FlowdownSummary < Keck/NGAO

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---+++ NGAO Performance Flowdown Worksheets
A performance flowdown is the allocation of error terms to constituent subsystems or components

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---++  Update (4/25/10): The performance flowdown budget has been placed under configuration control [[ConfigControl][here]].
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---+++  Remaining Tasks for Version 1 release (status as of 9/2/09)

   * Dekany to update WFE/EE budget tool according to 'Action Items' column of the Flowdown Summary, Summary worksheet
   * Dekany to confirm consistency with 'Rainbow Chart'
   * Various to update Contour database to reflect requirements consistent with Version 1 reconciled flowdowns
      * Everyone to check cognizant engineer name atop each sheet for the sheets they are to interpret as updates to the Contour database functional requirements
      * Some flowdown sheets may generate new functional requirements (e.g. uptime req's?)

---+++  Remaining Flowdown Tasks for Version 2 release scheduled Feb 2010 (status as of 9/2/09)

   * Reni K. to model non-correctable aberrations in the AO system and post results
   * Neyman (TBC) to work on initial System Uptime MTBF flowdown
   * Gavel to update HO and TT bandwidth latency model to reflect servo design choices
   * Bouchez to provide perform flowdown from tip-tilt star hand-off sequence during long non-sidereal target observations
   * Lu & Dekany to continue refinement of crowded and sparse field relative astrometry budgets
   * Troy to implement TWFS error budget and perform TWFS sky coverage calculations

---+++  Component Flowdowns (now obsoleted - refer only the Flowdown Summary (above)

|  *Performance Parameter*  |  *Flowdown *  |  *Owner*  |  *Version*  |  *Date*  |
|  Pupil registration <br> (has been extensively modified in Flowdown Summary)  |[[%ATTACHURL%/NGAO_Flowdown_Budget_Summary_VV_rev1.xls][.xls]]  |  Velur  |  0.1  |  20 May 2009  |
|  NCP long exposure  |^|^|^|^|
|  NCP non-sidereal  |^|^|^|^|
|  !PnS HOWFS transmission  |^|^|^|^|
|  Internal LOWFS aberrations  |^|^|^|^|
|  Dither errors budget  |^|^|^|^|
|  LGS BTO transmission  |[[%ATTACHURL%/LGS_FacilityTrans_WFE_Budgets_V0.1.xls][.xls]] | Stalcup |  0.3  | 19 Aug 2009 |
|  LGS spot size  |^|^|^|^|
|  Go-to wavefront errors  |[[%ATTACHURL%/NGAO_Flowdown_Budget_Summary_97_v0_8.xls][.xls]] | Dekany |  0.8  | 26 May 2009 |
|  Relative astrometry errors <br> (under revision by J. Lu)  |^|^|^|^|
|  Bandwidth / latency flowdown  |[[%ATTACHURL%/RTC_errorBudget_per_KAON644.xls][.xls]] | Gavel |  0.2  | 17 Aug 2009 |
|  Acquisition time  | [[%ATTACHURL%/acq_time_budget_v0.2.xls][.xls]] | Bouchez |  0.2  | 19 May 2009 |
|  Transmission and Emissivity  | [[%ATTACHURL%/ThroughputEmissivity_v8_(version_1).xls][.xls]] | Kupke |  8  | 15 July 2009 |
|  System Uptime (link to sys. eng. page) | [[http://www.oir.caltech.edu/twiki_oir/pub/Keck/NGAO/SystemsEngineeringGroup/UptimeTool_v1.0.xls][link]] | Neyman |  1  | 2 July 2009 |

Attachments

Topic attachments
I	Attachment	History	Action	Size	Date	Who	Comment
xls	LGS_FacilityTrans_WFE_Budgets_V0.1.xls	r4 r3 r2 r1	manage	78.5 K	2009-08-20 - 02:47	UnknownUser	LGS facility transmission and WFE budget flowdown
xls	LaserWorkingBudget.xls	r1	manage	30.5 K	2009-05-20 - 22:56	UnknownUser	Laser Nudget
xls	NGAO_Flowdown_Budget_Summary_97_v0_8.xls	r1	manage	140.5 K	2009-05-27 - 06:05	RichardDekany
xls	NGAO_Flowdown_Budget_Summary_VV_rev1.xls	r2 r1	manage	287.0 K	2009-05-26 - 21:42	UnknownUser
xls	RTC_errorBudget_per_KAON644.xls	r1	manage	108.5 K	2009-08-18 - 15:48	RichardDekany
xls	ThroughputEmissivity_v8_(version_1).xls	r1	manage	5345.5 K	2009-07-24 - 00:42	RichardDekany
xls	acq_time_budget_v0.2.xls	r1	manage	57.0 K	2009-05-27 - 19:07	UnknownUser

Topic revision: r19 - 2010-04-26 - RichardDekany

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