 10
#segment 10
pstop ingrid cass-s
run ingrid 2 "cass-s"
sleep 10
pstop ingrid osca-obs
run ingrid 2 "osca-obs"
sleep 10
pstop ingrid cass-s
run ingrid 2 "cass-s"
sleep 10
#segment 11
pstop ingrid osca-obs
run ingrid 2 "osca-obs"
sleep 10
pstop ingrid osca-clr
run ingrid 2 "osca-clr"
sleep 10
pstop ingrid osca-obs
run ingrid 2 "osca-obs"
sleep 10
#segment 12
pstop ingrid osca-clr
run ingrid 2 "osca-clr"
sleep 10
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
pstop ingrid osca-clr
run ingrid 2 "osca-clr"
sleep 10
#segment 1 again
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
pstop ingrid ker
run ingrid 2 "ker"
sleep 10
#segment 2 again
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
pstop ingrid clear
run ingrid 2 "clear"
sleep 10
#segment 3 again
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
pstop ingrid naomi-obs
run ingrid 2 "naomi-obs"
sleep 10
pstop ingrid kel
run ingrid 2 "kel"
sleep 10
exit
=========================================================