Standard Star Instructions » History » Version 8
Douglas Tucker, 08/29/2013 10:09 AM
| 1 | 1 | Douglas Tucker | h1. Standard Star Instructions |
|---|---|---|---|
| 2 | 2 | Douglas Tucker | |
| 3 | 6 | Douglas Tucker | * Standard star fields are to be observed every evening and morning twilight that appear to be clear, |
| 4 | 6 | Douglas Tucker | where "clear" is determined by a quick visual inspection of the RASICAM image, of the TASCA image, or |
| 5 | 6 | Douglas Tucker | (!) of the sky itself. |
| 6 | 1 | Douglas Tucker | |
| 7 | 6 | Douglas Tucker | * If possible, for each twilight period, 3 standard star fields should be observed: one at low airmass |
| 8 | 6 | Douglas Tucker | (X<1.25), on at medium airmass (X=1.25-1.65), and one at high airmass (X=1.65-2.10). It is generally |
| 9 | 6 | Douglas Tucker | better to observe the high-airmass field first, since its airmass will be changing the most rapidly. |
| 10 | 1 | Douglas Tucker | |
| 11 | 6 | Douglas Tucker | * For half-nights, 1 or 2 fields -- preferably a low-airmass field and a high-airmass field -- should be |
| 12 | 6 | Douglas Tucker | observed just before switchover. (If only one field, a high-airmass field is preferred.) |
| 13 | 6 | Douglas Tucker | |
| 14 | 6 | Douglas Tucker | * For evening twilight, use the *DES/standard/Yzirg* scripts (which start with Y-band and end with g-band); |
| 15 | 6 | Douglas Tucker | for morning twilight or pre-switchover, use the *DES/standard/grizY* scripts (which start with g-band and |
| 16 | 6 | Douglas Tucker | end with Y-band). (For those rare nights when we also observe in u-band, please use the corresponding |
| 17 | 6 | Douglas Tucker | "DES/standard/Yzirgu" and "DES/standard/ugrizY" scripts.) |
| 18 | 6 | Douglas Tucker | |
| 19 | 2 | Douglas Tucker | h2. The Standard Fields |
| 20 | 2 | Douglas Tucker | |
| 21 | 2 | Douglas Tucker | h3. SDSS Equatorial Fields: "Golden Standards" |
| 22 | 8 | Douglas Tucker | |Field Name | RA | Dec | |
| 23 | 2 | Douglas Tucker | |SDSSJ0000-0000 | 00:00:00 | +00:00:00 | |
| 24 | 2 | Douglas Tucker | |SDSSJ0100-0000 | 01:00:00 | +00:00:00 | |
| 25 | 2 | Douglas Tucker | |SDSSJ0200-0000 | 02:00:00 | +00:00:00 | |
| 26 | 2 | Douglas Tucker | |SDSSJ0320-0000 | 03:20:00 | +00:00:00 | |
| 27 | 2 | Douglas Tucker | |SDSSJ0843-0000 | 08:43:00 | +00:00:00 | |
| 28 | 1 | Douglas Tucker | |SDSSJ0933-0005 | 09:33:00 | -00:05:00 | |
| 29 | 2 | Douglas Tucker | |SDSSJ0958-0010 | 09:58:00 | -00:10:00 | |
| 30 | 1 | Douglas Tucker | |SDSSJ1048-0000 | 10:48:00 | +00:00:00 | |
| 31 | 1 | Douglas Tucker | |SDSSJ1227-0000 | 12:27:00 | +00:00:00 | |
| 32 | 1 | Douglas Tucker | |SDSSJ1442-0005 | 14:42:00 | -00:05:00 | |
| 33 | 1 | Douglas Tucker | |SDSSJ2140-0000 | 21:40:00 | +00:00:00 | |
| 34 | 1 | Douglas Tucker | |SDSSJ2300-0000 | 23:00:00 | +00:00:00 | |
| 35 | 4 | Klaus Honscheid | |
| 36 | 2 | Douglas Tucker | |
| 37 | 6 | Douglas Tucker | h3. HST CalSpec/Other Fields: "Silver Standards" |
| 38 | 3 | Douglas Tucker | |C26202/HST | 03:32:30 | -27:46:05 | |
| 39 | 3 | Douglas Tucker | |MaxVis | 06:30:00 | -58:45:00 | |
| 40 | 2 | Douglas Tucker | |
| 41 | 3 | Douglas Tucker | |
| 42 | 3 | Douglas Tucker | h3. Graham E-Region Fields (Southern u'g'r'i'z' fields): "Bronze Standards" |
| 43 | 3 | Douglas Tucker | |_. Field Name |_. RA |_. Dec | |
| 44 | 3 | Douglas Tucker | |E1-A | 01:24:50 | -44:33:40 | |
| 45 | 3 | Douglas Tucker | |E2-A | 04:03:00 | -44:41:45 | |
| 46 | 3 | Douglas Tucker | |E3-A | 06:42:54 | -45:05:06 | |
| 47 | 3 | Douglas Tucker | |E4-A | 09:23:44 | -45:21:02 | |
| 48 | 3 | Douglas Tucker | |E5-A | 12:04:11 | -45:24:03 | |
| 49 | 3 | Douglas Tucker | |E6-A | 14:45:33 | -45:15:34 | |
| 50 | 3 | Douglas Tucker | |E8-A | 20:07:22 | -44:37:01 | |
| 51 | 3 | Douglas Tucker | |E9-A | 22:45:37 | -44:22:47 | |