Study 000337:

ACRONYM: rah_line_narrow

Objective:
---------

Observe line narrowing above the solar limb

Study summary:
-------------

Slit/slot: 2" slit
No of pointing positions: 59 (scanning)
Step size: 4"
Total spatial width: 238"
Pixels in solar-y: 256
Exposure time: 60 seconds
Cadence: 1 hour 5 minutes 20 seconds
Compression: DPCM
Data rate: 6.3524 kbits/s
Data volume: 25 Mbits

Emission lines
184.54	Fe X (32 pixel window)
192.90	O V (56 pixel window, wavelength range 192.65 - 193.88, also
        includes Fe XI 192.83 and Fe XII 193.51)
195.12	Fe XII (32 pixel window)
202.04	Fe XIII (32 pixel window, density sensitive with Fe XIII 203.83)
203.83 	Fe XIII (32 pixel window, density sensitive with Fe XIII 202.04)
256.32	He II (32 pixel window)
275.55	Si VII (32 pixel window)

Condition necessary to run and pointing:
----------------------------------------

On the limb above the equator (solar_y = 0). The limb should be seen in
the fov, but maximise the altitude above the limb that can be observed.

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

Minimum of 6 hours observations requested. Fill time available with
as many repeats as possible. Avoid SAA

Either:
1) run using raster repeat in the golden period (light skirmishes with one SAA)

Or

2) Space as individual studies in betwenn SAAs


Warning:
--------

Do not run in SAA