30 inch (0.76 m) mirror Lick Observatory, Mt. Hamilton, near San Jose, CA Funded by NSF, the Sylvia...
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Transcript of 30 inch (0.76 m) mirror Lick Observatory, Mt. Hamilton, near San Jose, CA Funded by NSF, the Sylvia...
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30 inch (0.76 m) mirror
Lick Observatory,Mt. Hamilton, near San Jose, CA
Funded by NSF, the Sylvia & Jim Katzman Foundation, AutoScope Corp., Sun Microsystems, Hewlett-Packard Co., the University of California (Berkeley and Santa Cruz), and NASA.
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•30 inch R-C telescope, f/8.2•Laser optical encoders•Compact and light-weight•Precise secondary maneuver•20 slot filter wheel
•Apogee AP7 camera, 6.7’ FOV, 0.8”/pix•Off-axis guiding•Automatic weatherstation
Telescope Secondary Cameras Weatherstation
Step motors
Guider
Apogee filterwheel
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2. No. of images per night
700-1300 img/night
3. Interval distribution
1. No. of galaxies monitored:
14,000 7,500 (06/2004)
Obs interval (days)
No.
of
obs
2001-2003 After Jun 2004
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Who found the most nearby SNe?
LOSS 427 SNe (1998 - 2004)Zwicky 236 SNe (1940 - 1980)Mueller 110 SNe (1950 - 2000)
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KAIT
Lick 40-in
Lick 3-m
Keck I/II
10-20% of time
Photometrycalibration
2-3 nights per month
Calibrationphotometry
2 nights per month
spectroscopy
Occasional
spectroscopy
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Distribution of SN followup
Some Good Great Total
SN Ia 57 20 88 165
SN II 32 16 29 77
SN Ibc 2 3 12 17
Total: 259(As of May, 2005)
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• Program to respond to GRB alerts promptly• Interrupt KAIT and take a pre-arranged sequence of images• Reaching 19th mag within 60s of alerts• Unfiltered obs V, I, unfiltered• limitation: small field of view 6.7’ x 6.7’
- Li et al. 2003
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(Li, Filippenko, Chornock, & Jha 2003)
GRB 021211• Obs started at t=105s• 18 data points in 10 min• One of the 2 GRBs with reverse shock emission detected
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GRB 020813
2262 02/08/13 143 2262 02/08/13 63
2493 02/12/11 1082493 02/12/11 352493 02/12/11 232493 02/12/11 45
Trig date Resp. time(s)
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x GRB 04092415” off field !
t = 30s t = 25 min
GRB 040924
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Swift Lick Weather
Lick ObservatoryMay 19, 2005
GRB 050412 (GCN 3256): t = 66sGRB 050416 (GCN 3270): t = 40s
Swift bursts:
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Summary
1. a powerful SN search/followup engine2. capable of catching GRB OA early
KAIT is