Solar Radius Observations by the Michelson Doppler Imager

Details Solar Radius Observations by the Michelson Doppler Imager Solar Radius Observations by the Michelson Doppler Imager

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001agufmsh11b0715b&link_type=abstract

American Geophysical Union, Fall Meeting 2001, abstract #SH11B-0715

Physics

7529 Photosphere, 7536 Solar Activity Cycle (2162), 7537 Solar And Stellar Variability

Scientific paper

The Michelson Doppler Imager (MDI) instrument on the SOHO spacecraft is approaching the completion of six years of observing the Sun. During this period, full disk continuum images with 4 arc-second resolution have been taken at a cadence of at least four images per day. Because of the absence of atmospheric blurring and the stable environment of the L1 halo orbit, these images provide a long term measurement of the solar limb. The determination of changes in the solar radius from these images is affected by both an annual thermal variation in the MDI front entrance window and by a slow shift in the instrument focus due to aging of the entrance bandpass filter. These effects are being modeled in order to determine an estimate of the solar cycle variation in the solar radius. This research is supported by NASA grant NAG5-10483 at Stanford University.

Affiliated with

Also associated with

No associations

Rating

Solar Radius Observations by the Michelson Doppler Imager 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 Solar Radius Observations by the Michelson Doppler Imager, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solar Radius Observations by the Michelson Doppler Imager will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1379820