Dear Observer, The commissioning of the absolute photometry AOTs PHT05 and PHT25 has been completed. Based on the recommendations of the ISOPHOT instrument team, I have released these AOTs in their present form as of 20/12/96. Observers who have requested absolute photometry AOTs can now include these AOTs in their programmes using PGA. A full description as well as additional information concerning the usage of these AOTs are now available on the ISO Pages of the World Wide Web. Best Regards M.F. Kessler ISO Project Scientist