Requests for the Gecko runs in 2001A (April)

(Last Update: Tuesday March 27, 10AM)

RunID PI Wavelength Order Grism/Filter Special Request
C37 Fulbright 6330 9 #1604 or RED grism? (status of filter is 'poor'... but usable; change for Red grism?)
See Note 3: take ThAr exposure to help decide between filter and grism.
C9 Landstreet 4570 12 #1411  
    4850 11 BLUE  
    4930 11 BLUE  
C17 Bohlender 6648 8 #1617 This filter has already been used with success at that wavelength.
    4455 12 or 13? Blue See Note 1: use ff lamp exposures to help decide which order.
    7281 8 #1711  
    7800 7 #1704 See Note 2: No need to setup if not enough time.
    4243 13 Blue See Note 2: No need to setup if not enough time.
D Manset 6707 8 #1626 Li I line at 6707
and He I line at 6687
    4130 14 Blue near H delta
4128 and 4130 Si lines
    6562 8 #1617
  • H alpha
  • Bohlender will use this wavelength also, and prefers order 8 (more wavelength coverage) and has used #1617 before.
  • Reminder: order 9 better than 8 from Setup of June 2000 BUT order 8 better than 9 from Setup of May 2000??

Note 1: Bohlender says: "The only thing I'm not certain about is the order at 4455A. I've observed around 4520 in 12th order and 4232 is definitely 13th order but 4455 is uncertain. Can you do your usual test of throughputs with the ff lamp in this region if you don't already have info for it? Landstreet/Sigut have likely observed near here before so you may already have a setup close to this. If it's inconclusive then setups in both orders would be useful and I could quickly test them on the sky on the first night."

Note 2: Bohlender says: "Note that only the first 3 (6648, 4455, and 7281) are for my main program so don't worry about the other two if staff are pressed for time - I can dial them in the afternoon before my run starts and they will only be used for some other quick science if I have time during lulls in available targets for the main program."

Note 3: Fullbright says: "It would be interesting to see a long-exposure arc spectra using the grism. If there is any overlap, it should be clear from the length of the lines in the cross-dispersion direction. If they don't overlap, and it gives more throughput, then I cannot see why one wouldn't use it." So: take one long-exposure Th/Ar spectra with the red grism, and another one with the filter #1604. Then, we will decide which to use.