KAIT Technical Information


The KAIT telescope is located in the dome formerly used by the 24 Inch telescope at Lick Observatory atop Mt. Hamilton, just East of San Jose California. The geodetic postion is taken from Steve Allen's listings

Latitude         +37:20:36.04
East Longitude  -121:38:05.36    
Altitude                 1300 meters


The telescope is a 30 inch Ritchey Chretien on an equatorial mount.
Mirror Diameter    76 cm
Scale            33.2 arc-seconds per mm
Focal Ratio      8.2
North limit      +70 degrees (will increase in future)
Sourth limit     -34 degrees 
East limit       -73 degrees
West limit       +73 degrees

CCD Camera

The camera is a Peltier cooled CCD made by Apogee Instruments model AP7 using a SITe sensor. The chip is back illuminated and coated to enhance the blue response. Additional details of the camera can be found HERE
Pixel size       24.0 microns
Pixel scale      0.8   arc-seconds per pixel
Number of rows  500
Number of cols  500

The orientation of the images is such that Dec decreases with rows and RA decreases with columns. This means that using the tv command, North is to the top and West is to the right; images have the same handedness as on the sky. With SAOIMAGE North is again to the top, but West is to the left so the handedness is the mirror image of the Palomar print. In FITS jargon NAXIS1 is RA--TAN and NAXIS2 is DEC--TAN.


clear   8mm       A1 quartz from Esco
U       8mm 
B       8mm
V       8mm 
R       8mm  
I       8mm 
Stromgren u, b, v, y, hbeta unknown thickness
CH4 8900 Angstrom
H2O+ 6199
Halpha ?mm  poor quality filter
SII 6725 ?mm
p0 		polarizer (see below) 
p45     polarizer
p90     polarizer
p135    polarizer

Filters are 8mm thick and 1 inch diameter. The UBVRI filters were made by Custom Scientific. (Pre 2000 filters were from Spectro-Film -Billerica MA. to the specifications of Table 6 in Bessell 1990, PASP, 102, page 1181). (BVRI Filters for the old thirty inch were taken from 1983 Schild 1983,P.A.S.P, 95,1021.)

The polarizers are wide band and are mounted so that the axis of the polarizers (in the focal plane) point to the azimuth 0 (North), 45, 90 (East), and 135 degrees. By the axis of the polarizer I mean the orientation similar to the top of polarized sunglasses. (Oriented to minimize dielectric reflections from the road).


Attached on the North side of the telescope is a small video frame rate CCD camera with a 230mm F:3.8 C-mount lens. finder
KAIT page | BAIT page

Last Updated March 14,2001 by

Email: rtreffers@astro.berkeley.edu