Results from the Big Bear Solar Observatory's New Digital Vector Magnetograph

Details Results from the Big Bear Solar Observatory's New Digital Vector Magnetograph Results from the Big Bear Solar Observatory's New Digital Vector Magnetograph

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agusm..sp51b06s&link_type=abstract

American Geophysical Union, Spring Meeting 2001, abstract #SP51B-06

Physics

7594 Instruments And Techniques

Scientific paper

During the past several years the Big Bear Solar Observatory has been involved in an aggressive program to modernize the observatory's instrumentation. At the forefront of this effort has been the upgrade of the observatory's digital vector magnetograph (DVMG), which has been recently integrated into the observatory's daily observing program. The DVMG, which is mounted on the observatory's 25 cm vacuum refractor, is a highly sensitive, high cadence magnetograph which studies the FeI line at 630.1 nm. An easy to use GUI observing tool has been written to aid instrument development and data acquisition. This tool automatically calibrates the data and generates near real-time vector magnetograms which will aid space weather forecasting and the support of space weather missions. Also, our plan is to integrate the DVMG data into the HESSI Synoptic Archive. The very sensitive quiet Sun magnetograms, produced by the DVMG, will aid the study of small scale magnetic reconnection at the intranetwork level and its possible contribution to the coronal heating problem. Quiet sun longitudinal and active region vector magnetograms will be presented. Image quality, such as bias, cross-talk, noise levels and sensitivity, will be discussed in addition to the improvements gained in post processing such as image selection and image alignment.

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