The maximum dimensions for projected digital images, for internal competitions, are 1600 pixels in width by 1200 pixels in height (as shown in the figure below). If your images are larger than this they can easily be resized using photo editing software. Your image can be cropped to any shape you wish but it must fit inside the dimensions shown.
Instructions on how to export your image to the correct size using your editing software can be found by clicking on the Information menu at the top of this page and choosing Saving with Photoshop, Saving with Elements or Saving with Lightroom.
The name of the image file must be no more than 45 characters in length and made up of the image title – author’s name in normal upper/lower case text. Images must be saved as JPEG files
The Sky at Night – Patrick Moore.jpg
These PDF files give detailed instructions on how to produce projected images in each of the most common photo editing software packages.