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Action | from | to | purpose | status |
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Check here for recent discussions (mostly the first one which addresses these questions): https://wiki.ivoa.net/twiki/bin/view/IVOA/UCDList_1-4_2017Jun_2018Feb_RFM https://wiki.ivoa.net/twiki/bin/view/IVOA/RFMforUCD | ||||
Coordinates:
| SE | Not needed | ||
Maps: | SE | |||
• UCD needed for VOevents | SE | |||
• Clarify usage of inf / -inf / Nan in ADQL (should apparently exist, as per DALI - but do not) | SE | |||
• Correct/clarify definition of reflectance in 2018 sheet: Radiance factor is the same as I/F; in this case, this is divided by input irradiance (not radiance), i.e. by solar flux. We can keep phys.reflectance for the reflectance factor (standard quantity for lab measurements, currently listed as phys.reflectance.factor) = ratio of radiance to that of a Lambertian disk at the same distance and illuminated under the same incidence (also called radiance coefficient) In any case, this is not necessarily similar to albedo (which is typically integrated spectrally, and is then related to thermal equilibrium). I would keep albedo for more general purpose. | SE | |||
How do we handle asymmetric error bars? Some services need to have stat.error.min/max | SE | |||
How do we specify an additive constant / offset? The only close match is arith.zp, specific | SE |