• Created by Unknown User (xiuqin), last modified on Jan 23, 2017

To access PDAC you have to

  1. connect to VPN  at https://vpn.ncsa.illinois.edu
  2. Point your browser at  PDAC portal

The menu (in blue color at top) lists options of data:

  1. LSST Data (SDSS Stripe 82)
    1. roughly 290 square degrees

    2. range:  20h24m < R.A. < 04h 08m   -1.27 deg < Dec < +1.27 deg,   ~290 deg2

    3. examples:
      1. QSO B0257-0007 (3h0m29.81s, +0d4m21.0s  Equ J2000)
      2. UGC 2479 (3h0m40.20s, +0d1m13.7s  Equ J2000)
    4. Some CCD images are missing
  2. External Images
    1. User's own FITS images
    2. URL of a FITS image
    3. IRSA images: 2MASS, WISE, MSX, IRAS
    4. SDSS and DSS images
  3. External Catalogs
    1. currently all IRSA public accessible catalogs are available. 
      1. Gaia is the default catalog
    2. VO simple cone search is supported, user needs to provide base URL.