[SURVEY-4] Input Spectrum sampling and extension Created: 21/Jan/17  Updated: 03/Jun/20  Resolved: 03/Jun/20

Status: Done
Project: Survey operation on planning and tracking
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Story Priority: Major
Reporter: vlebrun Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified


 Description   

I need some precision on the input spectrum format, as I am creating some stars simulations from external sources :

  • the sampling is finer than PFS one (0.01A)
  • the wavelength coverage is not total (3400-10000 A)

I tested the ETC on one of those spectra and it worked well, but the output spectrum covers the whole PFS lambda range (up to 12000 A), hence I wanted to understand if the sampling is a big issue, and how is obtained the flux above 10000A
I tried to attach the input spectrum I used, but the server answered with an error
thanks
Vincent



 Comments   
Comment by Kiyoto Yabe [ 23/Jan/17 ]
  • data in the FLUX extension of pfsObject file is resampled with 0.1 nm sampling because the sampling is different in each spectrograph arm. The sampling of 0.1 nm is not based on any agreement I think. So, the sampling may be a big issue in some specific cases. Do you have any requirement from 1D DRP side?
  • Above 10000A, the data is extrapolated by using the value at the longest wavelength (10000A in this case).

Kiyoto

Comment by vlebrun [ 24/Jan/17 ]

OK I get it for the extension, we will produce extended data to get a correct input.
As for resolution, my point is that we are ingesting spectra at high resolution and I wanted to know if there is a problem. But if there is a resampling it should not be a big deal?
Vincent
P.S. I am still unable to upload a file onto the server, whom should I refer to?

Comment by Kiyoto Yabe [ 24/Jan/17 ]

Technically, I think there should be no problem even if you use high resolution template. For uploading error, could you send me the error message, please?

Kiyoto

Comment by vlebrun [ 24/Jan/17 ]

The message is :

File "A0p_hd66698_m20.dat.zip" was not uploaded
An internal error has occurred. Please contact your administrator.

I like so much this helpful messages

Vincent

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