telescope | Subaru Telescope | UH 88 telescope | |
focus | Cassegrain (w/o AO188) | Nasmyth (w/ AO188) | Cassegrain |
pixel scale | 0″.096 lens-1 | 0″.084 lens-1 | 0″.43 lens-1 |
field of view | 3″.6 | 3″.1 | 16″ |
spectral resolution | R ∼ 1200 | ||
wavelength coverage | 360 - 920 nm† | 640 - 920 nm† | 360 - 920 nm† |
sensitivity‡ [erg s-1 cm-2 Å-1 arcsec-2] |
~7 x 10-17 at 500 nm ~5 x 10-17 at 660 nm |
~5 x 10-17 at 660 nm ~5 x 10-17 at 750 nm ~1.2 x 10-16 at 900 nm |
N/A |
wavelength [Å] |
exposure time [s] |
object flux in the aperture [erg cm-2 s-1] |
S/N ratio | |
old CCD | new CCD | |||
6600 (No.4) | 300 | 7 x 10-17 | 3.1 | 7.9 |
6600 (No.4) | 3600 | 6 x 10-18 | 3.0 | 6.6 |
7500 (No.5) | 300 | 9 x 10-17 | 3.0 | 8.1 |
7500 (No.5) | 3600 | 8 x 10-18 | 3.1 | 7.0 |
9000 (No.5) | 300 | 2 x 10-16 | 2.7 | 14 |
9000 (No.5) | 3600 | 2 x 10-17 | 3.1 | 14 |
telescope | Subaru Telescope | UH 88 telescope | |
focus | Cassegrain (w/o AO188) | Nasmyth (w/ AO188) | Cassegrain |
pixel scale | 0″.056 pixel-1 | 0″.050 pixel-1 | 0″.25 pixel-1 |
field of view | 1′.9 | 1′.7 | 8′.5 |
spectral resolution | R ∼ 400 and 7000 | ||
wavelength coverage | 400 - 700 nm | 640 - 700 nm | 400 - 700 nm |
sensitivity [erg s-1 cm-2 arcsec-2] |
~1.2 x 10-16 at 550 nm (R ~ 200) ~1.3 x 10-16 at 700 nm (R ~ 250) |
N/A | N/A |
telescope | Subaru Telescope | UH 88 telescope | |
focus | Cassegrain (w/o AO188) | Nasmyth (w/ AO188) | Cassegrain |
pixel scale | 0″.056 pixel-1 | 0″.050 pixel-1 | 0″.25 pixel-1 |
field of view (imaging) | 1′.9 | 1′.7 | 8′.5 |
slit length | 1′.5 | 1′.3 | 6′.7 |
spectral resolution (longslit) | R ∼ 1200 for the narrowest slit | ||
wavelength coverage | 360 - 920 nm† | 640 - 920 nm† | 360 - 920 nm† |