[PIPE2D-1308] Generate flat-fields from drift flat observations Created: 03/Oct/23  Updated: 20/Jan/24

Status: Open
Project: DRP 2-D Pipeline
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Story Priority: Normal
Reporter: price Assignee: price
Resolution: Unresolved Votes: 0
Labels: EngRun
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Sprint: PreEngRun15Mar

 Description   

Scanning the slit in the spatial direction while integrating results in so-called "drift flats". We need to convert and coadd these to produce flat-fields we can apply during ISR.

 Comments   
Comment by yuki.moritani [ 07/Oct/23 ]

(Just for recording. The table will be copied to proper place, if necessary..)

n3 data were taken on 6 Oct 2023 using all-fiber lamp which illuminate ~half of slit. lamp (Thorlab OSL2IR) spectra were taken with the slit moving in the fiber axis. Because of limit of the stroke and velocity, it was impossible to take one "flat" image covering the illuminated region in a single shot, so two kinds of stroke were done having overlap. You could patch to make a flat field.

  visit datatype camera exptime [s] Note
9mtp 100669 dark n3 90  
  100670 driftFlats (-120 ->+60) b3,r3,n3 90  
  100671 dark n3 90  
  100672 driftFlats (+120 -> -60) b3,r3,n3 90  
  100673 dark n3 90  
  100674 driftFlats (-120 ->+60) b3,r3,n3 90  
  100675 dark n3 90  
  100676 driftFlats (+120 -> -60) b3,r3,n3 90  
  100677 dark n3 90  
           
12mtp 100660 driftFlats (-120 ->+60) b3,r3,n 90 dark was missing before it
  100661 dark n3 90  
  100662 driftFlats (+120 -> -60 b3,r3,n 90  
  100663 dark n3 90  
  100664 driftFlats (-120 ->+60) b3,r3,n3 90  
  100665 dark n3 90  
  100666 driftFlats (+120 -> -60) b3,r3,n3 90  
  100667 dark n3 90  

 

 

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