H. E. Bond 7/25/03 SMARTS 1.5m Service Observing Program Night of Thursday 2003 July 31-Aug 1 Times are UT-4 Sunset: 18:08 Twilight: 6:06 Twilight: 19:32 Sunrise: 7:28 Duration of night: 10:34 Moon age +2 days. RA/Dec: 1102+11 Sets: 20:42 Sidereal time evening twilight: 15:26 midnight: 19:54 morning twilight: 02:00 .............................................................................. Civil date Setup Program(s) Jul 31 13/I Observing plan: http://www.stsci.edu/~bond/s15m030731.plan YALE 03a-99/Morgan STSI 03a-99/Bond ............................................................................. Name Slit Filter Coll Grating Tilt & Comp,exp Ystart Ysize Yspec Blaze w.l. cov. Res (A) 13/I 110.5 clear 600? 13 11.58 He-Ar 50 TBD TBD TBD 4450 3146-9374 17.2 .............................................................................. ******************************* NOTE ******************************* Tonight we will use a new grating 13 setup, called 13/I. Note that it uses a new slit width, a different filter, a new tilt, and a different comparison exposure time. Pablo Candia can give you lots of advice on this setup if you need help, since he uses it all the time. In afternoon or during dinner: - Install 13/I grating setup - check focus - obtain at least 10 Zero frames - obtain at least 5, preferably 10, flat-field frames (projector or dome). Make sure they are well exposed but just short of being saturated at any location. - run some tests to determine the best comparison exposure. There should be a good number of well-exposed lines all across the spectrum, with few or no saturated lines. Pablo recommends 50 sec. Here is the 13/I target list. Make sure that the WFI 2026 target is observed once it reaches a suitable airmass! Pgm Pri Target RA (J2000) Dec mag Exp Cmp Remarks YALE 03a-99 1++ WFI 2026 20 26 10.5 -45 36 27 17.1 3x1200 see below After obtaining the first 1200 sec exposure, check to make sure it is not saturated, or is not badly underexposed. Adjust the 1200 sec exposure if necessary for the remaining observations. The astronomer is trying to find one or more emission lines in the spectrum, from which the redshift can be measured. Add more exposures if the spectra look very weak. This is our numero uno target for tonight, so make sure to get good results. The astronomer, Nick Morgan, may contact you by e-mail with further details. Obtain comparison spectrum before and after each of the 1200 s exposures. Note: finding charts for the Yale target, if needed, can be found at: http://www.stsci.edu/~bond/wfi2026_8arcmin.ps http://www.stsci.edu/~bond/wfi2026_2.4arcmin.eps Other targets for tonight are the following. Most of them are central stars of planetary nebulae. Put the slit on the central star. The magnitudes in some cases are only approximate; if there is no obvious central star, or if it looks much fainter than ~16.5 mag, skip the observation. One exception to the above is V605 Aql; it should be observed even if it looks very faint (it will have strong emission lines and no continuum). If you find that the spectra are consistently underexposed with the listed exposure times, then increase the time accordingly. Pgm Pri Target RA (J2000) Dec mag Exp Cmp Remarks STSI 03a-99 1+ M104-BX 12 40 12.2 -11 34 19 16.3 3x500 2 STSI 03a-99 1 ESO 040-PN11 13 34 14.3 -75 46 31 16.4 3x500 1 STSI 03a-99 1 1350-61 13 54 15.0 -62 14 03 12.9 3x45 1 STSI 03a-99 1 SuWt 2 13 55 43.2 -59 22 41 12.3 3x45 1 STSI 03a-99 1+ IC 972 14 04 25.9 -17 13 40 ~16 3x500 1 STSI 03a-99 2 Me 2-1 15 22 19.3 -23 37 31 14.2 3x120 1 STSI 03a-99 2 NGC 5979 15 47 41.2 -61 13 06 13.0 3x60 1 STSI 03a-99 1 Sp 1 15 51 41.0 -51 31 29 14.0 3x120 1 STSI 03a-99 2 Lo 13 16 09 45.9 -30 55 08 ~16 3x500 1 STSI 03a-99 1 Lo 14 16 11 45.8 -51 17 56 10.1 3x30 1 STSI 03a-99 2 Sn 1 16 21 04.5 -00 16 13 14.7 3x200 1 STSI 03a-99 1 HaTr 4 16 45 00.3 -51 12 22 ~15 3x250 1 STSI 03a-99 2 IC 4642 17 11 45.4 -55 24 03 13.5 3x120 1 STSI 03a-99 2 Na 1 17 12 51.9 -03 16 01 15.8 3x500 1 STSI 03a-99 2 Lo 17 18 27 51.1 -37 15 53 ~15 3x250 1 STSI 03a-99 2 H 2-48 18 46 35.2 -23 26 48 13.4 3x75 1 STSI 03a-99 2 Hb 7 18 55 37.8 -32 15 49 13.9 3x150 1 STSI 03a-99 2 A 51 19 01 01.4 -18 12 16 15.4 3x350 1 STSI 03a-99 1 Sh 2-71 19 02 00.3 +02 09 11 13.4 3x150 1 STSI 03a-99 1+ HaWe 12 19 05 42.9 -25 23 55 10 3x45 1 STSI 03a-99 1+ V605 Aql 19 18 20.6 +01 46 59 ~18 3x500 2 STSI 03a-99 2 NGC 6778 19 18 25.0 -01 35 47 15 3x250 1 STSI 03a-99 2 HDW 11 19 31 07.2 -03 42 32 16.6 3x900 1 STSI 03a-99 2 NGC 6804 19 31 35.2 09 13 31 14.3 3x180 1 STSI 03a-99 1 A 65 19 46 34.2 -23 08 13 15.9 3x550 1 STSI 03a-99 2 A 72 20 50 02.1 13 33 29 16.1 3x600 1 STSI 03a-99 2 PRMG 1 21 05 53.6 -37 08 41 16.6 3x900 1 STSI 03a-99 2 IC 5148-50 21 59 35.1 -39 23 08 15.5 3x350 1 STSI 03a-99 2 NGC 7293 22 29 38.5 -20 50 14 13.4 3x75 1 STSI 03a-99 1+ Feige 110 23 19 58.3 -05 09 56 11.8 3x60 1 STSI 03a-99 1 Lo 1 02 56 58.4 -44 10 18 15.2 3x275 1 STSI 03a-99 1 NGC 1360 03 33 14.6 -25 52 18 11.3 3x30 1 STSI 03a-99 2 PRTM 1 05 03 01.7 -39 45 45 15.6 3x400 1 STSI 03a-99 1+ H 3-75 05 40 45.0 12 21 23 15 3x300 1 exp time calculation: V838 Mon V=16.0 reddened B star: 26/I 3x1500 sec gives good sp. scaling by dispersion => 4.3/17.2 => 3x375. Call it 500 to be safe. This gives 3x1200 at 17th mag, in good agreement with Nick Morgan. .............................................................................. General Notes: Pri: Target priority. 1 = observe object if possible 2 = extra targets; observe only if no Priority 1 target is available 3 = backup targets; low priority RA & Dec: all coordinates are accurate to 1"; charts can be generated by operator as necessary using LEDAS or DSS. Charts for many objects were prepared at telescope in February and should be available. Cmp: 1 means take comparison spectrum only before target exposures; 2 means before and after .............................................................................. Questions may be addressed to: Howard Bond bond@stsci.edu Nick Morgan nicholas.morgan@yale.edu (YALE program)