HOP 0386

HINODE Operation Plan (HOP)

accepted on

26-sep-2019

HOP No.

HOP title

HOP 0386

Coordination with DL-NIRSP First Light

abstract of observational proposal

Main Objective: Obtain coordinated observations with SOT/SP and DL-NIRSP to verify instrument performance.

Scientific Justification: In order to validate the observations from DL-NIRSP we would like to make coordinated observations with SOT/SP on available targets which contain a variety of magnetic field strengths and orientations for direct comparison of Fe I 630 nm spectropolarimetric signal. The lack of atmospheric seeing, stability, and rigorous calibration of SOT/SP make it an ideal standard of comparison for the new integral field spectropolarimeter.

request to SOT

Only SOT/SP is required for this coordination.
SP should be operated in a mode so that there is no pixel summation to achieve the highest spatial resolution, using a raster step that is equal to the slit width, and data from the full slit is saved. Because this coordination will likely occur during Hinode's eclipse season, short, non-continuous rasters are
acceptable. Rasters of pores should include the entire pore. Rasters of a sunspot do not need to cover the entire sunspot, but should include regions of umbra, penumbra, and granulation. Rasters of plage or quiet-sun should be focused on magnetic elements and should be at least 10" wide. Short rasters should be repeated during a 3 hour observing window. The best time for observations will likely be 18-21 UT for seeing and weather.

remarks

Dates:
1. DL-NIRSP does not have a firm date for first light observations, but is likely to cover two weeks during May - June 2020.

2. Minimum number of coordinated observing days: 3

3. Days do not need to be consecutive

Time window:
1. 16 - 22 UT
2. Interruptions are allowed

Target(s) of interest: 1. Target in order of preference: sunspot, pore, plage, quiet-sun network within 60 deg of disk center.