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Release Notes

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Version 2020A.1.1.3 released on March 2, 2020 includes the following updates:

  • Change the protocol for GAIA catalog searches from http to https.

Note, the Mac disk image installer ot_2020A.1.1.4_macos.dmg includes the same software as version 1.1.3. This installer was made so that it could be mounted on all supported Macs (10.8+), the 1.1.3 installer would only mount on High Sierra (10.13) and newer. There is no need to install 1.1.4 if you already have 1.1.3.

Version 2020A.1.1.1 released on December 3, 2019 includes the following updates:

  • Add Position Editor options to display montaged 2MASS images centered at the base position.
  • Change the "Parallactic Override" to behave like "Fixed PA".
  • Move the GSAOI base position to the center of the Canopus patrol field.
  • Update the GeMS CWFS limiting magnitudes.
  • Display all viable GeMS PWFS1 guide stars.
  • Ensure that all observations have a scheduling date.


Version 2019B.1.2.1 released on October 7, 2019 includes the following updates:

  • Update GeMS guide star visualization and selection algorithm for NGS2.
  • Add the GAIA catalog for GeMS guide star selection (also available to other WFS via the Manual Guide Star selector).

Version 2019B.1.1.3 released on August 7, 2019 includes the following updates:

  • Fix an issue where the time between the slew and acquisition was sometimes not charged (effective August 1).
  • Fix approved target and conditions phase-2 checks for non-sidereal targets.

Version 2019B.1.1.1 released on June 3, 2019 includes the following updates:

  • Add GSAOI re-acquisition overheads.
  • Set GNIRS smart flats based on the observing wavelength instead of grating wavelength.
  • Add support for Zorro templates.
  • Fix error when creating a duplicate program.
  • Update Flamingos-2 MOS templates.
  • Update NIFS template notes about guiding on extended objects with Altair.
  • Update GMOS templates, adding notes about blue arcs.
  • ITC changes:
    • Show GSAOI estimated FWHM even with uniform surface brightness sources.
    • Add cool star model SEDs.
    • Add planet SEDs.
    • Add warning when read noise limited.


Version 2019A.1.1.6 released on April 4, 2019 includes the following updates:

  • Updated with new Chilean daylight savings time rules.

Version 2019A.1.1.5 released on March 28, 2019 includes the following updates:

  • Fix a time accounting issue with AcqCam, GPI, Phoenix, and TEXES observations.

Version 2019A.1.1.4 released on March 11, 2019 includes the following updates:

  • Fix a bug which prevented changing the target "type" that was left out of 1.1.3.

Version 2019A.1.1.3 released on March 6, 2019 includes the following updates:

  • Add the option to set the static component exposure time using the URL triggering API.
  • Fix a bug with saving the GPI Wollaston angle in the XML file.
  • Fix the time accounting rule for visitor instruments.
  • Fix a bug with OT ITC interface which double-counted coadds when calculating final S/N

Version 2019A.1.1.2 released on December 18, 2018 includes the following updates:

  • Fix a bug which prevented changing the target "type"

Version 2019A.1.1.1 released on December 12, 2018 includes the following updates:

  • It is possible to set the scheduling time for multiple observations.
  • If desired, it is possible to receive an email reminder when timing windows expire.
  • Email reminders are sent to contact scientists if a MOS mask is not checked within seven days.
  • All guide star options are now shown on the Position Editor.
  • Guide star symbols now only indicate guide quality.
  • GeMS guide star limiting magnitudes have been updated.
  • DD and SV programs are now included with the Queue program selection in the Open Program dialog.
  • Guide stars are no longer required (though still recommended) when triggering ToOs using the URL API.
  • The maximum size of the local database has been doubled to 100MB.
  • The URL for the 2MASS image server has been updated.
  • Updates to Phase 2 templates
  • Make ITC plot colors the same for all instruments


Version 2018B.1.1.1 released on May 31, 2018 includes the following updates:

  • Support selecting multiple programs in the open dialog
  • Add button to "Revert Changes" since the last sync
  • Support deleting multiple programs from the local database
  • Prevent manual ToO triggers in Inactive programs
  • Support non-sidereal "A/" asteroid names
  • Update GNIRS Templates for 2018B
  • ITC changes:
    • Remove unnecessary WFS selection
    • Add support for summing GMOS IFU elements
    • Fix exposure time for GMOS Nod-and-Shuffle observations in OT interface
    • Automatically set GSAOI Strehl in the ITC web form
    • Clean up the ITC web forms
    • Relabel obsolete components in the ITC web forms
    • Fix NIRI filters in which require unnecessarily wide input SED
    • Fix failures with power-law input SED
    • Fix failure when user-supplied SED range is too large


Version 2018A.1.1.1 released on November 28, 2017 includes the following updates:

  • Introduced additional user-defined target types: "Blind offset", "Off-axis", and "Tuning Star"
  • Added overheads for GMOS component changes
  • Queue programs numbered according to science band: band-1: 101-199, band-2: 201-299, etc.
  • Added new GMOS OIV and OIV continuum filters
  • Sunset/rise and nautical twilight times are shown in the elevation plot
  • Guiding can be easily disabled by deleting the Auto guide star or setting Auto Guide Search to Off.
  • Updated the texts of status observation status change emails
  • Observation template updates
  • Bug fixes
  • ITC changes:
    • Added support for GNIRS spectroscopy with Altair
    • Added support for GMOS IFU-2 observations with the Hamamatsu detectors
    • Updated mirror reflectivity data
    • Display GMOS peak counts as fraction of saturation limit
    • Fix bug with redshifted emission lines
    • Fix bug with GNIRS XD 111 l/mm grating


Version 2017B.1.1.1 released on June 6, 2017 includes the following updates:

  • Generalize support email labels to be consistent with current procedures
  • Improve the 'Show' search box in the Program Editor to search for text anywhere in the program (entering an integer will still search for that observation id)
  • Support import of timing windows from an ASCII file
  • GMOS-N defaults to the Hamamatsu CCDs
  • Update GMOS-N + Hamamatsu exposure time phase-2 checks
  • Support the new FLAMINGOS-2 K-blue and K-red filters
  • Expand email notifications when observations change status
  • Infrared "Night Baseline" calibrations changed to start with flats and end with arcs
  • Add GMOS central wavelength check to the ITC
  • Fix bug which prevented using all image servers with Visitor instruments
  • Correct the GNIRS configuration displayed in the e-obslog
  • Correct the F2 R3K central wavelength displayed in the FITS header
  • Update GMOS-N R150 grating ID


Version 2017A.1.1.5 released on March 28, 2017 includes the following updates:

  • Change the JPL Horizons interface to use the https protocol

Version 2017A.1.1.2 released on December 7, 2016 includes the following updates:

  • The OT will automatically download and cache images for all observations in opened programs
  • Time constraints are now visible in the OT elevation plot
  • A new Position Angle "Parallactic override" mode has been added for when observers need to override a parallactic angle calculation
  • It is again possible to manually create CWFS guide star asterisms for GeMS/GSAOI
  • ODGW guide stars will no longer be selected automatically
  • Selecting catalog stars marked in the Position Editor will now pass all information (name, coordinates, magnitudes) into the Target component for all target types
  • Moving an instrument iterator will not change it, the static component configuration will change to match the first instrument iterator
  • Ephemeris data is now compressed to save space
  • Other bug fixes
  • ITC changes:
    • A bug in calculating the peak signal for GMOS-S with the Hamamatsu detectors has been fixed
    • The NIFS gain and linearity limits have been updated


Version 2016B.2.1.1 released on July 26, 2016 includes the following updates:

  • Fix the PPMXL catalog proper motion units
  • Add a PA mode option to GSAOI to allow setting the PA to something other than the AGS-preferred value
  • Fix the default duration of the average parallactic angle calculation
  • Retain the AGS state when switching between open programs to avoid unnecessary AGS searches
  • Give an error for nonsidereal targets without a scheduling block
  • Ensure that AGS does not change the PA when in "fixed" mode
  • Check that the GMOS DTA-X offset is a multiple of the y-pixel binning
  • Keep the Position Editor guide star "+" buttons active at all times
  • Fix the ITC spectroscopy 1-pixel signal to correctly account for slit width
  • Make the Simbad target name resolution more robust
  • Add an icon for the Linux version of the OT
  • Add a link to the OT installation page in the version incompatibility warning

Version 2016B.1.1.3 released on June 15, 2016 includes the following updates:

  • Fix the "Remote" checkbox in the Open dialog so that it works as expected for CAL and ENG programs
  • Fix non-sidereal target duplication to have identical ephemeris elements, preventing a false Phase 2 check warning
  • Change AGS searches to allow results from completed searches to display while other searches are still ongoing
  • Add a menu option for clearing ephemeris data from non-sidereal targets to reduce the size of the program

Version 2016B.1.1.2 was released on June 3, 2016 with the following updates:

  • Find all guide stars automatically
  • Add support for ephemerides
  • Automatically download ephemerides from JPL/HORIZONS
  • Migrate old orbital elements to single-element ephemerides
  • Sign OSX installers
  • Add support for new Altair 589nm notch dichroic
  • Change default proprietary period to 12 months
  • Update Flamingos-2 Templates
  • Allow GMOS-N + Altair + OIWFS guide star combinations
  • Visualize nonsidereal motion in the Position Editor
  • Add GPI example library
  • Update GSAOI guided offset overhead
  • Fix the display of F2 long slits
  • Update GeMS phase-2 checks to ignore daytime calibrations
  • Ignore negative parallaxes from Simbad
  • Improve feedback when the image catalog server returns an error
  • Fix OT error displaying a Base-Target distance of zero
  • Fix Position Editor color map and intensity options
  • Fix target name check
  • Fix error when closing the OT with multiple windows open
  • ITC changes:
    • The "Signal" graph is now for 1-pixel
    • Display spectroscopy peak counts in ADU, electrons, and % full-well
    • Give nonlinearity and saturation warnings for spectroscopy
    • Add support for GNIRS imaging
    • Support binning in the GMOS IFU-2 pixel-space graph
    • Give a warning when the GMOS IFU uses 4x spectral binning
    • Increase NIRI + Altair maximum guide star distance to 45"
    • Add Y-band to the brightness normalization options
    • Add IFU details to GMOS ITC web interface
    • Add links to the GMOS IFU-2 pixel-space graph data
    • Fix F2 optimal aperture with uniform surface brightness spectroscopy
    • Fix ITC K0III star SED
    • Discourage spatial binning with the GMOS IFU


Version 2016A.1.1.2 was released on December 2, 2015 with the following updates:

  • New sync algorithm transfers only nodes that differ
  • Support the new Gemini Observatory Archive (GOA)
  • New Catalog Query Tool which supports VOTables
  • AGS consideration of science field vignetting when selecting the F2 OIWFS guide star
  • Update Simbad name resolvers
  • Add source redshift parameter in target component
  • Indicate guide star "Quality" in the Position Editor
  • Add a "Cancel" button to the OT Browser search
  • Remove Pluto from the list of Solar System "Planets"
  • Enable the second Altair dichroic and update labels
  • Give an error when GMOS-S observations use the E2V CCDs
  • Add a phase-2 check for the GNIRS Decker
  • Remove the GMOS N&S slit Phase-2 warning when Custom Mask selected
  • Add F2 Custom Mask "Slit Width"
  • Update the list of Phoenix filters
  • Update GMOS-S gain & read noise
  • Activate AGS for Phoenix
  • Update the GMOS-S Hamamatsu CCDs DTA-X offset pixel scale
  • Fix errors in GPI unblocked modes
  • Update GeMS guide star limiting magnitudes
  • Update F2 gain, RN, linearity limit, and well depth
  • Obsolete the NIRI filters Jcont(1.065) and Jcont(1.122)
  • ITC changes:
    • Add support for GNIRS
    • Add support for NIFS
    • Support for GMOS IFU-2
    • Support different emission line flux units
    • Set the default number of GMOS IFU sky fibers
    • Support for user-defined SEDs
    • Support u' and Y filters as brightness normalizations
    • Show peak counts in ADU and full-well fraction
    • Support the F2 R3K grism
    • Support all IFU analysis methods
    • Remove unused sky aperture from IR instruments
    • Update Flamingos2 ITC filter transmission data


Version 2015B.1.1.1 was released on June 3, 2015 with the following updates:

  • Update to Java 8
  • Add support for local UCAC4 catalog servers
  • Consider vignetting of the science field when selecting the GMOS OIWFS guide star
  • Add morphology and SED parameters to the Target component
  • Add an interface to the ITC (Flamingos2, GMOS, GSAOI, NIRI)
  • Precess B1950 coordinates to J2000
  • Parse pre-2010B target brightness strings
  • Reorganize the target component
  • Add a scroll bar to the target table
  • Remove obsolete catalog and image servers
  • Add support for Flamingos2 K-long filter
  • Update NIFS phase-2 templates
  • Update GRACES phase-2 templates
  • Update GPI phase-2 templates
  • Only give warning about missing Altair Field Lens for off-axis targets
  • Improve precision of timing window periods from 1m to 1s
  • Fix bug requiring two clicks to close the timing window editor
  • Fix GMOS-S + Hamamatsu exposure time phase-2 check
  • Change GPI Halfwave plate configuration overhead from 30s to 5s
  • Change Visitor instrument setup time from 20m to 10m
  • Allow structured magnitude information in URL triggers


Version 2015A.1.1.2 was released on February 11, 2015 with the following updates:

  • Fix target name resolver
  • Fix error for missing ODGW star
  • Fix "User" target number mismatch
  • Fix missing guide star error for Visitor observations

Version 2015A.1.1.1 was released on December 10, 2014 with the following updates:

  • Template Reapply must not overwrite Custom Mask MDF names
  • Fix nonsidereal Solar System Object Horizons name resolution
  • GNIRS minimum exposure time phase-2 check must apply to all observation classes
  • Add phase-2 check for GMOS IFU spatial binning
  • Support e-offsetting in GMOS templates
  • Add guide star magnitude phase-2 checks
  • Give warnings when slower guiding will be required
  • Re-upload of auxiliary files must reset NGO check flag
  • Add "Remote" selection option to Open dialog and Browser
  • Save Position Editor preferences
  • Open dialog should only show programs editable with the active key
  • Update to Java 7
  • Add a phase-2 check for P-offsets in slit spectroscopy
  • Reinstate GPI UNBLOCKED modes
  • Update F2 exposure time phase-2 check to work with all classes
  • Updates for fast-turnaround programs
  • Add average parallactic angle support for GNIRS
  • Add average parallactic angle support for F2
  • Allow copy & paste of template groups
  • Fix GMOS-N Nod & Shuffle phase-2 check
  • Fix missing GNIRS minimum exposure time
  • Update the OT program name on Windows and MacOS
  • Add support for new GMOS-N R150 grating
  • Add support for Korea
  • Update GMOS-S Hamamatsu readout overheads
  • Change the MASCOT AGS default to Strasbourg
  • Change OT color scheme to improve readability
  • Update GPI Templates for 2015A
  • Update GMOS Templates for 2015A


Version 2014B.1.1.2 was released on June 16, 2014 with the following updates:

  • Fix template reapplication
  • Fix regeneration of MOS + pre-imaging templates
  • Fix GMOS exposure time validity check

Version 2014B.1.1.1 was released on June 4, 2014 with the following updates:

  • Add support for observing at the average parallactic angle
  • Add "Sync All" feature to the "File" menu and "Confirm Close" dialog
  • Add support for "Large" programs (LP)
  • Make the "Open Program" dialog columns sortable
  • Give every observation an "Observing Log" component to facilitate log auto-updates
  • Include a "DHS Write" overhead for all instruments
  • Replace pre-2012B Phase-I node with PDF proposal attachments
  • GMOS-S observations now default to the Hamamatsu CCDs
  • Add new Z and Y filters to GMOS-S
  • Check that MOS mask names are defined and have the correct format
  • Update GMOS custom ROI readout overheads
  • Transform GMOS nod & shuffle offsets between CCD manufacturers
  • Check for invalid fractional or zero-length GMOS exposure times
  • Default the Altair beamsplitter (and reset all old observations) to 850nm
  • Check that all Altair guided offsets are reachable
  • Check that offsets with LGS are all less than 5 arcminutes
  • Fix Linux and Windows keyboard shortcuts for reordering observations
  • Fix bug when editing the exposure time in FLAMINGOS-2 Sequence iterators
  • Fix the broken Partner search in the OT Browser


Version 2014A.1.2.10 was released on March 5, 2014 with the following updates:

  • Performance improvements, especially with large programs and using multiple science program editors 
  • Fixes a bug with saving OT browser queries

Version 2014A.1.2.5 was released on January 27, 2014. Changes from the previous version include:

  • Fix several memory leaks, this improves performance and reliability when working with large program.

Version 2014A.1.2.1 was released on December 9, 2013. This is a major update with many significant changes, including:

  • The use of passwords to access programs has been simplified by the use of authentication keys. These are requested once per OT and then they are saved until reset or the OT is upgraded. Old program passwords are still valid. There is a new type of user key based on email addresses that gives access to all programs that include a given address.
  • Fetch/Store has been replaced with a more robust sync mechanism. The old fetch/store and open program dialogs have been merged. Any conflicts resulting from simultaneous edits of program nodes can be resolved manually, recent work should not longer disappear if there is an edit conflict.
  • Program navigation has been changed and improved. Prev and Next buttons move to the previous and next programs in the list of programs loaded into the current Science Program editor. The Back and Forward buttons follow the navigation history of the visible program. 
  • The Observation Status (Phase 2, For Review, etc) has been split into a Phase 2 Status (Phase 2 to Prepared, and Inactive) and Exec Status (Ready to Observed).
  • The GN and GS report servers have been split. Therefore, the links to the queue, director's time, and poor-weather summary pages have been split.
  • Inactive observations are no longer included in the calculations of the planned time.
  • The GMOS-S guide star limiting magnitudes have been updated to reflect the measured performance. The limits are about 1 magnitude brighter than previously.
  • The prediction of the Strehl value for Canopus guide star configurations have been updated based on measured performance.
  • Canopus Strehl results now include the expectded FWHM based on measured performance for the conditions selected.
  • The default Canopus beamsplitter is now 0.85 um.
  • Template observations have been updated for GMOS-N/S, FLAMINGOS-2, GSAOI, and GNIRS.


Version 2013B.1.2.2 was released on September 13, 2013. Changes from the previous version include:

  • The FLAMINGOS-2 longslit acquisition overhead has been reduced to 20 minutes.
  • Internal changes so that the queue band can be put in the image headers.

Version 2013B.1.1.1 was released on June 5, 2013. Changes from the previous version include:

  • Add support for visitor instruments
  • Update OT splash screen for 2013B
  • Change phase-2 check warning for unapproved targets to an error
  • Add Flamingos 2 to the SmartGCAL system
  • Implement Template libraries and mapping for Flamingos 2
  • Add new Flamingos 2 Lyot wheel positions
  • Change "Notify PI" checkbox to default to TRUE
  • Update GNIRS Templates
  • Add Hamamatsu CCD option to GMOS-S
  • Fix OT bug to save dirty programs in OSX when clicking CMD+Q
  • Handle JDK 1.6 update 045 which breaks RMI
  • Update TEXES component
  • Add GPI "Extended Source" Parameter
  • Add GPI Static "Observing Modes" Parameter
  • Add "Lyot" Parameter to GPI Engineering component
  • Add GPI warning if target magnitude is I < 0
  • Add GPI maximum integration time check
  • Add GPI warning if Filter, Apodizer, FPM or Lyot are overridden
  • Add GPI check for half wave plate angle iterator + Wollaston


Version 2013A.2.1.1 was released on March 6, 2013. Changes from the previous version include:

  • The ability to open PDF and finding chart attachments directly from the OT.
  • Canopus CWFS patrol field updates.
  • GSAOI overhead updates.
  • Added the Lya395_G0342 filter to GMOS-S.
  • Fixed a bug in the non-sidereal calendar GUI that especially affected Australian timezones.
  • Explicitly set the XML character encoding in order to preserve Unicode characters.

Version 2013A.1.1.1 was released on December 6, 2012. Changes from the previous version include:

  • On hold ToO observations change to phase 2 when copied to another ToO program
  • Add semester menu and program type check-boxes to OT Fetch dialog for NGOs and staff
  • Fix NIRI J continuum 1.22um filter in OT skeletons
  • Prevent erasure of file attachments by store of other users
  • Separate SmartGCAL tables for test and release versions
  • Fix the OT 'Help' launcher in Ubuntu Linux
  • Update blueprint mapping/libraries for 2013A
  • Prevent deletion of template groups which have targets
  • Fix highlighting the active program in the Fetch/Store program list
  • Display the effective NIFS OIWFS field of view corrected for offsets
  • Add PA +/- 180 deg option to the F2 component
  • Prevent deletion of all OT Observing Logs
  • Apply GPI intensity parameter to IR/Visible and WhiteLight and update name
  • Allow multiple GPI artificial calibrations sources on at the same time
  • Update the 2013A OT splash screen
  • Fix internal ODB program ID parser bugs when loading from XML


Version 2012B.3.1.1 was released on August 31, 2012. Changes from the previous version include:

  • User catalogs may now be used for GeMS/GSAOI guide star asterism selections
  • Limiting magnitudes for manual guide star searches are adjusted for the conditions constraints just as for the automatic guide star selections
  • Template observations for GeMS/GSAOI can be created from 2013A proposal files.
  • The GNIRS H filter can be used for red camera acquisitions
  • Improved Phase 2 checks
  • Horizons non-sidereal name lookups are done every time that the coordinates are updated in order to ensure that the latest orbital elements are used
  • Added Gemini North and South DSS image server
  • Gemini staff may set an override on Phase 2 check warnings
  • Fixed a bug that prevented groups from being deleted
  • Fixed a bug that prevented automatically generated GCAL settings from displaying if the computer language was not English
  • Fixed bugs in the template observations logic and libraries. Current templates or observations are not changed but regenerated templates will be correct.

The 2012B OT was released on June 18, 2012. Changes from the previous version include:

  • Inclusion of new observation templates
    • Templates are filled in with the instrument resources selected in the Phase I proposal
    • Targets and conditions associated with a group of templates are viewed by clicking on the template group name
    • Acquisition and baseline calibration observation examples are included
    • Templates are 'Applied' to targets and conditions to create draft observations for execution
    • Template "groups" can be split so that different templates can be applied to different targets
    • Changes to templates can be "Reapplied" to existing observations as a way to easily make changes to many observations at once
    • Templates can be regenerated from the template server to get the latest templates or start from scratch
  • Automatic guide star selection for all instruments and wavefront sensors
    • "Auto GS" buttons will select a guide star for the default wavefront sensor
    • It is possible to select an alternative wavefront sensor using menus in the target component or Position Editor
    • Magnitude limits for the selection depend on the conditions constraints
  • Simplified guiding state options in offset iterators. Control of individual wavefront sensors is still available via the Advanced Guiding Options tab.
  • Support for the new LGS+PWFS1 mode in the Altair component
  • Custom ROI support for GMOS-N and GMOS-S
  • Added GNIRS YJK imaging filters to the GNIRS sequence iterator
  • Target brightness information stored as value:bandpass:system where sytem is Vega mag, AB mag, or Jy
  • Reduced memory usage and more rapid program launch
  • Updated Phase 2 checks
  • Relabel conditions bins to match the 2012B PIT
  • Fixed GNIRS OT visualization with Altair
  • Updated GNIRS acquisition times


Version 2012A.1.2.1 was released on February 15, 2012. Changes from the previous version include:

  • Fix Smart Calibration updates
  • Combine internal/external Fetch/Store options
  • Update the Canopus bottom-port orientation
  • Update the F2 OIWFS patrol field
  • Change GSAOI base position from detector 3 to detector 4
  • Update the CWFS patrol field limits
  • Add Fetch & Store password persistence
  • Fix F2 OIWFS arm orientation when zooming
  • Set the GeMS ADC default to 'Off'
  • Fix storing of Browser queries
  • Add the option to download 2MASS images in any band
  • Display the image source and band in the Position Editor
  • Show airmass and hour-angle constraints on the elevation plot
  • Add a phase-2 check for GMOS-N 3-amp mode
  • Scale Mascot Strehl results

Version 2012A.1.1.2 was release on December 15, 2011. Changes from the previous version are:

  • Flats now taken before arcs in the Nighttime/Daytime Baseline GCAL observe components to help minimize persistence in the GNIRS

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