Difference: FlatFieldForensics (1 vs. 6)

Revision 62017-07-05 - RogerSmith

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Timothee Greffe: Flat Field Forensics

tgreffe@caltech.edu
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Bizarre dips observed in variance curves for many e2v CCDs are explained by Tim for the first time. The Downing Dip and the Bilgi Bump each flag different subtle charge transport problems which could have severely impacted ZTF.
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  Date: Wednesday, July 5, 2017
Time: 12:30 pm PST
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Direct to Cahill 126: +1 626 395-8646
+1 626 395-8884
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Attending: COO crew, Alan Uomoto and Jorge fm Carnegie
Call-in: Greg Brethauer and co at STA
 

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  • Alan U. asks how it is that Bilgi Bump is restricted to a narrow wignal window without affecting lower fluxes. Roger: good question. We don't know.
  • Steve Kaye points out that a structural trap may empty when the clock is taken negative. Roger notes that charge could be pushed forwards (fm TG to serial register) or backwards. Coud the direction of travel be signal dependent?
  • Tim notes that we are looking into using an InGaAs camera to look at CCD electrodes through a microscope. One needs the near IR since Silicon becomes trasparent beyond 1 Ám.

 

Lyrics from Private Investigation by Dire Straights (1982)

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Revision 52017-07-03 - RogerSmith

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Timothee Greffe: Flat Field Forensics

tgreffe@caltech.edu
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 Treachery and treason, there's always an excuse for it
And when I find the reason I still can't get used to it
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Bizarre dips observed in variance curves for many e2v CCDs are explained by Tim for the first time. The Downing Dip and the Bilgi Bump each flag different subtle charge transport problems which could have severely impact ZTF.
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Bizarre dips observed in variance curves for many e2v CCDs are explained by Tim for the first time. The Downing Dip and the Bilgi Bump each flag different subtle charge transport problems which could have severely impacted ZTF.
 
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Date: Wednesday, July, 2017
Time: 12:30 pm
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Date: Wednesday, July 5, 2017
Time: 12:30 pm PST
 Location: Caltech, Cahill 126
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Communications: ....check here before the meeting for connection details

Zoom link to go here
Access code TBD
Phone TBD

Direct to Cahill 126: (626) 395-8646
Direct to Cahill 126: (626) 395-8884
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Communications:

Zoom https://zoom.us/j/6966624617
Meeting ID 696 662 4617
Phone to Zoom +1 646 558-8656
+1 408 638-0968
Direct to Cahill 126: +1 626 395-8646
+1 626 395-8884
 

Attending:
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Revision 42017-07-03 - RogerSmith

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Timothee Greffe: Flat Field Forensics

tgreffe@caltech.edu
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 Treachery and treason, there's always an excuse for it
And when I find the reason I still can't get used to it
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Bizarre dips observed in variance curves for many e2v CCDs are explained by Tim for the first time. The Downing Dip and the Bilgi Bump each flag different subtle charge transport problems which could have severely impact ZTF.
 
  • links to Power point and PDF will go here

Date: Wednesday, July, 2017

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Time: 12:30 pm
 Location: Caltech, Cahill 126
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Communications:

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Communications: ....check here before the meeting for connection details

 
Zoom link to go here
Access code TBD
Phone TBD

Revision 32017-07-01 - RogerSmith

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Timothee Greffe: Falt Feild Forensics

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Timothee Greffe: Flat Field Forensics

tgreffe@caltech.edu
 
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I go checking out the reports, digging up the dirt
You get to meet all sorts in this line of work
Treachery and treason, there's always an excuse for it
And when I find the reason I still can't get used to it
 
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NOTE: if you feel any aspect of a presentation is unclear please contact the author or rsmith@astro.caltech.edu since we will be happy to improve our documentation.
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  Date: Wednesday, July, 2017
Time: 12:30 pm
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-- RogerSmith - 29 Jun 2017
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Lyrics from Private Investigation by Dire Straights (1982)

Revision 22017-06-30 - RogerSmith

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Timothee Greffe: Falt Feild Forensics

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NOTE: if you feel any aspect of a presentation is unclear please contact the author or rsmith@astro.caltech.edu since we will be happy to improve our documentation.
  Date: Wednesday, July, 2017
Time: 12:30 pm
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-- RogerSmith - 29 Jun 2017

Revision 12017-06-29 - RogerSmith

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Timothee Greffe: Falt Feild Forensics

  • links to Power point and PDF will go here

Date: Wednesday, July, 2017
Time: 12:30 pm
Location: Caltech, Cahill 126

Communications:

Zoom link to go here
Access code TBD
Phone TBD

Direct to Cahill 126: (626) 395-8646
Direct to Cahill 126: (626) 395-8884

Attending:
Call-in:

Questions or comments:

  • (Click "edit" button above-right or below to edit this page.)

-- RogerSmith - 29 Jun 2017

 
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