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Last modified on 24 January 2020, at 13:39

24 Jan. 2019

Revision as of 13:39, 24 January 2020 by Nerasmus (Talk | contribs) (Created page with "Minutes Lesedi-SPRAT 24/01/2019: *1. Iain has emailed pdf showing optical design and performance. We will go through it and give final go ahead *2. Iain has gotten prices for...")

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Minutes Lesedi-SPRAT 24/01/2019:

  • 1. Iain has emailed pdf showing optical design and performance. We will go through it and give final go ahead
  • 2. Iain has gotten prices for Andor and options will send an email with the options
  • 3. Kathryn/James showed LJMU CAD design with our slide design incorporated and gave overview
  • 4. Iain conforms 300um repeatability is acceptable for spectrograph brand filter, no effect on spectra, only flat fielding of imaging is sensitive to position repeatability
  • 5. Iain conformed 30x30mm filter clear aperture of current design is perfect. No vignetting expected
  • 6. Iain conformed n SPRAT LT spectrograph, the spectograph filter is fixed component (doesn’t move in and out of beam)
  • 7. Steward confirm no clash with our HRS/guider pickoff and their calibration pickoff (ours outside SPRAT flange, theirs inside)
  • 8. We will send current slide design for them to see form factor, we will finalise design in next 4 weeks.
  • 9. Carel indicated we want API with thrift layer. LJMU agreed that makes sense. Carel and Chris will communicate and clarify software issues.
  • 10. LJMU will supply computer and software.
  • 11. We need to double check that new Andor camera can be triggered with GPS like older SHOC models. Iain says they have input for tigger. Spec sheets also stated external trigger possible.
  • 12. UJMU says the actuators have mounting pieces .Will we use them? They look pretty flimsy apparently.

Action items:

  • Carel will start some document for software functionality and touch base with Chris to move things forward.
  • Nic/Hannah/Hitesh need to go through Iains optical design pdf and give go-ahead with design.
  • LJMU will send list of peripheral components: where, what, cables etc. Kathryn wills send current cable wrap design.
  • Kathryn will send slide design incorporated into their CAD, Kathryn will finalise design in next 4 weeks.
  • Nic will check 300 (600, 900) um shift of dust spec effect on flat field using Iain Zemax file to verify 300um position repeatability of filter actuators is