Back To: FrontPage, BhBsSpring2016 Starlist: starlist

Goal: We seek NaI (5891, 5897) and CaII (3937) absorption line detections in HIRES spectra of BHB stars. That is the primary goal of this program. ' Setup (for HIRESr BHBs, the primary program):

Number

Decker

ECHANG

XDANG

Binning

filter

1

C5

-0.216

0.209

2x1

kv370

2

C1

-0.216

0.209

2x1

kv370

3

C5

-0.090

0.209

2x1

kv370

Setup 3 puts 5891 coverage in 60th and 61st order, increasing S/N by sqrt(2).

All Feb 2017 data will be taken in Setup 3!! It is optimal.

Detailed Nightly Plan


In sets of 5, with priorities and exposure times given. If you fall behind schedule, cut low priority (higher number) objects first.

Time for overheads (e.g. slewing, acquisition, read-out) assumed to be 5 minutes per target.

Time windows for blocks of five are in LST.

Target details (magnitudes, scale heights, etc.) can be found in BhBsSpring2016

Ephemeris for Feb 19, 2017:

  • HALF NIGHT 12 degree Twilight is at 15:38 LST; roughly 6am hawaii time, 8am pacific time. Midpoint is 10:15 LST (UT = 10:35; 12:35am local time; 2:35 am pacific time).


10h15m - 11h36m:

1. J1215+2315 (Priority 3; 2 x 360s)

2. J1216+3308 (Priority 2; 2 x 360s)

3. J1234+4437 (Priority 2; 2 x 300s)

4. J1243+2931 (Priority 2; 2 x 200s)

5. J1257+3446 (Priority 2; 2 x 450s)

11h37m - 13h12m:

6. J1257+1741 (Priority 3; 2 x 360s) - if you are falling behind skip the P3s; there are higher priorities later in the night

7. J1259+1552 (Priority 2; 2 x 360s)

8. J1310+2514 (Priority 3; 2 x 450s)

9. J1324+2038 (Priority 2; 2 x 360s)

10. J1324+2243 (Priority 2; 2 x 600s)

13h13m - 14h45m:

11. J1332+2054 (Priority 1; 2 x 360s)

12. J1335+2820 (Priority 2; 2 x 450s)

13. J1341+2801 (Priority 1; 2 x 450s)

14. J1341+2829 (Priority 1; 2 x 450s)

15. J1341+2806 (Priority 1; 2 x 300s)

14h46m - 15h31m:

16. J1342+2828 (Priority 1; 2 x 450s)

17. J1459+4128 (Priority 1; 2 x 600s) if time on this one, expose for longer...

  • 15h32m: Twilight Standard Star, BD+33 2642 would be great here. May not be necessary, but do it anyway just in case.

BD33


END OF OUR HALF NIGHT. Back to: FrontPage Go to: BhBsPlan4 (Detailed Feb 20 Night Plan Step by Step) Starlist: starlist

BhBsPlan3 (last edited 2017-02-20 00:46:46 by xavier)