Koen, ChrisMarang, F.Kilkenny, DavidJacobs, C.2013-12-022013-12-022007Koen, C., et al (2007). Improved SAAO–2MASS photometry transformations. Monthly Notices of the Royal Astronomical Society, 380(4): 1433-14390035-8711http://hdl.handle.net/10566/888Near-infrared photometry of 599 stars is used to calculate transformations from the South African Astronomical Observatory (SAAO) JHK system to the Two-Micron All-Sky Survey (2MASS) JHKS system. Both several-term formal regression relations and simplified transformations are presented. Inverse transformations (i.e. 2MASS to SAAO) are also given. The presence of non-linearities in some colour terms is highlighted.en© 2007 copyright Oxford University Press. This file may be freely used for educational purposes, as long as it is not altered in any way. Acknowledgement of the authors and the source is required.Techniques: photometricInfrared: generalArticle