HOP 0510

HINODE Operation Plan (HOP)

accepted on

19-jun-2025

proposer

name :

Polito, Chamberlin, Bose, Gosic

e-mail :

polito[at]lmsal.com, Phil.Chamberlin[at]lasp.colorado.edu, sbose[at]seti.org

contact person in HINODE team

name :

Kobelski, Duncan (NASA/MSFC) / Watanabe (NAOJ) / De Pontieu (LMSAL), SOT -- DeRosa/Shine, XRT -- Reeves/Testa (SAO), EIS -- Matthews/Culhane (MSSL)

e-mail :

adam.kobelski[at]nasa.gov, jessie.m.duncan[at]nasa.gov, tet_watanabe[at]jcom.zaq.ne.jp, bdp[at]lmsal.com, derosa[at]lmsal.com, shine[at]lmsal.com, kreeves[at]cfa.harvard.edu, ptesta[at]cfa.harvard.edu, sarah.matthews[at]ucl.ac.uk, j.culhane[at]ucl.ac.uk

abstract of observational proposal

Main Objective: On July 17th we are launching the SNIFS (Solar Eruption Integral Field Spectrograph) sounding rocket from White Sands and we would like to request Hinode support.

Scientific Justification: Science: SNIFS will target small scale energy release in the transition region and chromosphere. SNIFS is the first space-based integral field spectrograph. The science targets will be active network (spicules studies) and an active region (nanoflare or microflare studies, a larger flare if we are very lucky). SNIFS has two channels: our FOV for each of the single channels alone are 0.5 arcmin x 0.5 arcmin. These two channels are 1 arcmin away from each other (inner edges separation, not center-to-center) (so total FOV is about 120x30").
Cadence is 1s and we have three emission lines: Lyman Alpha 121nm, Si III (logt=4.9) and OV (logt=5.3).

request to SOT

- 1 larger context scan just before the launching window (or as possible according to the Hinode plan and eclipse season) 120x120" FOV fast scan (~1min for 5 arcsec). Pointing should be in the middle of SNIFS FOV (to be provided)

- during the launch window, between 19 and 20:10UT: as many 20x120" FOV fast scans (~1min for 5 arcsec) as possible, pointing slightly offset from the center of the SNIFS FOV, more centered towards the AR target.

- 1 larger context scan after the launch (or as possible according to the Hinode plan and eclipse season) . 120x120" FOV fast scans (~1min for 5 arcsec). Pointing should be in the middle of SNIFS FOV (to be provided)

request to XRT

High cadence flare observation with Thin-Be. Recommended program: XOB#1CD6 (384x384 Thin-Be at 10s cadence with AEC 3)

NO FLARE PROGRAM: During the observing window, no flare program should be set and only the main program should run. Turn off all flare trigger mode commands during the observing sequence.

request to EIS

- 1 or 2 larger context scans between ~18:30-19UT (or as possible according to the Hinode plan and eclipse season) HH+AR_FLR_RAS_NO3J, FOV: 240" x 240", 5s exp with 2" slit - 13 min . Pointing should be in the middle of SNIFS FOV (to be provided)

- during the launch window, between 19 and 20:10UT: repeated fast scans, a bit offset from the center of the SNIFS FOV, more centered towards the AR target. EIS study: qub_hi-cad-flare_v2.

- 1 or 2 larger context scans at ~20:10UT after the launch (or as possible according to the Hinode plan and eclipse season) . EIS study: HH+AR_FLR_RAS_NO3J, FOV: 240" x 240", 5s exp with 2" slit - 13 min. Pointing should be in the middle of SNIFS FOV (to be provided)

other participating instruments

IRIS requests:
The IRIS team has already approved the proposal. N.B. please roll the slit by 90 degrees in each case as we would want to maximize the coverage with SNIFS FOV.
1. 3620205433 | Large coarse 8-step raster 14x120 8s Si IV Mg II h/k Deep x 2 Spati | 23.78 | 7.04 | 0.20 | 3.0+/-0.1 | 23.8+/-0.0 | 0.0+/-0.0 | 11.9+/-0.1 | 11.8+/-0.1 | 0.0+/-0.0

2. 3620105433 | Large coarse 8-step raster 14x120 8s Si IV Mg II h/k Deep x 2 Spati | 24.73 | 27.58 | 0.76 | 3.1+/-0.1 | 24.8+/-0.0 | 0.0+/-0.0 | 12.4+/-0.1 | 12.3+/-0.1 | 0.0+/-0.0

3. 3620107423 | Large coarse 4-step raster 6x120 4s Si IV Mg II h/k Deep x 4 Spatia | 20.57 | 15.85 | 0.52 | 5.2+/-0.1 | 20.6+/-0.1 | 0.0+/-0.0 | 10.3+/-0.1 | 10.2+/-0.1 | 0.0+/-0.0

remarks

Dates: July 17 2025
Time window: The launch window is 1 h on July 17th, from 19:00 to 20:00 UT. We will observe between t+70s to t+530s, where 't' is the launch time. So, if we launch at 19:00 UT, we will observe from 19:01:10UT to 19:08:50 UT. But, if we launch at the end of our window at 20:00 UTC, we could possibly observe out until 20:08:50 UT.

Target(s) of interest: 1. Active Network 2. Active region. Both targets will be observed with one pointing by SNIFS because of its dual channel configuration.

Previous HOPs: HOP 402, HOP 409, HOP 245

Additional remarks:
Please cc Phil Chamberlin (SNIFS PI, Phil.Chamberlin@lasp.colorado.edu) and Souvik Bose (sbose@seti.org) to all the emails as V. Polito will be traveling and possibly with limited internet access the days before the launch.