(This page should ultimately be replaced by a JIRA query against the envisioned future JIRA reimplementation of the change request database, using labels to represent "DM is interested in this". At the moment it is manually maintained.)
This page is manually maintained (primarily by Gregory Dubois-Felsmann and Tim Jenness). It contains change requests originated by DM as well as ones from or affecting other LSST subsystems which the editors believe will be of interest to DM staff. It also omits certain manifestly DM-related change requests that are primarily concerned with PMCS technicalities and will not be subject to full CCB action. These change requests are always available by querying the database for DM-originated requests. The editors welcome comments on this policy!
We are not generally including LCRs concerning matters like budget adjustments and routine milestone changes.
Principal references:
- LSST Change Request database
- Query for change requests originated by DM (note that this will not capture all the requests in the table below)
- LSST Change Control Process, LPM-19
| LCR | Title | State | Documents Affected | Summary and comments | Related Issues |
|---|---|---|---|---|---|
| LCR-2045 | Commissioning De-Scope LSSTCam Observing and SV Mini-Surveys | ASSIGNED | Removes 2 months of Science Pipelines testing from the Commissioning Plan. Reduces SV mini-survey from 3 months to 2 months, resulting in smaller survey areas. | ||
| LCR-2008 | Restore OSS-REQ-0033 | APPROVAL PENDING | LSE-30 (OSS), LSE-61 (DMSR, flowdown only) | OSS-REQ-0033 was removed from the OSS by LCR-899. It has recently been discovered that this broke the flowdown for two existing DM requirements, but also that this requirement applies in some respects to the whole Observatory, not just to the scheduler itself. | |
| LCR-2004 | OSS Omission/Typo in OSS-REQ-0387 | FULLY IMPLEMENTED | LSE-30 (OSS), LSE-61 (DMSR) | OSS-REQ-0387 (Photometric Performance) was belatedly flowed down from the LSR in LCR-924. This change request corrects a transcription error from the implementation of that LCR, as well as fixing a long-standing typo in the transcription of these parameters from the SRD. | |
| LCR-1934 | LPM-72 Scope Options Update | FULLY IMPLEMENTED | LPM-72 | ||
| LCR-1933 | Put Lower Bound on Prompt Data Delivery - L1PublicT | STUDIED | LSE-29 (LSR), LSE-30 (OSS), LSE-61 (DMSR) | Introduce a requirement not to release Level 1 / Prompt data products, other than alerts, before L1PublicTMin (6 hours, TBR) after image acquisition. | |
| LCR-1923 | De-Scope Camera DAQ Crosstalk Correction Support | STUDIED | LSE-59 | Camera would like to descope the requirement to provide crosstalk correction in the DAQ (that had been intended to support Alert Production). Inter-CCD crosstalk within a raft has been measured to be very small; inter-raft crosstalk is expected to be very small as well and will be measured soon. Consequence: if the Camera does not do it, then DM will have to do it in AP. If it's limited to intra-CCD crosstalk, then this is already within the HSC experience base and probably has little impact; if it's inter-CCD, intra-raft, though, it has a significant architectural impact on AP and may also have a real impact on the alert latency budget. (If there is inter-raft crosstalk, there's no existing architecture to handle it and we have a significant risk.) | |
| LCR-1854 | Rectify DM Science Budget | FULLY IMPLEMENTED | PMCS | "Science staff are increasing under 2C.02.02 - the verification scope in 2C.09.02 is moving into science." | |
| LCR-1843 | OSS Corrections | APPROVED | LSE-30 (OSS) | (Primarily) typographical corrections to OSS requirements arising from the analysis of the document to develop well-defined verifications. | |
| LCR-1809 | Update of Master Security Policy | FULLY IMPLEMENTED | LPM-121 | "... require the selection of specific security controls for each subsystem's computational resources. Additionally, the master security plan now requires the implementation of a small set of baseline controls for all LSST systems unless sufficient justification has been made and a variance has been granted (or unless prohibited by a site's own security policies). ..." | RFC-326 - Getting issue details... STATUS |
| LCR-1788 | Modify LSE-68 to Reflect Actual Interface | FULLY IMPLEMENTED | LSE-68 | "The DAQ API delivers pixel data in an in-memory representation different from the ICD. This LCR changes the ICD to match the API, as it is considered infeasible to change the API to match the ICD." | |
| LCR-1728 | Update Science Platform Vision Document LSE-319 to Current Design | FULLY IMPLEMENTED | LSE-319 | Updating "LSE-319 to better match the current state of the LSP design and nomenclature. The major changes are to more explicitly describe what is meant by 'next-to-data' processing and to confirm the VO-orientation of the LSP interface design." | |
| LCR-1711 | Update Summit and Base IT and Networks Plan | FULLY IMPLEMENTED | (PMCS) | ||
| LCR-1703 | Fix Conflicting LSR (LSE-29) Requirements | APPROVED | LSE-29 | Remove normative text which refers to the use of snap differencing for cosmic ray rejection, as it is in conflict with the existing requirement to support the Alternate Standard Visit (1x30s). | |
| LCR-1664 | Specify Scientific Visualization Coordinate System for Camera Data | APPROVED | LSE-30, LSE-349 (new) | Adopt LSE-349, "Defining the Transformation Between Camera Engineering Coordinates and Camera Data Visualization Coordinates", as a baseline, and insert reference to it into the OSS (LSE-30). | |
| LCR-1578 | DM-10 Delay DM Portal Development | FULLY IMPLEMENTED | Implements Portal descope DM-10. Some details in DMTN-096. | PST-62 - Getting issue details... STATUS | |
| LCR-1565 | Correction to LCR-1403 Implementation | FULLY IMPLEMENTED | See original LCR below. | ||
| LCR-1563 | Update Identity Management Concept of Operations | FULLY IMPLEMENTED | LSE-279 | Adding LDAP group naming conventions for LSP/DAC access rights. | |
| LCR-1554 | Correct flowdown of residual ellipticity correlation requirements to LSR and OSS | APPROVED | LSE-29, LSE-30 | Update: The problem was found to originate in the flowdown from the SRD to the LSR. The LCR has been modified with new language for both the LSR and OSS that, finally, correctly implements the SRD specification. Outside the scope of the LCR, the DM-SST is researching whether the original SRD requirement still properly supports the needs of weak lensing science. OSS-REQ-0234 (10-year Ellipticity Residuals) and OSS-REQ-0390 () are almost duplicates and clearly redundant. One should be removed. There is also a parent requirement, OSS-REQ-0389 () that is not very useful. There are also indications that the flowdown from the SRD to the LSR and OSS was not done correctly; Jim Bosch and Gregory Dubois-Felsmann are investigating. | |
| LCR-1553 | Update LSE-239: Base Facility Data Center Design Requirements | DENIED | LSE-239 | Primarily updates intended to assist the verification process. (Denied: to be handled entirely in JIRA.) | |
| LCR-1503 | Parallelize Camera Reverification on LSSTCam and ComCam on Telescope | FULLY IMPLEMENTED | (PMCS) | Parallelize on-sky data collection with ComCam with "white room" reverification of the full Camera on-Summit. | |
| LCR-1494 | Add LSE-400 as an ICD for Header Service | FULLY IMPLEMENTED | LSE-400, LDM-638 | Promote Header Service requirements to system level, in effect. | |
| LCR-1478 | Remote Monitoring of System Operations | APPROVED | OSS (LSE-30) | Clarify and limit remote monitoring expectations with a new OSS requirement. Supersedes LCR-1278 (Remote Monitoring of System Operations). | |
| LCR-1473 | Update LPM-19 Change Control Process | FULLY IMPLEMENTED | LPM-19 | Limit membership of CCB, clarify voting process. | |
| LCR-1465 | Additional OSS Requirements Flowdown to LSE-61 | FULLY IMPLEMENTED | LSE-61 | Flow down OSS provenance requirements (OSS-REQ-0172, OSS-REQ-0122) and reproducibility requirement (OSS-REQ-123) to additional DM requirements | DM-14067 - Getting issue details... STATUS |
| Update LSE-61 DMS-REQ-0274 Re: Alert Packet DIASource History Retention | FULLY IMPLEMENTED | LSE-61 | Update requirement DMS-REQ-0274 to be in sync with the DPDD (LSE-163) to indicate that only 12 months of DIASource history will be included in the alert packets. | ||
| LCR-1459 | Updates to the Data Products Definition Document, LSE-163 | FULLY IMPLEMENTED | LSE-163 | ||
| LCR-1426 | Refine LSE-68 DAQ-DM interface | FULLY IMPLEMENTED | LSE-68 | Refine interface with regard to image naming, metadata, units, and events. | |
| LCR-1425 | Modify DMS requirements to include creation and display of HiPS and MOC data | FULLY IMPLEMENTED | LSE-61, then consequentially LDM-151, LDM-554, and the Sizing Model | Implements RFC-441 - Getting issue details... STATUS . | |
| LCR-1424 | Define Image Naming Convention | APPROVED | LSE-30, LSE-71, LSE-72, LSE-62 | Specify the identifiers to be applied to image data at the time of acquisition and ingest to DM. | |
| LCR-1420 | Update LSE-140 including LCR-733 | FULLY IMPLEMENTED | LSE-140 | This LCR applies LCR-733 to LSE-140 and corrects some other minor issues. It does not attempt to fully define the telemetry items expected from the auxiliary instrumentation; that will be left for a later LCR. | |
| LCR-1419 | Remote Operability | FULLY IMPLEMENTED | LSE-30, LSE-62 | ||
| LCR-1405 | Rewrite OSS-REQ-0161 | APPROVED | LSE-30 | This is the "Deep Detection and Measurement Quality" requirement. It is argued that it is "both unhelpful to scientists and awkward for DM to implement now" and "asking for something DM is not planning to deliver because it's not actually something anyone wants." | LIT-94 - Getting issue details... STATUS |
| LCR-1403 | Update Base and Long-Haul Network Activities | FULLY IMPLEMENTED | NA | The Base Network plan has been delayed relative to the baseline due to the updated schedule for construction and occupancy of the Base Facility. This LCR reflects the updated dates. The US Network plan has been delayed while we coordinated with ESnet for dedicated 2 x 100 Gbps links between Atlanta and Chicago. The ESnet links provide additional path diversity and guaranteed latency for prompt processing over leased service from internet2. This coordination is documented in a request document and technical requirements document, which when finalized will be posted in docushare. The activities and dates in this LCR reflect the implementation plan and schedule for the ESnet links. | |
| LCR-1395 | Proposed Data Rights Policy Document LPM-261 | STUDIED | LPM-261 | Codifies a proposed data rights and data access policy. Will require SAC review and agency approval. | |
| LCR-1392 | Restore requirement to OSS from LSE-369 scheduler requirements | FULLY IMPLEMENTED | LSE-30 | Add OSS-REQ-0378 back to OSS so that DM tracing will work correctly. | LCR-899 |
| LCR-1375 | Update Base Data Center IT Installation and Configuration Activities | FULLY IMPLEMENTED | NA | Add Base Data Center activities in PMCS LCR-1367 folded into final version, which required going for NSF approval. | |
| LCR-1367 | Change DLP-533 Milestone and Predecessors | DENIED | "Denied" but in practice folded into LCR-1375. | ||
| LCR-1364 | Updated LSE-131 (EPO/DM ICD) | FULLY IMPLEMENTED | LSE-131 | Mainly reduction of scope. | |
| LCR-1353 | Reorganization of Early Integration Activities | FULLY IMPLEMENTED | PMCS | Clarification and augmentation of the list of planned cross-subsystem early integration activities. | |
| LCR-1348 | New Reference Simulated Survey, baseline2018a | FULLY IMPLEMENTED | |||
| LCR-1344 | Add Performance Metrics to LSE-61 | FULLY IMPLEMENTED | LSE-61 | Add database and image access requirements and ability to calculate science KPMs. | |
| LCR-1343 | Revisions to LSE-239 Base Data Center Requirements | FULLY IMPLEMENTED | LSE-239 | ||
| LCR-1332 | Update LSE-30 (OSS) to Better Define OSS-REQ-0164 | FULLY IMPLEMENTED | LSE-30 | Improves and modernizes the language concerning the definition of completeness and reliability tests for DM. | LIT-388 - Getting issue details... STATUS |
| LCR-1309 | Update DM Documentation Regarding Special Programs | FULLY IMPLEMENTED | LSE-29, LSE-30, LSE-61 | ||
| LCR-1302 | LSR-REQ-0034 Clarification | FULLY IMPLEMENTED | LSE-29 | Clarify the requirement concerning the saving of Observatory engineering data and the like. | LIT-100 - Getting issue details... STATUS |
| LCR-1243 | Update LSE-239 Base Data Center Requirements | FULLY IMPLEMENTED | LSE-239 | LSE-239 was developed to provide the definition of the Base Data Center (BDC) requirements for the Base construction contracts and the BDC Information Technology and Communications (ITC) infrastructure design. Since that version, much has been learned and the requirements have been migrated into the project SySML requirements model. A new version of LSE-239 has been prepared as a document generated from Magic Draw, and has also been substantially re-organized, to more cleanly separate those sections directly applicable to the Base Facility construction contract (Sections 1 - 3), versus those more targeted at the ITC infrastructure design (Appendices I and II). Finally, as the formerly baseline Tape Library has been recommended to be replaced in the BDC ITC design baseline (LCR-781 and follow-on), requirements related to the Tape Library have been deprecated into Appendix III. | |
| LCR-1238 | Implement DM and OSS part of LCR-786 | FULLY IMPLEMENTED | LSE-61, LSE-30 | ||
| LCR-1230 | Update to LSE-75 | FULLY IMPLEMENTED | LSE-75 | Defining feedback for Active Optics and guider. KTL rewording with more specifics after discussion with Sandrine. | |
| LCR-1214 | Clarify DM's Level 1, 2, and 3 Terminology for the Science Community | FULLY IMPLEMENTED | LSE-163, LPM-231 | Defines a new language for the three categories of data products, replacing Level 1, Level 2, and Level 3 in user-facing documentation. | |
| LCR-1203 | Searchable - Interactive Nightly Reports | APPROVED | Need to determine what DM will need to do to meet this requirement. | ||
| LCR-1154 | Stand Up Data Access Rights Working Group - Put LPM-221 under Change Control | FULLY IMPLEMENTED | LPM-221 | ||
| LCR-1070 | DM Milestones for Base LAN and Summit Network | FULLY IMPLEMENTED | |||
| LCR-1068 | Revised Commissioning Plan LSE-79 | FULLY IMPLEMENTED | LSE-79 | ||
| LCR-1065 | Date Update for the DM/EPO ICD Phase 3 Milestone | FULLY IMPLEMENTED | |||
| LCR-1064 | Add Priorities to LSE-61 | FULLY IMPLEMENTED | LSE-61 | Add priorities to the baselined version of the document that are already part of the MagicDraw model (added as part of DM-10647 - Getting issue details... STATUS ) | |
| LCR-1048 | Update Summit Network Installation Schedule | FULLY IMPLEMENTED | |||
| LCR-1034 | Auxiliary Telescope Spectrograph Instrument and Detector Schedule and Cost Update | FULLY IMPLEMENTED | Updates the schedule and cost of the procurement of the Auxiliary Telescope Spectrograph Instrument. Details of the change are not yet available (). | ||
| LCR-1024 | Tie LSE-163 into OSS | FULLY IMPLEMENTED | LSE-30 (OSS); others indirectly, LSE-61 | Resolves a long-running formal gap in our requirements flowdown. Makes the contents of the DPDD (LSE-163) authoritative in deriving DM-level requirements (i.e., in the DMSR, LSE-61) by stating in the OSS that the data products generated by DM shall conform to the DPDD. | |
| LCR-1021 | Adjust Dates for DWDM Equipment Installation | FULLY IMPLEMENTED | PMCS | Notes ~60 day delay in the installation of the Summit-Base and Base-Santiago DWDM equipment, triggered by late delivery from the equipment vendor. New schedule shows installations complete by roughly November 2017. | |
| LCR-1018 | Follow up to New Camera Image Types (LCR-773) to flow down requirements to subsystem specs and ICDs | FULLY IMPLEMENTED | LSE-59, LSE-71; DM impact to be analyzed | Adds the new image types introduced by LCR-773 (New Camera Image Types) to the Camera requirements and OCS-Camera ICD. Superficially this doesn't require a response in DM-level documents; however, the exploitation of the new image types is driven by calibration requirements and so most likely they should eventually appear in DM documents. Note that as of LCR-773 itself is Approved but not Fully Implemented. | |
| LCR-1013 | Place the LSST Science Platform Vision Document under Change Control | FULLY IMPLEMENTED | LSE-319 | ||
| LCR-1006 | Update DM-OCS ICD, LSE-72, to reflect DM design changes and to match recent LSE-70/LSE-209 | FULLY IMPLEMENTED | LSE-72, LDM-230 | Updates LSE-72 to match current design work. Incorporates changes from LCR-780 and LCR-888. | |
| LCR-1005 | LSE-209 Software Component Document Reformat and Reqs Refresh | REJECTED | LSE-209, likely LSE-72 | This is mostly a cleanup pass on a key OCS middleware definition document. The DM-to-OCS interface depends on its contents, so it's likely that some consequential changes to LSE-72 will be needed. | |
| LCR-1004 | Withdraw LSE-77, "Infrastructure Interfaces Between Data Management and the Base Facility" | FULLY IMPLEMENTED | LSE-77, possibly LSE-239 | In 2015, the project shifted from the then-existing DM-to-T&S ICD LSE-77 to a new "Base Data Center Requirements" document, LSE-239, to capture the needs of DM for data center space at the Base. LSE-77 became effectively a dead letter in the process. This change request is intended to just clean that up. Final result: LSE-77 has been withdrawn. | |
| LCR-983 | Integrate DM and Camera Data Systems Early | FULLY IMPLEMENTED | PMCS, possibly ICDs, LSE-61 | Perform additional early integration activities, notably around the use of the CCOB camera test facility to generate data to be ingested into DM on a regular basis. | |
| LCR-974 | Update Network Requirements in LSE-61 | FULLY IMPLEMENTED | LSE-61 | One new requirements, modifications to 3 others. | |
| LCR-964 | Summit Computer Room Requirements Document | FULLY IMPLEMENTED | LSE-299 (new) | Consolidates all planned compute hardware needed on the Summit (except what is actually in the domes). | |
| LCR-963 | Summit - Base ITC Design Document | FULLY IMPLEMENTED | LSE-309 (new) | Product of Jeff Kantor's Summit-Base Tiger Team Touches on almost all DM's interfaces with the other systems. | |
| LCR-962 | Flowdown LSE-163 (DPDD) to LSE-61 (DMSR) | FULLY IMPLEMENTED | LSE-163, LSE-61 | Includes a handful of unrelated requirements changes/additions. Some text updates to DPDD. | |
| LCR-952 | DM Management and Science Staffing | FULLY IMPLEMENTED | Assigns Wil O'Mullane as CAM for 02C.01.01 and 02C.02.*, and adds budget to support DM Science Analysts at UW. | ||
| LCR-943 | Minor updates to LSE-63 | FULLY IMPLEMENTED | LSE-63 (Data Quality Assurance Plan) | LSE-63 has not been updated since 2011. This update includes some minor modernizations based on current best practice and removes mention that we are currently in R&D phase. | |
| LCR-924 | Duplicate LSR Data Performance Metrics in OSS for DM Flow Down | FULLY IMPLEMENTED | LSE-30 (OSS) | Flows LSR-REQ-0093, LSE-REQ-0094 and LSR-REQ-0097 to OSS so that DM can include them in DMSR for verification of the performance metrics (via LIT-276 - Getting issue details... STATUS ). | |
| LCR-921 | DM to Provide Service for Publishing Predicted Visit Sequence | FULLY IMPLEMENTED | LSE-61 (DMSR) | Publish telescope position and predicted schedule to the community (via LIT-215 - Getting issue details... STATUS ). | |
| LCR-908 | Keep all Data Releases loaded in databases | FULLY IMPLEMENTED | LSE-30 (OSS) and many subordinate documents | Adopt the following requirement: "The LSST project shall maintain user access to the contents of all Data Releases. This facility may be provided with reduced performance and capacity for Data Releases older than the most recent one, but be qualitatively identical otherwise." in place of the current policy of maintaining access only to the two most recent data releases. | RFC-325 - Getting issue details... STATUS |
| LCR-900 | DM S17 Mid Cycle Replan | FULLY IMPLEMENTED | (PMCS) | Implement S17b plans for NCSA, SQuaRE, and AP with some small tweaks to other subsystems. | |
| LCR-899 | Scheduler Requirements Control | FULLY IMPLEMENTED | LTS-347, possibly LSE-62 | Promote the scheduler requirements in LTS-347 to project-level change control, moving them to an LSE-* document. | |
| LCR-888 | Proposed Meta-data header client for LSST images | FULLY IMPLEMENTED | LSE-72, LDM-230, probably numerous others | Proposes that a common Summit-Base service be created that extracts all observation metadata (from published telemetry or the EFD) intended to be packaged with the image files, storing an artifact containing all this metadata as "headers" for later retrieval. | Q: Does this have anything to do with the reformatted EFD database? -XW |
| LCR-851 | Update to LSE-151 | FULLY IMPLEMENTED | LSE-151 "Interface Control & Compliance Management Process" | Clarifies language surrounding ICDs and documents that describe or actually are the implementations of the interfaces controlled by ICD. | |
| LCR-849 | Update LSE-78 LSST Observatory Network Design | FULLY IMPLEMENTED | LSE-78 | LCR-849 is to make LSE-78 consistent with and refer to the Network Sizing document LDM-142. Requested CCB if this can be voted on via the electronic voting process. I think it is non-controversial and was discussed at some length in the DM TCT when we last updated LDM-142. It would be good to get this done, as there are a number of more significant changes to the same documents coming very soon as a consequence of Tiger Team activities. | |
| LCR-838 | Auxiliary Telescope Scheduler | FULLY IMPLEMENTED | LTS-187 (draft: SPT-372) | ||
| LCR-836 | Typographic correction to LSE-69 to match LSE-130 | FULLY IMPLEMENTED | LSE-69 | This is a trivial typographic correction that was requested a long time ago in LIT-183 - Getting issue details... STATUS . | DM-9336 - Getting issue details... STATUS |
| LCR-835 | Camera Heterogeneous Sensor Focal Plane | FULLY IMPLEMENTED | Implicitly sharpens requirements on ability to determine the correct pixel geometry upon data ingest from Camera to DM. May have an implication for the generation of difference imaging templates, at the (~annual) template-creation level and/or at the nightly template-warp-instantiation level. | ||
| LCR-795 | Updates to DM/EPO interface requirements (LSE-131) | FULLY IMPLEMENTED | LSE-131 | See substantive discussion in the DM Leadership Team Meeting 2017-03-20. | LIT-97 - Getting issue details... STATUS |
| LCR-788 | Transfer Task Framework from 02C.07 to 02C.06 | FULLY IMPLEMENTED | (PMCS) | Moves the Task class and a cluster of related classes and interfaces to be a responsibility of the SLAC group. | |
| LCR-787 | Commissioning Re-Plan 2016 | FULLY IMPLEMENTED | LSE-79 | See also the February 2017 Commissioning Review. Awaiting the report of the review committee. | |
| LCR-786 | Eliminate Base Network Outage Buffer; Expand Summit Camera Image Buffer | FULLY IMPLEMENTED | Unclear | Kevin Long is awaiting guidance on what WBS element to use for the additional budget for the enlarged buffer. The "documents affected" is "Unclear" because it has not been completely decided whether to implement this as a change to requirements or as a specification that exceed the requirement. This is a separate question both at system and at Camera level. | |
| LCR-785 | Observatory Operations Server | REJECTED | Unclear; may require a new ICD. Would also affect DM design documents. | ||
| LCR-783 | Commissioning Cluster Services | REJECTED | Appears in DM design documents | ||
| LCR-782 | Additional OCS Driven Services for Archive Center Access | FULLY IMPLEMENTED | LSE-72, possibly LSE-140 | Provide a means for the OCS to launch predefined batch processing actions at the Archive Center. Likely to be used for, e.g., producing synthetic calibration images following the collection of the input flats, bias frames, etc. | |
| LCR-780 | Eliminate Engineering & Facilites Database Copies in Offline Archive Centers | FULLY IMPLEMENTED | LSE-72, LDM-230 | Requires changing EFD interface with OCS to be the ingest to the Reformatted EFD. : discussed at an OCS-DM meeting. Further discussions planned for . | |
| LCR-773 | New Camera Image Types | FULLY IMPLEMENTED | LSE-30 (OSS) | Adds requirements for a pinhole filter and for the capability to take filterless images. | |
| LCR-747 | Unified LSST Authentication and Authorization Services | FULLY IMPLEMENTED | LSE-279 | Provides unified authentication and authorization technical services to assure authorized individuals access LSST services and systems. | |
| LCR-745 | Targets of Opportunity requirements | FULLY IMPLEMENTED | LSE-29 (LSR), LSE-30 (OSS), LSE-62 (OCS reqts.) | Provides requirement flowdown for the need to handle target-of-opportunity observing. | |
| LCR-733 | LSST CCD, CCS, and DAQ for the Auxiliary Telescope Spectrograph | FULLY IMPLEMENTED | LSE-140 and many others | Requires consequential changes to LSE-140 because of the change to direct spectrograph-to-DM image retrieval. The details of the timeline of capabilities required of DM to support the spectrograph, starting 8/2018, remain under analysis. | |
| LCR-687 | Alternate Standard Visit with 30s single exposure | FULLY IMPLEMENTED | LSE-29 (LSR), LSE-30 (OSS) | Requires that DM be able to handle two types of standard visits: two 15s exposures, or one 30s exposure. Somewhat vague on the question of how closely the two types of visits could be interleaved. | |
| LCR-586 | Update LSE-209 Software to OCS ICD | FULLY IMPLEMENTED | LSE-209 | A further round of technical updates to the OCS-to-subsystem device interface. The draft already serves as the basis for the prototype and early integration work that is ongoing. | |
| LCR-581 | Calibration Hardware Requirements Update | FULLY IMPLEMENTED | LSE-30 (OSS), LSE-60, LSE-140 (DM ICD) | ||
| LCR-458 | Support for "Deep Drilling" observing scenario | REJECTED | See LIT-325 - Getting issue details... STATUS for a task relating to unblocking this change request. Ultimately "Rejected" as no longer germane. |