A method for high-resolution C2N profiling in the first few hundred meters

Details A method for high-resolution C2N profiling in the first few hundred meters A method for high-resolution C2N profiling in the first few hundred meters

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004spie.5490..742a&link_type=abstract

Advancements in Adaptive Optics. Edited by Domenico B. Calia, Brent L. Ellerbroek, and Roberto Ragazzoni. Proceedings of the SPI

Physics

Optics

3

Scientific paper

We present the concept of an instrument for the monitoring of the optical turbulence in the first 300 meters above the ground with an altitude resolution of 10 meters approximately. The method is based on a modified version of the generalized scidar. It could be implemented with the use of a 40-cm telescope, a 1376x1040 pixels CCD detector with low readout noise at 20 frames per second, a fast commercial personal computer and a colimating optics. The ideal light source is a bright double star with an angular separation of 180". The principal difference from a conventional generalized scidar is that the scintillation images produced by each star would be fully separated on the detector, whereas in a generalized scidar, the images overlap over a certain region. The image processing consists of selecting on the detector two subframes containing each the scintillation image of one of the stellar component, recenter each image on the corresponding subframe (to correct for telescope missguiding and shaking), and compute the spatial correlation of the two subframes. This procedure is to be repeated several thousand times and the output is the mean correlation. The data reduction would be very similar to that of the generalized scidar, which consists of the inversion of a Fredholm integral equation. This method is particularly interesting to study the turbulence above locations that are a few hundred meters below a given site summit.

Affiliated with

Also associated with

No associations

Rating

A method for high-resolution C2N profiling in the first few hundred meters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with A method for high-resolution C2N profiling in the first few hundred meters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A method for high-resolution C2N profiling in the first few hundred meters will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1809520