JANUARY 17, 1997
SPWG MEETING MINUTES
Chair: Piet Martens (SOC)
Minutes: Laura Allen (SOC)
Attendees: Ken Dere (EIT), Philippe Lemaire (SUMER), Don Hassler (SUMER),
Ray O'Neal (UVCS), Silvano Fineschi (UVCS), Dermott Mullan
(COSTEP/ERNE), Andrzej Fludra (CDS), Joe Covington (MDI),
Julia Saba (MDI), Craig DeForest (MDI), Simon Plunkett (LASCO),
Brigitte Schmieder (Meudon), Udo Schuehle (SUMER), Doug
Biesecker (LASCO)
New Action Items:
97_1.1: On SOC's to append appropriate JOP version to record of each executed
JOP in campaign catalog.
97_1.2: On ESA SOC to investigate whether previous JOP versions -- if run --
can be restored.
1 Review of action items
----------------------
- All previous action items closed
2 Boundary conditions for the coming month
----------------------------------------
- January 31: Deadline for input to script of March roll maneuver
- February 1: SVM Memory Dump (6 hours, no experiment commanding)
- February 7: OCD deadline for MDI continuous at noon local
- MDI Continuous: 2/13 7:55 UT - 2/17 5:30 UT
3 Priorities for the coming month
-------------------------------
a) Individual instrument plans
------------------------------
SUMER - Targets of opportunity, statistics program of bright points.
not a lot of collaborations planned. In May SUMER plans to move their
slit West to intercept polar crown, near limb. Dermott Mullan points
out this will be an ideal time for a JOP049 with SUMER in that position
(May and June)
SUMER will be testing a rotation compensation mode next week -- for an
active region at central meridan may be helpful, only want to use it
when really needed
CDS -- 1) Abundances (JOP021) - would like to do this in the next two months
with SUMER in current position. MDI submitted SOI proposal use high
resolution field-of-view to do abundance studies and would also
be interested in participating
2) Filling factors in loops (Klimchuck JOP-leader). CDS/EIT/Yohkoh
MDI if on disk.
3) Resuming GIS operations, this Monday loading a new GIS patch
quiet sun, active region studies -- as a precaution they loaded
a patch to prevent slit motor from overheating just being cautious.
4) Coronal hole studies (target of opportunity)
5) Request to run filament movies with the wide slit to supplement
JOP009. Probably have other instrument teams consider running similar
movies. EIT's participation with filament observations/movies would
depend on the filament's location -- unless close to the limb, they
do not see much. Proposal to make this a joint effort, also involving
Yohkoh/SXT
MDI at brought up the idea of a joint program to track photospheric
oscillation up into the chromosphere. However, one would need to
observe every minute or two.. MDI and CDS to talk off-line
about resolution considerations for such a study.
6) New synoptic program which would use the wider slit, and take
half the time of regular synoptic to run.
7) Quiet sun studies with MDI (high cadence, end of February)
EIT -- First priority is more telemetry. No Jops have been submitted this
month so will depend on EIT planners: Ken Dere for next two weeks then
Simon Plunkett. Trying to coordinate with MDI Hi-Res.
LASCO - similar priorities to EIT (more telemetry). Working on a reduced
synoptic program and experimenting with partial frame images. LASCO
is trying to do more specialized observations while continuing more
or less with the same synoptic program.
UVCS -- involved in coronal hole and streamer studies throughout Feb and March
as far as they know mostly UVCS only. Week 9 starting, February 24 good
for joint UVCS/LASCO studies. From March 24 to 30 would like to schedule
EIT/UVCS collaborations.
MDI -- in the next two months MDI wants to emphasize collaborations because
starting April 13 will begin the long 3 month continuous contact which
will be reserved for helioseismology.
Displayed a viewgraph of some types of data products they can provide:
MDI Mode FOV Notes
-------- ----------- ------
FD_m1_f1 full disk filtergrams compress well can get two
down in one minute
FD_me_ve 3/4 full disk partial disk, can choose N, S pointing
FD_m1_v2 full disk
HR_m1_v2 MHR priority mode for extra-long DSN
contacts
HR_ve_fe_me 1/2 MHR 10.5 arcmin E--W X 5 arcmin N--S
can choose N, S pointing
HR_t_ve_fe_me 1/2 MHR 5 arcmin E--W X 10.5 arcmin N--S
tracking mode possible
can choose E, W pointing
FD_HR_rocket alternate @ active sun magnetograms
2 minutes: alternates full disk and high res
full disk/MHR
m - magnetogram
v - velocity / dopplergram
f - filtergram
MHR - MDI high resolution field-of-view
MDI would like to come up with a version of the blinkers (aka a possible
new JOP059) that doesn't involve SUMER scanning and would like to have a
longer duration. MDI would like to emphasize quiet sun studies for the
next 2 months, except when a good active region target is in the high
resolution field-of-view. MDI also would like to redo another
blinkers campaign. The data from a previous blinkers campaign were
largely lost due to a Goldstone antenna problem -- only got 17 minutes
worth of data. Should probably write up blinkers campaign as a JOP.
MDI magnetograms may get somewhat noisier in the future, due to a thermal
adjustment intended to get rid of 96 minute period in helioseismology
data.
b) Intercalibration activities
---------------------------
For SUMER will do regularly, every 3 weeks run ICAL001. One for next week,
subsequent in mid-February
c) Joint observing plans
---------------------
See updated plans on SOHO Calendar.
Summary:
* Blinkers studies / a new JOP059
* MDI available for next 2 months
* UVCS/LASCO on streamers
* UVCS/EIT may collaborate at end of March
* Filament movies
* Filling factors
* Abundances - JOP021
* Explosive events
* Coronal Hole Studies
* EIT participates in MDI Hi-Res runs
4 JOPs status
------------
Campaign Catalog: SOC demonstrates Web-page that JOP and campaign leaders can
use to update/complete the information on their campaign in the campaign data-
base. This page is now accessible from everywhere, but the input to the data-
base is screened by the SOC's (to avoid hoaxes). JOP leaders will receive
reminders to update from Robert Doney. The same page provides also access to
the database for searches.
The SPWG would like to see each JOP run record accompanied by the appropriate
version of the JOP -- on the Web only the latest versions of JOPs have been kept.
Action on SOC's. Piet Martens will look to see if previous versions can be
restored.
5 New JOPs
---------
Don Hassler presented a new intercalibration JOP: ICAL011.
Sounding Rocket Flight Overview:
The Woods/Hassler sounding rocket payload consists of a suite of XUV
and EUV full disk irradiance instruments (Tom Woods, PI) and EUV
coronal imagers (Don Hassler, PI) which are radiometrically calibrated at
NIST/SURF. The next flight is scheduled to be launched at 1800 UT on
April 19, 1997, however, the exact launch date will depend on solar
conditions. The primary objective of the irradiance instruments for this
flight is to obtain a radiometrically calibrated "typical" or "characteristic"
solar minimum full disk EUV solar spectrum, and provide a radiometric
calibration for SOHO. The primary objective of the EUV imagers is to
measure the coronal helium abundance (with respect to hydrogen), as well
as provide radiometrically calibrated full disk images to compare with the
irradiance observations and SOHO observations.
For full details and contributions wanted from each SoHO instrument,
this will be placed on the SoHO Web pages. As mentioned earlier, the
scheduled for April 19th +/- 2 weeks around 18:00 UT +/- 1 hour.
Would like to get EIT images as close as possible in time to the rocket
flight.
Would need to have trial run several weeks in advance.
6 AOB
---
Ground Based Campaigns:
-----------------------
Brigitte Schmieder discussed some future ground-based campaigns involving
at least SUMER and CDS. She would like support from SoHO for the following
dates between the hours of 7 to 11 UT:
* 27 May and 5 June with Pic du Midi -- would support from EIT
MDI will be in continuous contact and cannot support this.
* 25 Sept to 5 October with Tenerife, German and Swedish telescopes
- JOP012 for prominences/JOP017 for filaments and active regions
- MDI could have high rate data perhaps to support but may need
to request an additional DSN antenna in advance to support the
study with high-rate data at the hours of 7 - 11 UT.
Upcoming Roll Maneuver in March:
--------------------------------
Since the deadline for inputs for the FOT was discovered on Tuesday of
this week to be on January 31, 1997 -- Laura Allen did an overview of
the e-mail that was sent out to the SoHO Community the previous day.
The primary instruments driving this roll are MDI and SWAN. MDI is to
check on such requirements as: is a 30 minute dwell necessary, is 25
minutes acceptable..? Also to check on contingency plans should we
be running severely behind during the roll maneuver (if we lose 2 hours
due to DSN antenna problem, for example...)... do we cut the dwell times
or the number of slews..?
CDS basically does not have any plans yet to use these dwell times at
various positions. EIT does not have any special plans to use the existing
dwells either at this point.
After the SPWG meeting, SUMER expressed interest in doing a short
reference spectrum at each of the MDI dwell positions, and then a long
scan at the SWAN dwell at +90 degrees.
Instrument teams may want to take note of the fact that the FOT may be
desiring a lot of activity input earlier than usual in the future.
Primarily, a few FOT people will be required to spend more time with
re-engineering tasks.
Adjourned: 12:00 PM