Study 000185:

ACRONYM: Fe_Opacity

The goal of this project is to study the opacity characteristics of coronal 
loops. We plan to examine line ratios of Fe XV ions and search for signatures 
of intensity enhancements, within the loop structures, which will indicate 
optically thick plasma conditions. The degree of intensity enhancement is 
predicted to depend on the plasma geometry and angle of observation, and 
hence it is necessary to study emission features in an active region loop as 
it rotates from the solar limb to disk centre (or vice-versa). Such data, 
combined with simultaneous observations from other Hinode instrumentation,  
will provide detailed information on the loop morphology, and aid in the 
evaluation of 3-dimensional loop parameters.

TARGET: Coronal loop (same loop for all observations)

Since it is necessary to image the same coronal loop structure as it  
rotates from limb to disk centre (or vice-versa), a time delay between 
successive observations of approximately 24 hours would be very beneficial. 
This will allow us to build up an accurate picture of the 3-D structure of  
the loop.

Frequency of Observations: One complete raster per day using 1" slit

Raster detail:

Exposure Time: 10 sec
XSIZE = 400"
YSIZE = 512"
Number of Exposures per raster = 400
Slit step size = 1"
Time Required = 1hr 23m 18s per day

WARNING:

None