An Analysis of the Scale of the USNO 26-inch Refractor

Details An Analysis of the Scale of the USNO 26-inch Refractor An Analysis of the Scale of the USNO 26-inch Refractor

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001dda....32.0302p&link_type=abstract

American Astronomical Society, DDA Meeting #32, #03.02; Bulletin of the American Astronomical Society, Vol. 33, p.1189

Statistics

Applications

Scientific paper

The USNO 26-inch refractor has been used for photographic solar system astrometry for more than a quarter century. Two applications require a knowledge of the telescope's focal plane scale to better than 1 part in 20,000. The first is the astrometric intersatellite observations of the bright satellites of Jupiter and Saturn, which have maximum separations of about 1000 arcsec. The second is for the derivation of spherical equatorial (RA and Dec) positional observations of the major and minor planets relative to the Hipparcos and Tycho Catalogue stars. We have located a calibration field in the Pleiades cluster suitable for the astrometric analysis of the focal plane of the 26-inch. On a 5x7 inch photographic plate (0.75 sq.deg.), the calibration field contains 10 Hipparcos stars as well as an equal number of Tycho stars. Several multiple-exposure plates of the field were taken in 1997, and measured with the newly automated StarScan measuring machine. A new value for the scale of the 26-inch will be presented, which is to be used with our 25-year observational set of plates of the Jovian and Saturnian systems. The focal plane aberrations of the 26-inch will also be discussed.

Affiliated with

Also associated with

No associations

Rating

An Analysis of the Scale of the USNO 26-inch Refractor 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 An Analysis of the Scale of the USNO 26-inch Refractor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An Analysis of the Scale of the USNO 26-inch Refractor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1235601