# Name the band white when no filter is in the beam.

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#### Details

• Type: RFC
• Status: Implemented
• Resolution: Done
• Component/s:
• Labels:
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#### Description

We need to define a physical_filter s and a band for when we have no chromatic element in the beam. This is the case for e.g. ComCam in its current configuration at the base centre, and for the LSSTCam when using the CBP.

I propose that the physical_filter be empty and the band be white.

The choice of physical_filter is not all that important, as it can be chosen per-instrument, but band should be common across all cameras.

#### Activity

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Tim Jenness added a comment -

Robert Lupton you can adopt this RFC when you are ready. The CCB approved it and the implication is that "opaque" was also accepted as a band name. Please create the triggered tickets so that we can update the filter definitions in the obs packages.

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Tim Jenness added a comment - Robert Lupton you can adopt this RFC when you are ready. The CCB approved it and the implication is that "opaque" was also accepted as a band name. Please create the triggered tickets so that we can update the filter definitions in the obs packages.
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Tim Jenness added a comment -

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Tim Jenness added a comment -

Robert Lupton can you please add the Jira tickets that will implement this? DM-28459 seems like a reasonable candidate but I imagine we need one for the other obs packages. It should be a trivial fix.

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Tim Jenness added a comment - Robert Lupton can you please add the Jira tickets that will implement this? DM-28459 seems like a reasonable candidate but I imagine we need one for the other obs packages. It should be a trivial fix.
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Tim Jenness added a comment -

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Tim Jenness added a comment -

All instruments now use white/opaque where appropriate.

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Tim Jenness added a comment - All instruments now use white/opaque where appropriate.

#### People

Assignee:
Robert Lupton
Reporter:
Robert Lupton
Watchers:
John Parejko, Merlin Fisher-Levine, Robert Lupton, Tim Jenness, Zeljko Ivezic
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Watchers:
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#### Dates

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Updated:
Resolved:
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#### Jenkins

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