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. 2021 Feb 18;217(2):29. doi: 10.1007/s11214-021-00795-x

Table 2.

Mastcam-Z Effective Wavelengthsa, Band Passesb, Spectral Leakagec, and Reference DN Leveld (Fref)

Left Mastcam-Z Right Mastcam-Z
Filter λeff±HWHM (nm) Leakage Fref(DN) Filter λeff±HMWM (nm) Leakage Fref(DN)
L0R 630±43 0.43% 6185 R0R 631±43 0.4% 6151
L0Ge 544±41 0.26% 7212 R0Ge 544±42 0.36% 6984
L0B 480±46 1.1% 6834 R0B 480±46 1.2% 6821
L1f 800±9 0.66% 392 R1f 800±9 0.63% 396
L2f 754±10 0.6% 596 R2 866±10 0.62% 219
L3f 677±11 0.84% 1171 R3 910±12 0.61% 165
L4f 605±9 0.67% 1250 R4 939±12 0.64% 114
L5f 528±11 0.46% 1645 R5 978±10 0.63% 47
L6f 442±12 1.0% 1425 R6 1022±19 0.48% 59
L7 590±88,ND6g R7 880±10, ND5g

aEffective Wavelength (λeff) is defined as the weighted average of wavelength with the normalized system spectral response (rλ,k¯, see Sect. 3.5) and solar radiance at the top of the atmosphere (Soph) in units of [phsm2srnm]: λeff=rλ,k¯Sophλdλrλ,k¯Sophdλ. The system spectral response includes the effects of the optics, filters, and detector quantum efficiency (see Sect. 3.5)

bBandpasses are provided as the Half-Width-Half-Maximum (HWHM), which is defined as one-half the difference between the two wavelengths at which the response is half of the peak in-band response

cSpectral Leakage is defined as the percentage ratio of the integrated out-of-band response to the integrated in-band-response of rλ,k¯. For purposes herein, the in-band to out-of-band cutoff is defined as the closest wavelengths on either side of λeff that correspond to 1% of the peak in-band response

dThe reference DN level (Fref,k) is defined as the above-bias signal of a 10 ms exposure observing, through filter k, a perfectly diffuse and white sunlit surface on Mars at zero-incidence when Mars is at perihelion (1.38 AU) and ignoring atmospheric attenuation (see Sect. 4.1.6)

eThere are two identical green filters per 2 × 2 Bayer unit cell (see Fig. 3)

fFilters where the narrowband response partially or completely blocks one or more of the Bayer RGB filter responses

gNDX refers to a 10X neutral density coating for solar imaging