... of ground-based and space-borne telescopes at these objects is not possible either ... the coordinates determined from Schmidt-telescope survey plates that are accurate ...
... Sky Survey (DSS; the Hubble Space Telescope Science Institute) or images from the ... the Flagstaff Astrometric Scanning Transit Telescope of the US Naval Observatory ... or to find a star in the optical range and independently measure its coordinates ...
... POSS1/2 based catalogs (APM, MAPS, USNO, GSC) in optical range, 2MASS and WISE in NIR, IRAS and AKARI in MIR/FIR, NVSS and FIRST in radio and many others, as well as most important surveys giving optical images (DSS, SDSS), variability (GCVS, NSVS, ASAS ...
... The GCVS contains stars with reliably established variations of their optical brightness. ... 0 or B1.0 are [10, 11]; GSC the Hubble Space Telescope Guide Star Catalog, version 1.2 [12]; DM the "Durchmusterung" catalogs ...