Continuum/G-Band/CaK Full-Disk Observation
The observation is carried out with the Solar Flare Telescope in the Mitaka Campus.
Database Calendar
- Database Calendar
- Latest Continuum/G-Band/CaK images
-
Archived Continuum/G-Band/CaK images
2010
2011
Full-Disk Images (“image” directory, jpg format)
Full-disk images at three wavelengths. The image orientation is the Sun’s north at the top and west to the right.
Names of data files are
“mtk_ft_{cak, contgr, gband}_fd_{YYYYMMDD}T{hhmmss}_i.jpg”
for color images of 1024×1024 pixels, which are taken in every about one hour, and
“mtk_ft_{cak, contgr, gband}_fd_{YYYYMMDD}T{hhmmss}_i_today.jpg”
for color images of 2048×2048 pixels (the best resolution in our observations) as the representative images on a day of observation.
Each word and its meaning in the names above is as follows;
- {cak, contgr, gband}: Types of Wavelength. The cak for the calcium-K line, contgr for the continuum (around 530 nm), and gband for the G-band.
- {YYYYMMDD}: Date (UT). The YYYY for year, MM for month, and DD for day (in integer).
- {hhmmss}: Time (UT). The hh for hour, mm for minute, and ss for second.
| Archived Continuum/G-Band/CaK images | |||||||||
| 2010 | 2011 | ||||||||
Full-disk images at three wavelengths. The image orientation is the Sun’s north at the top and west to the right. Names of data files are
“mtk_ft_{cak, contgr, gband}_fd_{YYYYMMDD}T{hhmmss}_i.jpg”
for color images of 1024×1024 pixels, which are taken in every about one hour, and
“mtk_ft_{cak, contgr, gband}_fd_{YYYYMMDD}T{hhmmss}_i_today.jpg”
for color images of 2048×2048 pixels (the best resolution in our observations) as the representative images on a day of observation.
Each word and its meaning in the names above is as follows;
- {cak, contgr, gband}: Types of Wavelength. The cak for the calcium-K line, contgr for the continuum (around 530 nm), and gband for the G-band.
- {YYYYMMDD}: Date (UT). The YYYY for year, MM for month, and DD for day (in integer).
- {hhmmss}: Time (UT). The hh for hour, mm for minute, and ss for second.
Full-Disk Images (“fts” directory, FITS format)
Data of full-disk images taken at the calcium-K, continuum, and G-band in the FITS format. They are named as
“mtk_ft_{cak, contgr, gband}_fd_{YYYYMMDD}T{hhmmss}_i.fts”.
The explanations of {cak, contgr, gband}, {YYYYMMDD}, and {hhmmss} are found in Full-Disk Images (“image” directory, jpg format) table above.
The Dark/flat correction, P-angle correction, and centering of the disk were applied.
Sunspot Detection and Sunspot (Group) Parameters (“spot_data” directory)
Products of the sunspot detection with full-disk continuum images. Names of data files and their contents are as follows:
“pcg{YYYYMMDD}_{hhmmss}_11_contrast.jpg” (Enhanced full-disk image. 1040×1040 pixels jpg),
“pcg{YYYYMMDD}_{hhmmss}_11_detectspot_param.csv” (sunspot detection parameters. csv),
“pcg{YYYYMMDD}_{hhmmss}_11_group.csv” (Positions and spot numbers for groups. csv),
“pcg{YYYYMMDD}_{hhmmss}_11_group.jpg” (Full-disk image with group identification. 1040×1040 pixels jpg),
“pcg{YYYYMMDD}_{hhmmss}_11_solarimage.jpg” (Full-disk image. 1040×1040 pixels jpg),
“pcg{YYYYMMDD}_{hhmmss}_11_spot.csv” (Positions, areas, and brightnesses of indivisual sunspots. csv),
“pcg{YYYYMMDD}_{hhmmss}_11_spot.fts” (Positions, areas, and brightnesses of indivisual sunspots. FITS, header only),
“pcg{YYYYMMDD}_{hhmmss}_11_spot.png” (Positions, areas, and brightnesses of indivisual sunspots. 1040×1040 pixels png),
“pcg{YYYYMMDD}_{hhmmss}_11_spot.txt” (Positions, areas, and brightnesses of indivisual sunspots. plane text),
“pcg{YYYYMMDD}_{hhmmss}_11_spotgroup.fts” (Positions of groups and sunspot relative number. FITS, header only), and
“pcg{YYYYMMDD}_{hhmmss}_11_spotgroup.txt” (Positions of groups and sunspot relative number. plane text).
The explanations of {YYYYMMDD} and {hhmmss} are found in Full-Disk Images (“image” directory, jpg format) table above.