ING ANNOUNCEMENT OF ADAPTIVE OPTICS SERVICE OBSERVING OPPORTUNITY During the periods 31 May 2002; 21-22 June 2002; 3-5 July 2002 there will be opportunities for 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 summarize: 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 service time limitation rule of four hours is being relaxed, all proposals will be considered. THE DEADLINE FOR RECEIPT OF SERVICE PROPOSALS IS MIDNIGHT ON THE LAST DAY OF EACH MONTH when they will be automatically transmitted to the Service Programme Referees for assessment. ============================================================= * To unsubscribe from [INGNEWS] send to majordomo@ing.iac.es the command "unsubscribe ingnews" in the body of the message. Please don't type in the quotation marks and leave the subject field and the rest of the body empty. * You can subscribe to this mailing list by sending an email to majordomo@ing.iac.es with the message "subscribe ingnews " in the body of the message, where should contain your email address, e.g. einstein@xyz.ac.uk. You can subscribe a colleague in the same way if you have subscribed your address previously. * For further information on ING, point your browser to: http://www.ing.iac.es/ =============================================================