There are 1378 RASS3 fields, each 6.4x6.4 degr covering the whole sky. Fields are overlapped by at least 0.23 degr. This service has recently been significantly enhanced. The processing of image requests has been moved to a more powerful machine, resulting in typically a factor of three improvement in speed. A typical 10'x10' image near the centre of a DSS plate will be returned in around 10 seconds or less.
Larger images are now available.
Image may be up to 1.5x1.5 degr, and up to 5400x5400 pixels. Positions and sizes of up to 15 DSS images can be entered at once. A table of results is displayed. A new service for browsing very large catalogues has been introduced. Includes coordinates accurate to 25 milliarcsec or better, B and V magnitudes and proper motions.