HOP 0499

HOP No.

HOP title

HOP 0499

[SOOP: R_SMALL_HRES_MCAD_Polar-Rotation] Solar Orbiter Polar Rotation observations coordinated with Hinode

request to SOT

Time interval: From 16 March 2025, 03:00 UT to 17 March 18:00 UT Pointing: South Pole. See the remarks section below for the URL to the Solar Orbiter pointing webpage. Please ensure that the limb is contained in the field of view.

During the Polar Rotation SOOP observation interval, as telemetry allows, please schedule 1 or 2 full-FOV fast maps of the south polar region **per day**. The program listed for FSM for HOP81, including the appropriate margin factor, can be used (https://www.isas.jaxa.jp/home/solar/hinode_op/hop.php?hop=0081).

request to XRT

Please run the standard polar observation mode:
<Al/poly>
FoV 384 pix x 384 pix, Binning: 1 x 1, Time resolution: < 1 min.
Exposure time: 16.34 sec, JPEG Quality: Q75
Data rate: 7.6 Mbits/h (one image/1 min)
<G-band>
FoV 384 pix x 384 pix, Binning: 1 x 1, Time resolution: 30 min

remarks

Dates: 16-17 March 2025, co-observations of south pole with Solar Orbiter during a 40 hours period polar mapping.

Time window: 16 March 03:00 UT to 17 March 18:00 UT, 1.6 days, as co-observation with SO/PHI-HRT, SO/EUI and SO/SPICE
Interruptions during the co-observations are not an issue

Target(s) of interest: Polar region: Solar south pole The exact pointing will be made public via the dedicated SO web page:
https://s2e2.cosmos.esa.int/confluence/display/SOSP/Solar+Orbiter+Planning+-+for+coordination+with+external+parties

Previous HOPs:
Prior HOPs were submitted for co-ordinated polar observations with Solar Orbiter during the October 2023 and October 2024 Remote Sensing Windows. This HOP is similar to those two previous cases, HOP 0470 and HOP 0494 respectively, with the present one corresponding to a larger time window to encompass the SOOP.

Work performed with the co-ordinated SO/PHI-HRT and SP observations from October 2023, dealing with the re-projection and analysis of magnetic field configuration from the two vantage points, has been presented by Alejandro Moreno in several meetings (XVI Reunion cientifica SEA, COFFIES workshop,...) and is being prepared for publication.