The following links provide answers to the most common technical questions and concerns. If you have a more specific question that is not addressed here, please contact Rosco's gobo customer service via email gobos@rosco.com
(This link downloads a Microsoft Excel spreadsheet containing useful formulae for determining the size of your projection given a specific beam angle and throw distance. In addition it will help you to calculate the necessary reduction or enlargements to the image area of a gobo in order to meet a certain sized projection.)
