... images

For example, the completeness magnitudes in the representative survey of Caballero et al. (2007) were $I_{\rm compl.} = 23.3$ mag, $J_{\rm compl.} = 20.6$ mag, allowing the detection of all the objects within the completeness levels in the optical redder than I-J = 2.7 mag ($\sim$M7V).

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...[4.5])

[4.5] is the 4.5 $\mu$m IRAC passband at the Spitzer Space Observatory, still useful during post-cryo phase.

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