Mt. Hamilton Data Repository

Internal Id

Integer

Unique integer ID of the file.

Telescope

String

Name of telescope. One of Shane, APF, Nickel.

Instrument

String

Name of instrument. One of Kast Blue, Kast Red, ShaneAO/ShARCS, Nickel Direct, Nickel Spectrograph.

Observation Date

Date and Time (ISO 8601)

UTC Observation date and time.

Exposure Time

Floating Point

Exposure time in seconds.

Right Ascension

String

Right Ascension as it appears in the FITS header.

Declination

String

Declination as it appears in the FITS header.

Object

String

Name/description of object being observed.

Airmass

Floating Point

Airmass of the observation.

Frame Type

String

Type of the observation. One of dark, flat, bias, science, arc, calibration, focus, unknown.

File Name

String

Relative filename and path within the archive filesystem.

Filter 1

String

Filter wheel 1, named position

Program

String

The name of the program the observation was taken for.

Coversheet Id

String

The coversheet id(s) the observation was taken for.

Observers

String

The name or names of the person taking the observation.

File size

Integer

The size of the file (in bytes).

File Modification Time

Date and Time (ISO 8601)

The date and time the file was last modified.

Date File Becomes Public

Date (ISO 8601)

The date the file became/will become accesible to the public.

Header

ASCII Text File

The full header information from the file in plain text format.

Slit Name

String

The slit name.

Beam Splitter Position

String

The beam splitter position

Grism (Blue only)

String

The grism used. Only applies to Kast Blue.

Grating Name (Red only)

String

The grating used. Only applies to Kast Red.

Grating Tilt (Red only)

Integer

The grating tilt used. Only applies to Kast Red.

Aperture Position

String

Aperture wheel, named position

Filter 2

String

Filter wheel 2, named position

Science Filter

String

External (warm) science filter wheel position

Number of Coadds

Integer

Number of coadds.

True Integration Time

Floating Point

True integration time in seconds per coadd