Radio Reference Frame Image Database
The products presented here are the result of an ongoing program to image radio reference frame sources on a regular basis. Our goal is to establish a database of images of all radio reference frame sources at the same wavelengths as those used for precise astrometry. These data allow us to monitor sources for variability or structural changes so they can be evaluated for continued suitability as radio reference frame objects.
- NRAO) Very Long Baseline Array (VLBA) telescope at radio frequencies of 2.3 GHz and 8.4 GHz. Images using the VLBA together with up to 10 geodetic antennas are available for most sources.
- NRAO) Very Long Baseline Array (VLBA) telescope at radio frequencies of 24 GHz and 43 GHz.