Changes
/* Change Log */
* '''20-25 January 2017:''' Engineering run during which the cryostat was re-aligned to the rest of the instrument in an attempt to remove what was thought to be coma in the images. Eventually concluded that the faint tails extending redward of arc lines are an optical ghost - a series of reflections thought to arise as light bounces between the CCD and the field-flattener lens that forms the cryostat window. There is no simple fix for this so the effect will just have to be quantified.
* '''21 December 2016:''' Initial documentation for Quick-Look GUI added: https://topswiki.saao.ac.za/index.php/Quick_Look_Tool
* '''6-13 December 2016:''' Another intensive week of software refinement! Highlights include the introduction of: ''Synergy'' [[https://topswiki.saao.ac.za/index.php/74%22_/_1.9m#Computer_setup_.28keyboard_and_mouse_sharing.29]] (which allows a single keyboard and mouse to operate across the the two SpUpNIC monitors and that of the TCS), the ability to send target coordinates from the SpUpNIC target catalogue file to the TCS (both for pointing and for downloading finder charts), a new exposure tab for automatically running sequences of exposures (e.g. arc-object-arc procedures), a more streamlined Hartmann routine, as well as the general tidying up of various minor software issues. Also the start of comprehensive documentation of the SpUpNIC Control and Quick-Look GUIs.
* '''9 November 2016:''' Installed a new grating lock that restores full software control of the grating mechanism, while maintaining stability of the grating angle. The user can now change gratings and optimise the wavelength range by changing the grating angle via the SpUpNIC Control GUI (without having to call for technical support).
* '''5 August 2016:''' The cryostat lost vacuum and warmed up. We're not sure what caused this, but suspect that the cryostat valve had not been closed tightly enough and so the vacuum gradually degraded. Leak-testing revealed nothing so we pumped the cryostat over night and the observers were back on-sky a night later.
