BSGC Data
Contents
The archive data of Bisei Spaceguard Center at DARTS are mainly astronomical data such as asteroids approaching to Earth. The data are taken using the 1 m telescope at BSGC during the period from Mar 2007 through Mar 2017. Please see BSGC data document for more details.
Directories
The data are divided into directories for each year, 20YY/. Under each directory, there are directories for each day, 20YYMMDD/ (Year, Month, and Day) with mpNN/ or mpNN_[String]/ directories. NN is a number put in numerical order of the day, and [String] is an arbitrary character string that could be a celestial object name, a provisional designation, an asteroid name, a comet name, a spacecraft name, or celestial coordinates, etc. Most of them indicate a personal name of a near-earth object candidate discovered at other observatories in the world on that day or the few days before. These data were taken while tracking the concerned object.
example: 2007/ -- 20070322/ --- mp01/ mp02/ mp03/ mp04/ mp05/ mp06/ mp07/ mp08/ 2017/ -- 20170328/ --- mp01_YFA3BDA/ mp02_YF9EE67/
Files
Each mpNN/ or mpNN_[String]/ directory stores [X,A]_[HHMMSS][n,s][DDMM]_[YYMMDD]_####_[b1,b2,b3,g1,g2,g3,g4].fits files.- [X,A] indicates the telescope tracking method. But they are not strictly different.
- [HHMMSS][n,s][DDMM] shows equatorial coordinates of the telescope pointing position. n and s mean the Northern and Southern Hemisphere, respectively.
- [YYMMDD] is the date with year, month, and day.
- #### is a number in numerical order of continuous observations with the same pointing position.
- [b1,b2,b3,g1,g2,g3,g4] shows the CCD camera chip number. CCDs by Pixel Vision (b1~b3) were used until Jan 2009. After that, the new-type mosaic camera (g1~g4) is used. The pointing coordinate is positioned at the center of the b2 or g3 chip.
example: 20070322/mp01/X_08405n3321_070322_0000_b1.fits = The data pointing at (8h40m50s, 33d21m) using b1 chip of the Pixel Vision's camera on March 22, 2007.