HDAP -- Heidelberg Digitized Astronomical Plates

Through this service you will only find astrometrically calibrated plates. To search by object (e.g., comets), use the plates form or ADQL on the lsw.plates table.

ICRS Position, RA,DEC, or Simbad object (e.g., 234.234,-32.45)
Size in decimal degrees (e.g., 0.2 or 1,0.1)
Relation of image and specified Region of Interest.
Epoch at midpoint of observation
Size of the cutout image [degrees]
Sort by
Limit to items.