Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft

Details Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984soph...92...67h&link_type=abstract

Solar Physics (ISSN 0038-0938), vol. 92, May 1984, p. 67-73.

Astronomy and Astrophysics

Astronomy

5

Magnetic Signatures, Orbital Velocity, Solar Maximum Mission, Spaceborne Astronomy, Ultraviolet Astronomy, Calibrating, Polarimeters, Satellite-Borne Instruments, Spectral Line Width, Ultraviolet Spectrometers

Scientific paper

To infer velocities and longitudinal magnetic fields from Dopplergram and magnetogram signals obtained by the Ultraviolet Spectrometer and Polarimeter on the Solar Maximum Mission, one must know the width of the observed emission line. Although the instrument control system provided for a line-width calibration feature which utilized periodically commanded shifts of the line, it was not always used. However, it is possible to use the time-varying line-of-sight component of the orbital velocity of the spacecraft as a means of calibrating the line width for each pixel in a raster. Such a method based on a least-squares fit of the observed Doppler signal to the line-of-sight component of the spacecraft velocity is described here and then applied to magnetogram observations. As background, the theoretical expressions for the interpretation of the observed Dopplergram and magnetogram signals for both wide and narrow exit slits are also summarized.

Affiliated with

Also associated with

No associations

Rating

Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft 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 Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Analysis of UVSP Dopplergrams and magnetograms and their calibration using the orbital velocity of the SMM spacecraft will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1370269