Timeline ======== Here we document the timeline of changes to SEDM. .. table:: Table 1. SEDM Hardware Timeline +------------+------------+------------+-----------------------------------------------------------------------------------------+ | Date (UT) | IFU CCD | RC CCD | Description | +============+============+============+=========================================================================================+ | 2023/04/07 | 26265 | 04001312 | IFU Pixis CCD camera replaced with Andor CCD and pylos replaced with linux computer | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2023/02/07 | 05313416 | 04001312 | P60 weather station replaced and operating again | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2022/10/17 | 05313416 | 04001312 | P60 weather station struck by lightning | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2022/07/01 | 05313416 | 04001312 | pharos retired and all processing done on minar going forward | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2022/06/16 | 05313416 | 04001312 | Primary mirror removed, resurfaced, and replaced | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2021/08/06 | 05313416 | 04001312 | Adjusted P60 secondary defining points to alleviate vacuum system problem | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2021/08/03 | 05313416 | 04001312 | Repaired Dry Air system online again | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2021/07/17 | 05313416 | 04001312 | P60 secondary issues return | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2021/06/23 | 05313416 | 04001312 | Dry Air system failure | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/29 | 05313416 | 04001312 | Re-installed repaired Dry Air system and discovered there is no flow control | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/09 | 05313416 | 04001312 | RC AtoD threshold adjusted so low-background values do not get set to zero | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/06 | 05313416 | 04001312 | RC serial number fixed, now correct | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/05 | 05313416 | 04001312 | Adjusted RC alignment and updated RC-IFU offset in pipeline (RC serial still wrong) | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/03 | 05313416 | 04001312 | Returned to operations with :ref:`original RC CCD ` in RC spot, however serial | | | | | number still shows old IFU CCD number 2803120001 and AtoD threshold too high | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/10/01 | 05313416 | 2803120001 | Telescope down for two nights to repair secondary vacuum system and replace RC camera | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/08/28 | 05313416 | 2803120001 | Kept :ref:`original IFU CCD ` in RC spot, after finding condensation on outside | | | | | of RC window, disabled dry air system | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/07/15 | 05313416 | 2803120001 | Instrument control computer mounted on telescope | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2020/07/10 | 05313416 | 2803120001 | Put :ref:`original IFU CCD ` in RC spot due to loose USB port, using spare fibre | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/09/18 | 05313416 | 04001312 | P60 secondary axial supports adjusted even closer to retaining ring | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/09/16 | 05313416 | 04001312 | P60 primary washed (+12% refl.), RA coupling replaced | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/09/13 | 05313416 | 04001312 | P60 secondary axial supports moved to retaining ring to minimize vacuum involvement | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/09/06 | 05313416 | 04001312 | P60 secondary re-installed after friction reduction on radial defining points | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/09/02 | 05313416 | 04001312 | P60 secondary removed for vacuum system overhaul and testing | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/08/11 | 05313416 | 04001312 | S/N measurement star observations taken (focus was good) | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/06/12 | 05313416 | 04001312 | First evidence of P60 focus problems | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/05/20 | 05313416 | 04001312 | Re-set IFU camera and CCD optics stage: achieved good focus @ 0.4 mm | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/05/15 | 05313416 | 04001312 | Laser verification of optical alignment, re-centered IFU CCD | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/05/14 | 05313416 | 04001312 | :ref:`New PI CCD ` re-installed in IFU position | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/04/23 | 2803120001 | 04001312 | Replaced fold mirror with Acton coated fold, moved expander lens, cleaned MLA, | | | | | Original IFU CCD installed while New PI CCD sent in for board upgrade | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/04/18 | 05313416 | 04001312 | Replaced pickoff mirror with Acton coated pickoff, trimmed RC standoffs | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/02/08 | 05313416 | 04001312 | Installed instrument with upgraded enclosure, new pickoff/fold mirrors, original optics | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | UPGRADE #2: Re-did interface plate, enclosure, cable management, new pickoff/fold mirrors, kept original optics. | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2019/01/05 | 05313416 | 2803120001 | Removed instrument for upgrade #2 | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/09/27 | 05313416 | 2803120001 | Put :ref:`original IFU CCD ` in RC spot | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/08/15 | 05313416 | 04001312 | S/N measurement star observations taken | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/08/13 | 05313416 | 04001312 | Last use of kpy pipeline | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/07/08 | 05313416 | 04001312 | Start of pysedm pipeline | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/06/30 | 05313416 | 04001312 | Last A/B exposures taken | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/06/19 | 05313416 | 04001312 | Installed :ref:`Jenoptik MLA ` PN: 107578 520 micron pitch | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/05/08 | 05313416 | 04001312 | New PI CCD in IFU spot with corrected SER_NO | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2018/01/11 | 2803120001 | 04001312 | Original RC CCD, New PI CCD sent for repair | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2017/09/09 | 2803120001 | 08646C7F- | Installed instrument with upgraded enclosure, original optics | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | UPGRADE #1: Kept mountings and interface plate, re-did enclosure to put electronics outside optics cavity, re-did RC mounting. | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2017/02/28 | 2803120001 | 08646C7F- | Removed instrument for upgrade #1 | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2016/07/07 | 2803120001 | 08646C7F- | :ref:`New PI CCD ` in RC spot with incorrect SER_NO (should be 05313416) | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2016/06/02 | 2803120001 | 04001312 | Original RC CCD (now repaired) | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2016/04/25 | 2803120001 | 08098513 | :ref:`Original IFU CCD ` (now repaired) | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2016/03/26 | none | 08098513 | Moved loaner IFU CCD to RC | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2016/02/29 | 08098513 | 04001312 | Loaner CCD from PI for IFU | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2015/11/15 | 2803120001 | 04001312 | Earliest data set in /scr2/sedm/raw on pharos | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2014/01/31 | 2803120001 | 04001312 | Earliest definitive appearance of 'stripes' in :ref:`original IFU CCD ` data | +------------+------------+------------+-----------------------------------------------------------------------------------------+ | 2013/03/12 | 2803120001 | 04001312 | Earliest data set in /scr2/npk/raw on pharos | +------------+------------+------------+-----------------------------------------------------------------------------------------+ Table 1 shows the dates when major changes to the instrument hardware were made. This table does not capture adjustments of optics or minor hardware changes. Column 1 is the date the change was made, column 2 is the IFU CCD serial number, column 3 is the RC CCD serial number, and column 4 describes the hardware change. Last updated on |version|