Study 000490:

ACRONYM: Hot_loop_osci_2_v4 (modified version for study ID=460)

Key modification: Sparse raster (step size is 4"). This is to increase the FOV
and the chances of catching flares.

Note: This observation requires running three studies:

ACRONYM:           PRY_slot_contextLITE (study ID=354)   
ACRONYM:           Hot_loop_osci_1_v4
ACRONYM:           Hot_loop_osci_2_v4

This study is designed to detect Doppler shifts and intensity variations
mainly in hot coronal and flare emission lines. 

The observation consists of three studies. Study A is 
using slot-40 to quickly scan whole AR for obtaining a context image. 
Studies B  and C are using the repeated short raster in high cadence
to search for flare-excited oscillations in hot coronal loops, such as
standing slow mode waves  as observed by SUMER. It also includes a  pair of
density sensitive Ca XV lines for density diagnostics. The study is
designed to detect oscillations and waves in coronal loops of T =1-10 MK.

#Study A: Context study
ACRONYM:           PRY_slot_contextLITE
TARGET:		   AR loops on the limb  
EXPOSURE TIME:     10 s
RASTER:            Scanning
SLOT:              40"
STEP SIZE:         32"
FOV:               488"x488"
RASTER DURATION:   3m29s
REPEAT TIMES:      1 

#Study B:
ACRONYM:          Hot_loop_osci_1_v4
TARGET:           AR loops on the limb
EXPOSURE TIME:    10 s
RASTER:           Scanning
SLIT:             2"
STEP SIZE:        4"
FOV:              38"x200"
RASTER DURATION:  2m27s
REPEAT TIMES:     1 
Volume:		  1.7 Mbits
N_LINES           8

CaXV,181.99;CaXVII,192.85;FeXII,195.12;CaXV,200.98;FeXVI,262.98;FeXXIII,263.76;
FeXVII,269.42;FeXV,284.16

#Study C:
ACRONYM:          Hot_loop_osci_2_v4
TARGET:           AR loops on the limb
EXPOSURE TIME:    10 s
RASTER:           Scanning
SLIT:             2"
STEP SIZE:        4"
FOV:              22"x200"
RASTER DURATION:  1m37s
REPEAT TIMES:     1
Volume:		  1 Mbits
N_LINES           8

CaXV,181.99;CaXVII,192.85;FeXII,195.12;CaXV,200.98;FeXVI,262.98;FeXXIII,263.76;
FeXVII,269.42;FeXV,284.16

Pointing:
--------

Flare-productive active region on the limb, better located at the eastern limb.
For Study A, the 1/3 FOV is on the disk and 2/3 FOV off the limb.
For Studies B and and C the slit center position is set about 30-50 arcsec
above the AR on the limb (close to the core of the AR)

Use/Instructions to planners:
-----------------------------

i)   Run Study A (ID=354) first to get a context image of AR. 
ii)  Repeat Study B (Hot_loop_osci_1) for about 5 hours, and then
     run Study A again for a context image.  
iii) Repeat Study C (Hot_loop_osci_2) for about 5 hours, and then
     run Study A again.
iv)  Stop or repeat ii) and iii) once more if possible. 

Note: The above 10 hrs observations are better not interrupted.
We hope to make observations of at least 10 hrs every day
(better 20 hrs/day if allowed), and last for 4-5 days so we can track
the AR passing from behind the limb to the front 
disk to catch loops of different sizes and different parts of loops
during this period. 

Warning:
--------

The squence above should run uninterrupted (use chained studies),
i.e.(append to hilighted entry).