Skip to main content
. 2023 Sep 20;219(7):53. doi: 10.1007/s11214-023-00996-6

Table 4.

Comparison of JANUS filters with those on previous missions

Wavelength centres [nm] Galileo SSI (a) Voyager Cassini ISS New Horizon Juno JunoCam (f) JUICE JANUS
NAC (b) WAC (b) NAC (c) WAC (c) RALPH (d) LORRI (e)
Clear 611 (440) 497 (360) 470 (290) 611 635 687 (575) 600 (500) - 650 (500)
UV - - - 258 - - - - n.a.
UV - - - 298 - - - - n.a.
UV - 346 - 338 - - - - n.a.
Violet 404 416 426 - 420 - - - 380 (80)
Blue (2) - - - 440 - - - - -
Blue - 479 476 451 460 475 - Bayer Pattern blue 450 (60)
Methane - - 541 - - - - - -
Green 559 566 560 568 567 - - Bayer Pattern green 540 (60)
Sodium-D - - 589 - - - - - 590 (10)
Orange - 591 605 - - - - - -
Methane - - 618 619 - - - - -
Continuum 2-lobed - - - 603, 635 - - - - -
Red 671 - - 650 648 620 - Bayer Pattern red 646 (60)
H-alpha - - - 656 656 - - - 656 (10)
Methane 734 - - 727 728 - - - 727 (10)
Continuum / NIR 756 - - 750 752 - - - 750 (20)
NIR (broad) - - - 752 742 - - - -
NIR (broad) - - - 862 853 880 - - -
Methane 887 - - 889 890 885 - - 889 (20)
Near Infrared - - - 930 918 - - - 910 (80)
Continuum - - - 938 939 - - - 940 (20)
Near Infrared 986 - - 1002 1001 - - - 1015 (130)
NIR (broad) - - - - 1028 - - - -

Notes: Bandwith is given in parentheses for the clear filter (ISS polarization filters and two-filter bandpasses not considered). (a) (Belton et al. 1992), (b) (Smith et al. 1977), (c) (Porco et al. 2004), (d) (Reuter et al. 2008), (e) (Cheng et al. 2008b), (f) (Hansen et al. 2017).