Observers are required to establish and document proper observation procedures by contacting with the Support Astronomer (SA) beforehand. Please plan with your SA regarding your research details by ...

The readout sequence of the COMICS detectors (320x240 pixels^2) implies that the readout noise in each of 16 channels (20x240 pixels^2) should be more or less identical. Therefore it should be ...

We have selected 6 arcminutes x 6 arcminutes fields which include three and more >13 V mag. Landolt's photometric standard stars around +50 deg declination. Reference is Landolt 2013, AJ, 146, 131.

The total efficiency is the sum of the grism efficiency, CCD sensitivity, FOCAS optical depth, and the reflectivity of the primary and secondary mirrors.

FOCAS image suffers from optical distortion as presented below. This may affect astrometry and image mosaicing (combining several images taken with dithering techniques). FOCAS team provides software ...

It is not necessary to calculate the coordinates for offset position if the offset is already given. Spec: It is not necessary to calculate the coordinates for offset position since the conversion ...

The following image (upper) shows the typical bias images (1X1 binning) of chip1 (right) and chip2 (left). These images are shown as is (i.e., no image flips/rotation, or, vertical direction for Y and ...

The Subaru Telescope site is located on the summit of Mauna Kea, at approximately 14,000 feet. Visitors may suffer symptoms of severe mountain sickness. The altitude may also aggravate pre-existing ...

Observation can be canceled by bad weather (winter storm, high wind, high humidity, earthquake, etc.) and unexpected serious telescope or instrument trouble. The night canceled due to bad weather will ...

CDj_i(I) Essential for setting control comamnd to telescope (moving object onto the slit etc) CRPIX1 The basic keyword for image features CRPIX2 The basic keyword for image features CRVAL1 The basic ...

If there are any FALCON software running, exit them completely out first, and then restart everything. Start fresh every evening! There are two ways of starting up the FALCON. The only difference is ...

A Servo Error shows up in the YASNAC (central equipment) front panel near the floor. Alarm sign is blinking in the YASNAC front panel. Status lamp on the YASNAC turns ...