Abstract: Images of spraying the bracken above Abergwyngregyn Agricultural College by helicopter, including images showing men waving white handkerchiefs to signal to the pilot or to assess wind speed (gch20734), Professor E J Roberts being strapped in to the helicopter (gch20737), the helicopter taking off (gch20738) and a view of the area with the helicopter spraying the bracken in the distance (gch20739), together with an image of Professor E J Roberts explaining to a group of Aber farm staff, students, visitors and members of UCNW agricultural staff what the bracken spraying was intended to do (gch20740).
Part of: Casgliad Geoff Charles Collection,
Charles, Geoff, 1909-2002.
Title assigned by cataloguer., [A selection of the images have been published and appeared in Y Cymro, 30 July 1959].
Computer file. Aberystwyth : National Library of Wales, 2002-2004. (Geoff Charles digitisation project) Original, master file captured in uncompressed TIFF format. Minimal tonal adjustments using levels and curves in PhotoShop. Master files archived as pc format TIFFS. On-screen display files resized and adjusted for viewing on gamma 2.2 monitors in PhotoShop and saved in JPEG format. 7 image files; Heidelberg Nexscan F4100 capture device using Linocolor v6.0.4 software. Filter settings: light contour-0.5, dark contour-0.5, smoothness-0.6,contour width-1.0, scan spot size-4.0. Target resolution for hi-res capture was 300dpi at a factor of 450% resulting in +/- 6000 x 5000 pixels; screen res:+/- 600x500 pixels at 72dpi; screen-res and thumbnail copies use JPEG compression at setting: 7 in Adobe Photoshop v6.0; 8 bit grayscale; hi-res TIFFs: Gray Gamma 1.8 icc profile embedded.
2002-2004 ; scanned. Imaging Unit, National Library of Wales, Aberystwyth, Ceredigion.