Image Synthesis

For the choosen event, synthesize images. Before this, search for the already synthesized images in our FTP server since we prepare images for most of the important events. The URL is ftp://nsro-archive.nro.nao.ac.jp/norh/images. It can be reached by following the link in our web page¹¹.

For the one who wants to synthesize by her/himself, do the following two sets of commands. IDL> norh_trans,['1999-8-28 0:56:42'] $<$CR$>$
IDL> norh_synth,['1999-8-28 0:56:42'] $<$CR$>$ ¹²
The former is for transfering the raw data file ( ss17990828... including Fourier components and sz00990828... including ephemeris parameters) from NSRO archive to the current directory. It takes several minutes depending on the network condition. Please ignore the warning message " No such file or directory". If the trasfer is successful, you have files named ss17990828027 ($\approx$ 16 Mbyte) and sz00990828001 ($\approx$ 200 byte). The second command is the actual synthesis procedure and it takes tens of seconds to a few minutes per an image. If it is successful, you will obtain ifa990828_005642 and ifs990828_005642 in the current directory. These are the FITS files whose contents are NoRH (R+L) and (R-L) images, respectively. For spectrum analysis, make also 34 GHz image,
IDL> norh_trans,['1999-8-28 0:56:42'],freq=34 $<$CR$>$
IDL> norh_synth,['1999-8-28 0:56:42'],freq=34 $<$CR$>$ ¹³
Similarly, the raw data files ( ss17990828... and sz00990828... are transformed and image FITS file ifz990828_005642 is made. Note only (R+L) component for 34 GHz image.