Study 000524:

ACRONYM:          HPW021VEL240x512v2_b

As study HPW021_VEL_240x512v2 but with a modified line list. Extended window #24 (new width=56);
to include O IV 279.933 . This line can become intense during an impulsive heating
event and ratios of this line to Mg V can be used to measure abundances

This study is designed for velocity studies in the quiet Sun. The
primary features of this study are: [1] full slit, [2] relatively deep
exposures (100s), and [3] extensive line list. The current thinking is
that the Fe VIII 185 and Si VII 275 lines are the best lines for
velocity calibration.

To accelerate the observing and to conserve telemetry a 2" step is
taken between exposures. 

This study is similar to HPW021_VEL_240x512v1 except that the exposure
time has been increased to 100s for use in the quiet Sun.
  
TARGET:           Quiet Sun
EXPOSURE TIME:    100s
RASTER:           Scanning
SLIT:             1"
FOV:              240"x512" (2" steps)
RASTER DURATION:  3h34m18s
VOLUME:           174 Mbits
RATE:             14 kbits/s
COMPRESSION:      JPEG85        

The primary lines for each data window are:

 1    180.40       32 #  Fe XI 180.401
 2    182.10       32 #  Ca XV 181.900, Fe XI 182.167, Fe X 182.310
 3    184.33       32 #  O VI 184.117, Fe X 184.536
 4    185.21       24 #  Fe VIII 185.213
 5    186.75       32 #  Fe VIII 186.601, Ca XIV 186.610, Fe XII 186.880
 6    188.40       48 #  Ar XIV 187.964, Fe XI 188.216, Fe XI 188.299, 
                         Fe IX 188.497, S XI 188.675
 7    192.47       56 #  Fe XXIV 192.040, Fe XII 192.394, Fe XI 192.813, 
                         Ca XVII 192.858, O V 192.906
 8    194.10       40 #  Fe X 193.715, Ca XIV 193.874, Ar XIV 194.396
 9    195.12       24 #  Fe XII 195.119, Fe XII 195.179
10    197.86       24 #  Fe IX 197.862
11    201.05       24 #  Ca XV 200.972, Fe XIII 201.121
12    202.04       24 #  Fe XIII 202.044
13    203.83       24 #  Fe XII 203.720, Fe XIII 203.826
14    208.50       32 #  Ca XV 208.324, Ca XVI 208.604, Fe XIII 208.679, 
                         Ca XV 208.722
15    255.00       32 #  Fe XVII 254.87, Fe XXIV 255.100
16    256.48       32 #  He II 256.317, Si X 256.366, S XIII 256.686
17    258.37       24 #  Si X 258.375
18    262.98       24 #  Fe XVI 262.984
19    264.30       72 #  Fe XXIII 263.760, S X 264.233, Fe XIV 264.787, 
                         Fe XVI 265.003
20    270.52       24 #  Mg VI 270.394, Fe XIV 270.519
21    275.40       24 #  Si VII 275.368, Fe XVII 275.54
22    276.30       40 #  Mg VII 276.153, Mg V 276.579
23    278.40       32 #  Mg VII 278.402, Si VII 278.445
24    280.39       56 #  Mg VII 280.39, O IV 279.933
25    284.16       24 #  Al IX 284.015, Fe XV 284.160

Pointing:
---------

The quiet Sun.

Instruction to planners:
-----------------------

The planner should not put the feature of interest in the middle of
the slit. Using the bottom or top third will provide more quiet Sun
for velocity calibration.

Warning:
-------

2" steps are taken between exposures.