FM Walter 8/03/07 rev 8/10 SMARTS 1.5m Service Observing Program 070812 --- EPHEMERIS INFORMATION --- For the night of: Sun, 2007 Aug 12 ---> Mon, 2007 Aug 13 Local midnight = 2007 Aug 13, 4 hr UT, or JD 2454325.667 Local Mean Sidereal time at midnight = 20 41 36.6 Sunset ( 2215 m horizon): 18 24 CST; Sunrise: 7 12 CST Evening twilight: 19 38 CST; LMST at evening twilight: 16 19 Morning twilight: 5 58 CST; LMST at morning twilight: 2 41 Moonset : 18 16 CST Moonrise: 7 39 CST Moon at civil midnight: illuminated fraction 0.001 0.2 days since new moon, RA and dec: 9 40 25, 15 29.9 The sun is down for 12.8 hr; 10.3 hr from eve->morn 18 deg twilight. .......................................................................... Civil date Setup Program(s) Aug 12 9/I CN 07b-055 SUNY 07b-01 SUNY 07b-02 .............................................................................. Name Slit Filter Coll Grating Tilt Comp,exp Ystart Ysize Yspec Blaze w.l. cov. (sec) Res (A) 9/I 110.5 clear 610 9 13.21 He-Ar30 214 280 TBD 4000 3505-6956 8.6 .............................................................................. Proposer's Instructions The general observing plan for each night is to take one 30 minute exposure of 2006 VZ13. This object is only above the observing limits for a very short time (about 25-55 minutes after astronomical twilight), so the priority will be to get a spectrum of this object first thing in the evening. In addition, longer exposures of other comets throughout the night will be taken for comparison. - We will require non-sidereal tracking, so this should be tested before acquiring spectra. However it is possible to take numerous shorter spectra and add them afterward. - the coordinates given below are for each object either at 00:00 UT OR when the object becomes visible the night of observing. For more accurate coordinates, please see the attached text ephemeri. Ephemerides were generated from the JPL Solar System Dynamics Horizons web-intereface (http://ssd.jpl.nasa.gov/horizons.cgi). We used the limits of airmass < 2.0 and elevation > 10 degrees. - all the magnitudes are TOTAL magnitudes of comet. See ephemerides for nuclear magnitudes if available. - the finding charts were generated with the ING Interface (http://www.ing.iac.es/ds/dss1/). In all images, North is to the top, East is to the left, and the size is 5x5 arcminutes. Each chart is for the coordinates listed in the first night or the run (August 5-6th). **If charts are needed for each night, please let A. Moldowan know** --------------------------------------------------------------------- In afternoon or during dinner: - Install 9/I grating setup - check focus if necessary - obtain at least 25 Zero frames - obtain at least 10, preferably 25, flat-field frames (projector or dome) Get well-exposed TWILIGHT SPECTRA at zenith at beginning of night. Aim for three spectra, each with between 5,000 and 30,000 counts per pixel. Remember to take a comp spectrum too. Program Pri Target RA (J2000) Dec mag Exp Cmp T CST Rem CN 07b-055 1 2006 VZ13 12 54 33.33 -03 50 59.6 13.32 2x1800 1 68 18 59 W SUNY 07b-02 2 EX Lup 16 03 05.48 -40 18 25.9 11.4 1x 200 1 12 20 7 Z CN 07b-055 1 2P (Encke) 19 38 56.13 -32 45 14.3 15.07 3x1800 1 99 20 19 CN 07b-055 1 2006 K4 18 06 11.46 -56 30 32.7 14.97 3x1800 1 99 21 58 cal 1 Feige 110 23 19 58.4 -05 09 56 11.8 3x 200 1 19 23 37 SUNY 07b-02 1 EX Lup 16 03 05.48 -40 18 25.9 11.4 1x 200 1 12 23 56 Z CN 07b-055 1 2006 OF2 21 46 44.40 -08 35 12.3 15.25 3x1800 1 99 0 8 CN 07b-055 2 93P 0 56 20.86 +10 47 55.3 16.44 4x2400 1 170 1 47 SUNY 07a-01 2 EF Eri 3 14 13.0 -22 35 41.4 14 19x 300 1 120 4 37 C,RR end 9/I 6 37 ---------------------------------------------------------------------------- If there is any time left before dawn, or you get ahead and have to wait for targets to rise, or if some targets are too faint to acquire, please select from among the following 9/I targets: standard 3 HD 3651 0 39 21.8 +21 15 01.7 5.8 3x 45 1 11 standard 3 HD 14386 2 19 20.8 -02 58 39.5 3.0 3x 5 1 9 standard 3 HD 20618 3 19 55.8 +27 04 16.1 5.9 3x 45 1 11 standard 3 HD 23302 3 44 52.2 +24 6 48 3.7 3x 10 1 9 Just before sunrise, get well-exposed TWILIGHT SPECTRA at zenith IF you could not obtain them at dusk. Aim for 3-5 spectra, each with between 5,000 and 30,000 counts per pixel. Remember to take a comp spectrum too. -------------------------------------------------------------------- Remarks: M: moon within 10 degrees. Skip if not visible in the acquisition TV B: very bright target. Best observed through clouds. C: cataclysmic variable. May be fainter than in finding chart. Skip if not visible. Please be sure not to confuse EF Eri with the brighter star to the west. E: target far to the east. If running ahead, give extra time to the previous target, or observe a backup target if time permits. N: Nova. Will be fainter than on finding chart. NN: new nova. No finding chart available. Should be the brightest star near the coordinates. R: radial velocity standard. RR: repeat until 6:38 CST if running ahead ST: if you cannot observe LTT 4364, please try to observe Feige 110 (in the backup list) later in the night. S4: set slit width to 4.0 arcsec. Center on the nucleus of the galaxy. S5: set slit width to 2.0 arcsec. Center on the nucleus of the galaxy. reset the slit to the normal width for the wavecal. S10: set slit width to 10.0 arcsec. Please reset at the end of the observation. No wavecal is necessary with this exposure. PM: may have significant proper motion. Gl 699 moves north 10"/year, and so should be about 1 arcmin North of the givcen position. W: star very close to 2 air masses at end of observation. Don't start late; do the calibration lamp at the end if it helps. X: Both stars of this pair must be done on the same night. If you can't do both, then skip all the STSI 07a-07 targets and replace with backups. Y: 5 arcsec SE of brighter star. Try to keep the brighter star out of the slit. Skip if the seeing is really bad. Z: monitoring target. Try to maintain spacing between observations. *: if clouds preclude observations of the fainter targets, and all the backup targets have been observed, you may take a long sequence (nx300) of observations of S CrA. --------------------------------------------------------------------- General Notes: Astronomical ephemerides are from SKYCAL,by John Thorstensen Pri: Target priority. + = absolute highest priority 1 = observe object if possible 2 = extra targets; observe only if no Priority 1 target is available 3 = backup/filler targets; low priority Cmp: 1 means take comparison spectrum only before target exposures; 2 means before and after; 3 means before, after, and between each exposure. .............................................................................. Notes about finding charts: RA & Dec: all coordinates are accurate to 1"; charts can be generated by operator as necessary using LEDAS or DSS. Many charts are available via the link from the main 1.5m scheduling page. Charts for many objects should be available at the telescope. .............................................................................. Questions may be addressed to: Alyssa Moldowan amoldowa@uwo.ca Fred Walter fwalter@astro.sunysb.edu (SUNY programs)