ISSN:
1572-9508
Schlagwort(e):
image sharpening
;
peak tracking
;
tip tilt
;
fast guiding
Quelle:
Springer Online Journal Archives 1860-2000
Thema:
Physik
Notizen:
Abstract A new nondestructive readout scheme of the array will be presented which allows first order wavefront corrections of images degraded by atmospheric seeing. During the stare time the integration ramp of the detector signal is sampled every 100 msec. A regressional fit of the sampled data points yields the slope of the integration ramp which is proportional to the flux received by a detector pixel. To this readout mode which is commonly used for IR arrays a small software module can be added to compensate the image motion of the observed object by shifting the nondestructively sampled images. This has the same effect as a tip tilt correction by an active optical element - but without the extra complexity of such a device. First results obtained at the telescope are presented.
Materialart:
Digitale Medien
URL:
http://dx.doi.org/10.1007/BF00430160
