'''Data Pipeline:''' Marco Lam (LJMU; C.Y.Lam@ljmu.ac.uk)
'''Project Scientist for LT:''' Robert Smith '''Local Co-PIs:''' Amanda Sickafoose Nicolas Erasmus (amandanerasmus@saao.ac.za) & Hannah Worters (hannah@saao.ac.za)
'''Local Electronics Engineer:''' Hitesh Gajjar (hitesh@saao.ac.za)
'''Local Mechanical EngineesrEngineers:'''James O'Connor (joc@saao.ac.za) and , Egan Loubser (egan@saao.ac.za), and Kathryn Rosie (krosie@saao.ac.za)
'''Local Software Engineer:''' Carel van Gend (carel@saao.ac.za)
== Documentation ==
* The link to the 2017 October 27 Skype kick-off presentation: https://www.dropbox.com/s/lcr54nkvtusdh69/SAAO-SPRAT-KICKOFF.pptx?dl=0 (includes references to the SPIE paper and Zej's thesis)
* [[Media:Mookodi_System_Description_0.4.pdf|Mookodi System Description v0.4]] -- This document is to provide a system description of Mookodi, its sub-assemblies, locations of adjustments and the reasons behind some of the decisions. It does not cover control software, nor procedures for setting up or testing the instrument.
<!-- *[[Media:Mookodi_Filter_Change_Instruct_0.2|Mookodi Filter Change Instructions v0.2]] -- This document describes the procedure to fit/replace filters in the filter assembly. -->
== Notes from meetings ==
[[ 18 Nov. 2019]]
[[ 01 Feb 2019]]
[[ 27 Oct. 2018]]
[[ 24 Jan. 2019]]
[[ 31 Jan. 2019 Telecon with Iain, plus email communication]]
[[ 12 Feb. 2020 Filter requirement meeting (Nic, Hannah, Retha, James, (Kathryn))]]
[[6 Mar. 2020]]
[[20 Mar. 2020]]
[[3 Apr 2020]]
[[19 June 2020]]
[[3 July 2020]]
[[17 July 2020]]
[[6 Nov 2020]]
== SHOC/SPRAT hybrid ==
== Spreadsheet of pros/cons for proposed mounting options ==
[[File:LesediSpec.Mounting1.jpg||1000 px|center]]
== Project Schedule ==
Proposed: start 01 Jan 2019, delivery 04 May 2020. See timeline in bid. Note that paperwork was not signed until 01 March 2019, so there is an anticipated delay.
[[File:Screen Shot 2019-11-18 at 11.48.27.jpg||500px|center]]
== Lens Coatings and Andor CCD ==
17 July 2020: [[:File:Mookodi_iKon_test.pdf|Mookodi Andor camera test datasheet]]
17 January 2020: Decision was made to go with Andor Ixon 888 UVB and -AB AR coating for lenses. Decision swayed by the off-the-shelf Nikon lens which will be the limiting element for obtaining spectra/photometry below 400nm. -A coating not good > 750nm where other elements still perform well.
[[File:Lens_coatings_update.png||500px|center]]
== Preliminary Exposure Time Calculator ==
[https://livtel.github.io/saao_sprat_etc/ Calculator]
== Imaging Photometry Filters ==
Link below to the SDSS filters for Mookodi's imager:
* [[ Filter Plots and Data]]
== Camera ==
Link below to the Andor CCD spec sheet and manufacturer's performance sheet:
* [[Media:Andor iKon-M 934 Specifications.pdf]]
* [[File:Mookodi iKon test.pdf]]
== Interfaces ==
27 January 2020: Diagram showing overview of system interfaces.
[[File:LJMU_interfaces.png||1250px|center]]
== Software ==
[https://docs.google.com/document/d/1Z9aPGZ-iYJSIZjTwoWAixtsYDBt-WyQUKkqTMmgFrSc/edit Use case 1 - Sidereal Spectroscopy]
The software runs on an instrument PC, which hosts the camera driver software and connects to an Arduino for the moving parts. Additionally a filter mechanism may be controlled from here.
We envisage providing Thrift interfaces to the camera driver, the Arduino driver and the filterwheel driver. These all run as standalone server processes, and are accessed by an instrument controller process, which has clients for each of the server processes. The instrument controller contains logic to coordinate the instrument operations, and also is able to send commands to and receive state from the telescope.
The following diagram illustrates the software layout:
[[File:SpratBlocks.svg|1250px]]
=== Software Interfaces ===
==== Detector ====
==== Moving parts ====
=== Data Files ===
The camera driver software retrieves the observation data from the camera, converted this to FITS format and saves this to disk.
The FITS files are named according to the SAAO file naming convention:
==== FITS header fields ====
The FITS headers include the keywords: