[Isocops] IBEX Orbit# 148 ATS v001 - approve.

Fri Nov 18 18:52:40 EST 2011

All,
	I have looked at the Orbit 148 ATS v001 and -Lo gain test ATS

IBEX_2011_335_o0148a_v001.txt
IBEX_2011_335_o0148b_LoGainTest_v001.txt

and I approve. Lots of special operations.

	No constraint violations per IBEX_2011_335_o0148a_v001.ccvr.

	The PL commands in the ATS v001 match the STF v002

IBEX_2011_335_o0148a_v002.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_335_o0148a_v001.oef

	No Moon in -Lo FOV PMT setback commands and none needed per the .oef.

	Ground station contact times per

IBEX_Orbit147Contacts_v001.txt

match S/C commands for all 3 contacts.

	Battery cell balancing this orbit is more than an hour from 
anything except a star tracker outage, which is not relevant.

	Inertial maneuver at the end of orbit 147 left us pointing in 
a safe direction for ascending and descending macros during first 
half of orbit:

[tapley at ena ~]$ ibex_rotate -o -u -0.395147,-0.837642,-0.377113 -w 
ibex-sun -t 2011/12:02:11:13:57
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.395147,-0.837642,-0.377113
  which is     R.A. +244.745 Decl. -22.155
  missing      R.A. +248.101 Decl. -21.901 (ibex-sun)
  error is     R.A.   +3.356 Decl.  +0.254
  for a total  3.121 deg
[tapley at ena ~]$ ibex_rotate -o -u -0.395147,-0.837642,-0.377113 -w 
ibex-sun -t 2011/12:06:11:02:11
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.395147,-0.837642,-0.377113
  which is     R.A. +244.745 Decl. -22.155
  missing      R.A. +252.305 Decl. -22.472 (ibex-sun)
  error is     R.A.   +7.560 Decl.  +0.317
  for a total  7.000 deg

	Sun-pointing maneuver at apogee leaves us pointing in a safe 
direction at maneuver and at following Ascending and Descending 
Macros.
	NOTE: sun angles for second half of this orbit and first half 
of next orbit will be unusually small, so possibly more solar wind 
contamination?

[tapley at ena ~]$ ibex_rotate -o -r +252.387 -d -22.481 -w ibex-sun -t 
2011/12:06:12:50:59
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.279592,-0.880691,-0.382377
  which is     R.A. +252.387 Decl. -22.481
  missing      R.A. +252.387 Decl. -22.481 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r +252.387 -d -22.481 -w ibex-sun -t 
2011/12:06:14:21:05
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.279592,-0.880691,-0.382377
  which is     R.A. +252.387 Decl. -22.481
  missing      R.A. +252.455 Decl. -22.489 (ibex-sun)
  error is     R.A.   +0.068 Decl.  +0.008
  for a total  0.063 deg
[tapley at ena ~]$ ibex_rotate -o -r +252.387 -d -22.481 -w ibex-sun -t 
2011/12:10:14:17:00
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.279592,-0.880691,-0.382377
  which is     R.A. +252.387 Decl. -22.481
  missing      R.A. +256.946 Decl. -22.905 (ibex-sun)
  error is     R.A.   +4.559 Decl.  +0.424
  for a total  4.227 deg

	Sun-pointing maneuver at perigee leaves us pointing in a safe 
direction at maneuver and at following Apogee.

[tapley at ena ~]$ ibex_rotate -o -r +257.339 -d -22.927 -w ibex-sun -t 
2011/12:10:22:18:31
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.201867,-0.898607,-0.389558
  which is     R.A. +257.339 Decl. -22.927
  missing      R.A. +257.339 Decl. -22.927 (ibex-sun)
  error is     R.A.   +0.000 Decl.  +0.000
  for a total  0.000 deg
[tapley at ena ~]$ ibex_rotate -o -r +257.339 -d -22.927 -w ibex-sun -t 
2011-12-15T18:16:00.163Z
Quaternion    +0.000000,+0.000000,+0.000000,+0.000000
  points axis  +1.000000,+0.000000,+0.000000
  towards ECI  -0.201867,-0.898607,-0.389558
  which is     R.A. +257.339 Decl. -22.927
  missing      R.A. +262.529 Decl. -23.291 (ibex-sun)
  error is     R.A.   +5.190 Decl.  +0.364
  for a total  4.787 deg

	No O-mode this orbit.

	No overlaps to orbit 147 by manual check or by reference to 
http://ibex.unh.edu/cgi-bin/ats.cgi.

	Command Approval Checklist attached. Sun-burn checklist later.

	-Hi collimator voltage set higher on first arc only.

	-Lo Gain test in separate ATS.

At 7:08 -0500 11/18/11, Ibex Mission Operations wrote:
>Guys,
>      Here are the (2) ATS and planning files for Orbit# 148.
>ATS approval/comments will be needed before 21 Nov 11 @1530 UTC
>
>  1. IBEX_2011_335_o0148a_v001
>    - Contains (2) sun maneuvers this orbit due to start tracker 
>outtages this orbit
>    -  Start Tracker Outage times are noted on the ATS
>    -  Battery Balancing at perigee
>    - IBEX_Lo Gain Test command times are noted on the ATS
>    - Will be uploaded during Orbit# 146 Perigee
>
>2. IBEX_2011_335_o0148b_v001
>    - Contains the IBEX_Lo Gain Test Commands
>    - Will be uploaded during Apogee of Orbit# 147 due to the number 
>of commands the command buffer can hold

-- 
						- Mark     210-379-4635
-----------------------------------------------------------------------
Large Asteroids headed toward planets
inhabited by beings that don't have
technology adequate to stop them:

				Think of it as Evolution in Fast-Forward.
-------------- next part --------------
A non-text attachment was scrubbed...
Name: IBEX-Cmd-App_O148_MT.doc
Type: application/msword
Size: 78848 bytes
Desc: not available
Url : http://lists.sr.unh.edu/mailman/private/isocops/attachments/20111118/c2960117/IBEX-Cmd-App_O148_MT-0001.doc 