[DAMD-24] Add pfsSimObject module Created: 04/Oct/17  Updated: 13/Nov/19  Resolved: 04/Oct/17

Status: Open
Project: Data Model
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Task Priority: Normal
Reporter: cloomis Assignee: price
Resolution: Unresolved Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Relates
relates to INFRA-208 Create repo for simulated spectra, etc. Open
Story Points: 2
Sprint: 2DDRP-2019 H, 2DDRP-2019 I

 Description   

We need a pfsSimObject module. Proposed changes from existing datamodel.txt are currently only:

  1. Definitely add a LINETBL HDU, with at least lambda, amplitude, width, name columns.
  2. Possibly drop FLUX image, since the reference data are in the FLUXTBL HDU. But FLUX could be useful for quick identification or for some users. In any case, assert that FLUXTBL is definitive.

 Comments   
Comment by cloomis [ 30/Jun/18 ]

This has changed significantly, partly from discussions on the associated INFRA-208 and partly from what Sean Johnson has been doing. Please look at the current `datamodel.txt` and comment.

  1. Dropped FLUXTBL HDU, kept FLUX, added LAM.  Yes, FLUXTBL instead of (LAM, FLUX) appears to be a better match to `pfsObject` files, but we don't need any of the other FLUXTBL columns. So go for a simple structure.
  2. Dropped all the sky and observation info in both the file name and the content.

Questions:

  1. Do we want to require any additional header cards (Z, other properties, some name)?
  2. Do we want to apply any constraints on the resolution?
Comment by price [ 12/Sep/19 ]

I think the only thing to consider beyond what we have now is whether we want to add emission lines in a table. I suggest that we defer this until that becomes necessary.

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