[INSTRM-562] Full reference data set Created: 13/Oct/17  Updated: 25/Feb/22  Resolved: 13/Oct/17

Status: Open
Project: Instrument control development
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: cloomis Assignee: arnaud.lefur
Resolution: Unresolved Votes: 0
Labels: SM1, SPS
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified


 Description   

To recap various formal and non-formal conversations, here is the data set we would like taken after each instrument reconfiguration, cool down, or disassembly. And once a month in any case.

In order:

  • 15 biases
  • 15 300s darks
  • dithered flats, currently 20 roughly 0.3 pixel steps on each side of nominal. Three exposures at each position.
  • 5 flats at nominal position.
  • 5 Ne arcs, with peaks at 40k or so
  • 5 HgAr arcs peaks at 40k or so
  • any other arc lamps, 5 exposures with peaks at 40k

 Comments   
Comment by rhl [ 14/Nov/17 ]

I was just chatting with Jim-sensei.

I think we'd also like a set of in-focus images with the slit dithered by 1/2 a pixel in each direction (i.e. an extra 3 exposures with offsets (0.5, 0.0), (0.5, 0.5), (0.0, 0.5) in addition to the one at (0.0, 0.0)).

The sampling is actually a bit worse than a factor of 2, but we don't think we need to routinely take data with 3x3 dithers. We may also ask for occasional dithers of out-of-focus data, but that needn't be added to the reference data set either.

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