A Comparison of Summed Continuum and CaII K-line Images

Details A Comparison of Summed Continuum and CaII K-line Images A Comparison of Summed Continuum and CaII K-line Images

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003spd....34.0707c&link_type=abstract

American Astronomical Society, SPD meeting #34, #07.07; Bulletin of the American Astronomical Society, Vol. 35, p.821

Astronomy and Astrophysics

Astronomy

Scientific paper

Full-disk photometric images are obtained with two telescopes on a daily basis at the following wavelengths: 393 nm (CaII K-line), 472 nm and 672 nm. In order to explore the characteristics of the fainter facular/network elements, we obtain, on occasion, up to 10 images as closely spaced in time as possible. For the work reported on here, we have used red continuum images at 672 nm (bandpass 10 nm) from the CFDT2 telescope (pixel size 2.5" x 2.5"). These images have been coaligned and summed to reduce noise from non-magnetic intensity features. The customary image processing tools have been applied (Walton et al. 1998). The quiet sun rms intensity fluctuation drops from about 0.58 % on a single image to about 0.21 % on the summed image. On the summed red image, bright facular/network features as faint as about 0.6 % become visible across the solar disk. These features will be compared with those found on images obtained in the CaII K-line to determine their reality in terms of K-line faculae.
This work has been partially supported by grants from NASA (NAG5-7191) and NSF (ATM-9912132).
Reference Walton, S.R., Chapman, G.A., Cookson, A.M., Dobias, J.J. and Preminger, D.G. 1998, Solar Phys. 179, 31-42.

Affiliated with

Also associated with

No associations

Rating

A Comparison of Summed Continuum and CaII K-line Images 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 Comparison of Summed Continuum and CaII K-line Images, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Comparison of Summed Continuum and CaII K-line Images will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-986504