ING ANNOUNCEMENT OF ADAPTIVE OPTICS SERVICE OBSERVING OPPORTUNITY
Deadline: 31st May 2001
During the period June 12-15 this summer there is an opportunity to
acquire adaptive optics service time using NAOMI with the ING's
infrared camera INGRID.
A summary of NAOMI/INGRID expected performance may be found at:
http://www.ing.iac.es/Astronomy/instruments/naomi/index.html
but to sumarize: In natural seeing 0.7 arcsec, with a guide star V = 13
lying close to the (on-axis) target, NAOMI will deliver diffraction limited
images in K, FWHM ~ 0.12 arcsec, with Strehl ratio (between the peak heights
of corrected and diffraction-limited point-spread functions) ~ 0.4. Some
predictions of on-axis Strehl ratio as a function of guide-star
apparent magnitude, wavelength and uncorrected seeing follow:
G-star Band Strehl in seeing FWHM"
V mag 1.0" 0.7" 0.5"
11 K 0.46 0.62 0.69 0.12
12 K 0.34 0.51 0.61
13 K 0.19 0.38 0.50
14 K 0.06 0.21 0.35
11 H 0.29 0.45 0.54 0.08
12 H 0.19 0.36 0.46
13 H 0.08 0.24 0.35
14 H 0.02 0.10 0.21
11 J 0.15 0.29 0.38 0.07
12 J 0.08 0.21 0.31
13 J 0.03 0.12 0.22
14 J 0.01 0.04 0.11
Strehl ratio is predicted to fall to half its on-axis value at radii 13,
17 and 23 arcsec from the guide star in J, H and K respectively.
That is, for a given degree of correction, the guide star needs to be closer
to the target for J and H imaging than for K.
Help with pre-appraisal of proposals may be obtained from
the NAOMI instrument specialist Chris Benn (crb@ing.iac.es),
and the NAOMI service application form may be found on the Service
Programme web page at
http://www.ing.iac.es/Astronomy/observing/service/service.html
For this Announcement of Opportunity the usual time limitation
rule of four hours is being relaxed, all proposals will be
considered.
NAOMI SERVICE PROPOSALS MUST BE SUBMITTED BY MIDNIGHT MAY 31st 2001,
when they will be automatically transmitted to the Service
Programme Referees for assessment.
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