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CCB-329 - Broaden Definition of Attribute aperture #403

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jshughes opened this issue Sep 2, 2021 · 1 comment · Fixed by #405
Closed

CCB-329 - Broaden Definition of Attribute aperture #403

jshughes opened this issue Sep 2, 2021 · 1 comment · Fixed by #405
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B12.0 needs:triage p.must-have pending-scr Approved SCR queued for implementation requirement

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jshughes commented Sep 2, 2021

https://pds-jira.jpl.nasa.gov/browse/CCB-329

CCB-329 - The aperture attribute is defined for optical instruments with circular light collecting openings. Telescopes at radio wavelengths are not necessarily circular and may be arrays. Broadening the definition will make the attribute more useful at all wavelengths.

Change definition of aperture to: "The aperture attribute provides a measure of the effective collecting area of the telescope -- its diameter (if single and circular) or its equivalent diameter (if non-circular and/or an array)."

For purposes of this definition, aperture efficiency is assumed to be 100 percent.
@jshughes jshughes added requirement pending-scr Approved SCR queued for implementation p.must-have needs:triage labels Sep 2, 2021
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@jshughes is this planned for this build? or is this for B12.1?

jshughes pushed a commit that referenced this issue Sep 8, 2021
CCB-329 - Broaden Definition of Attribute aperture
fefd6d5 
CCB-329 - The aperture attribute is defined for optical instruments with circular light collecting openings. Telescopes at radio wavelengths are not necessarily circular and may be arrays. Broadening the definition will make the attribute more useful at all wavelengths.

Change definition of aperture to: "The aperture attribute provides a measure of the effective collecting area of the telescope -- its diameter (if single and circular) or its equivalent diameter (if non-circular and/or an array).  For purposes of this definition, aperture efficiency is assumed to be 100 percent."

Resolves #403
Refs CCB-329
@jshughes jshughes mentioned this issue Sep 8, 2021
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jshughes added a commit that referenced this issue Sep 8, 2021
@jshughes
CCB-329 - Broaden Definition of Attribute aperture (#405)
2bfe380 
CCB-329 - The aperture attribute is defined for optical instruments with circular light collecting openings. Telescopes at radio wavelengths are not necessarily circular and may be arrays. Broadening the definition will make the attribute more useful at all wavelengths.

Change definition of aperture to: "The aperture attribute provides a measure of the effective collecting area of the telescope -- its diameter (if single and circular) or its equivalent diameter (if non-circular and/or an array).  For purposes of this definition, aperture efficiency is assumed to be 100 percent."

Resolves #403
Refs CCB-329

Co-authored-by: John Hughes <John.S.Hughes@jpl.nasa.gov>
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CCB-329 - Broaden Definition of Attribute aperture NASA-PDS/pds4-information-model
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