| March 4, 2004 (Mt. Hopkins) - The 2MASS camera interface has now been ported to Linux (kernel 2.4; Fedore Core 1). Data will now be acquired on a machine with a secure interface to the web: an important step in the automation process. In addition, we have made a functioning command-line interface to command the Telescope Control Computer (TCS) and keep the updated TCS telemetry in shared memory. This shared memory buffer will be accessed by the frame grabber and the telescope feedback interface to the scheduler. |
Click the image for a larger version The first set of camera images (shutter closed) obtained are shown below.
The first images read from the Linux device driver. Images are noise generated from the Leach electronics since the camera has not been cooled. The characteristics of these images are consistent with those read from the old DOS system. Left: The difference between the long (R2, 1.3 sec) and short (R1, 51 ms) reads in the three arrays. Middle and Right: The individual reads in the three arrays, showing the 4 quadrant reads. Pattern noise in the differences are due to a high frequency oscilliscope trigger, to be replaced by a software trigger. This site is maintained by Joshua Bloom [jbloom ((at)) cfa dot harvard d0t edu]. |