| returns a JPEG image centered on (ra,dec), of size (height x width) where the image is scaled to an arbitrary scale (scale). In SDSS the default scale is 0.396127 arcsec/pix. Various drawing options can be specified (opt). |
| ra | center point right ascension in J2000 degrees. |
| dec | center point declination in J2000 degrees. |
| scale | arcsec/pixel (the natural scale of SDSS is 0.396127). |
| height | image height in pixels, limited to [64..2048] |
| width | image width in pixels, limited to [64..2048] |
| opt |
options string, a set of upper-case characters, like 'GPST'. |
| G | Grid | Draw a N-S E-W grid through the center |
| L | Label | Draw the name, scale, ra, and dec on image |
| P | PhotoObj | Draw a small cicle around each primary photoObj |
| S | SpecObj | Draw a small square around each specObj |
| T | Target | Draw a small square around each Target |
| O | Outline | Draw the outline of each photoObj |
| B | Bounding Box | Draw the bounding box of each photoObj |
| F | Fields | Draw the outline of each field |
| M | Masks | Draw the outline of each mask considered to be important |
| Q | Plates | Draw the outline of each plate |
| I | Invert | Invert the image (B on W) |
| This application is based on an underlying web service, ImgCutout.asmx which can be called many different ways, using the SOAP protocol, or just using the standard HTTP GET and PUT interfaces. The formal description is contained in the WSDL, Web Service Description Language document. |
|
The getjpeg service can be directly called from any web page through the HTTP GET
protocol. In order to build a dynamic cutout into your own web page, insert the
following example. Naturally, replace the parameter values with your own.
<IMG SRC="http://skyservice.pha.jhu.edu/dr1/ImgCutout
|