[Isocops] IBEX Orbit# 146 ATS v001 - approve.
Mark Tapley
mtapley at swri.edu
Mon Oct 31 14:49:34 EDT 2011
All,
I have looked at the Orbit 146 ATS v001
IBEX_2011_317_o0146a_v001.txt
and I approve.
No constraint violations per IBEX_2011_317_o0146a_v001.ccvr.
The PL commands in the ATS v001 match the STF v001
IBEX_2011_317_o0146a_v001.stf
per Ken's script (thanks!).
PL ascending and descending operations make sense with
respect to 15 Re ascending, Apogee, and 15 Re descending times from
IBEX_2011_317_o0146a_v001.oef
Moon in -Lo FOV PMT setback commands match the .oef, although
ATS commands are inside of .oef times (by ~11 hours start, ~3 hours
end) as usual.
Ground station contact times per
IBEX_Orbit146Contacts_v001.txt
match S/C commands for all 3 contacts.
Battery cell balancing takes place more than an hour from anything.
Inertial maneuver at the end of orbit 145 left us pointing in
a safe direction for ascending and descending macros during first
half of orbit:
[tapley at ena ~]$ ibex_rotate -o -u -0.667433,-0.678024,-0.307921 -w
ibex-sun -t 2011/11:14:00:30:04
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.667433,-0.678024,-0.307921
which is R.A. +225.451 Decl. -17.934
missing R.A. +228.675 Decl. -18.022 (ibex-sun)
error is R.A. +3.224 Decl. +0.088
for a total 3.067 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.667433,-0.678024,-0.307921 -w
ibex-sun -t 2011/11:17:17:09:52
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.667433,-0.678024,-0.307921
which is R.A. +225.451 Decl. -17.934
missing R.A. +232.351 Decl. -18.974 (ibex-sun)
error is R.A. +6.900 Decl. +1.040
for a total 6.627 deg
Inertial maneuver at apogee leaves us pointing in a safe
direction at maneuver and at following Ascending and Descending
Macros.
[tapley at ena ~]$ ibex_rotate -o -u -0.604427,-0.725919,-0.328191 -w
ibex-sun -t 2011/11:17:18:58:40
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.604427,-0.725919,-0.328191
which is R.A. +230.218 Decl. -19.159
missing R.A. +232.429 Decl. -18.993 (ibex-sun)
error is R.A. +2.211 Decl. +0.166
for a total 2.096 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.604427,-0.725919,-0.328191 -w
ibex-sun -t 2011/11:17:20:28:46
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.604427,-0.725919,-0.328191
which is R.A. +230.218 Decl. -19.159
missing R.A. +232.494 Decl. -19.009 (ibex-sun)
error is R.A. +2.276 Decl. +0.150
for a total 2.156 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.604427,-0.725919,-0.328191 -w
ibex-sun -t 2011/11:22:08:59:58
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.604427,-0.725919,-0.328191
which is R.A. +230.218 Decl. -19.159
missing R.A. +237.339 Decl. -20.061 (ibex-sun)
error is R.A. +7.121 Decl. +0.902
for a total 6.768 deg
Maneuver at perigee leaves us pointing in a safe direction at
maneuver and at following Apogee.
[tapley at ena ~]$ ibex_rotate -o -u -0.536842,-0.768887,-0.347296 -w
ibex-sun -t 2011-11-23T01:25:33.711Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.536842,-0.768887,-0.347296
which is R.A. +235.077 Decl. -20.322
missing R.A. +238.074 Decl. -20.191 (ibex-sun)
error is R.A. +2.997 Decl. +0.131
for a total 2.815 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.536842,-0.768887,-0.347296 -w
ibex-sun -t 2011-11-27T10:17:15.627Z
Quaternion +0.000000,+0.000000,+0.000000,+0.000000
points axis +1.000000,+0.000000,+0.000000
towards ECI -0.536842,-0.768887,-0.347296
which is R.A. +235.077 Decl. -20.322
missing R.A. +242.558 Decl. -21.075 (ibex-sun)
error is R.A. +7.481 Decl. +0.753
for a total 7.038 deg
No more O-mode this orbit.
No overlaps to orbit 145 by manual check or by viewing
http://ibex.unh.edu/cgi-bin/ats.cgi.
Command Approval Checklist attached. NOTE: checklist does not
include -Hi neg. collimator HV setting step, which looks correct for
this orbit. Do we want a checklist update?
-Hi collimator voltage set higher at all ascending macro runs.
At 3:26 -0400 10/31/11, Ibex Mission Operations wrote:
>Guys,
> Here are the files and ATS for Orbit# 146.
>This ATS incorporates the change in the Hi negative collimator
>voltage for the ascending arc and the end of the O-MODE operations.
>Please respond to this email thread with your approvals/comments.
>All comments/approvals are due by 2 Nov 11 @ 2000 UTC
--
- Mark 210-379-4635
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