Cotton Nero Ax Multispectral Imaging Files

These files were prepared by Christina Duffy, Imaging Scientist, British Library

The specifications for each of the 23 images of each illustration page, light source and filter (if relevant) are below.

MB = Main Both (lights)
ML = Main Left (light)
MR = Main Right (light)
RB = Royal Blue (447nm)
LB = Light Blue (470nm)
CN = Cyan (505nm)
GN = Green (530nm)
AM = Amber (590nm)
RD = Red (627nm)
DR = Dark Red (655nm)
UV = Ultraviolet (365nm)
IR = Infrared (700-90nm)
WB = Wheel Both (Filter wheel with both lights)

1-7 are the visible spectrum
_001 = MB447RB (Both lights at 447 nm which is Royal Blue colour)
_002 = MB470LB
_003 = MB505CN
_004 = MB530GN
_005 = MB590AM
_006 = MB627RD
_007 = MB655DR

8 is the ultraviolet
_008 = MB365UV

9-13 are infrared
_009 = MB700IR
_010 = MB735IR
_011 = MB780IR
_012 = MB850IR
_013 = MB940IR

_014 = WBUVUVB UV light (365nm) with a UV block filter (UV fluorescence)
_015 = WBUVY22 UV light (365nm) with an orange filter Y22
_016 = WBUVUVP UV light (365nm) with a UV pass filter (UV reflection)
_017 = WBUVR25 UV light with a red filter
_018 = WBUVB47 UV light (365nm) with a blue filter
_019 = WBUVG58 UV light (365nm) with a green filter
_020 = WBRBY22 Royal blue light (447nm) with an orange filter
_021 = WBRBR25 Royal blue light (447nm) with a red filter
_022 = WBRBG58 Royal blue light (447nm) with a green filter

_PSC is the colour image made from the addition of 1-7.