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WIYN Status - Semester 2015A Proposer Information
pODI is scheduled for regular observing through mid-November, 2014. After this point, pending final approvals, pODI is expected to be removed for an upgrade. This instrument is not likely to be available for most of semester 2015A; in fact it is not being offered as part of the NOAO call for proposals. There may be a small amount of early shared risk science time with the upgraded instrument available for the university partners in July, 2015. If NOAO continues to be a partner in WIYN, the instrument is expected to be available to the national community starting again in semester 2015B.
Other instrument availability in 2015A
There are several key things to note about the availability of the other 3.5-m instruments in 2015A:
- The two new unique IFUs, HexPak and GradPak, will continue to be offered for shared-risk observing in 2015A. These IFUs are distinguished by having different sized fibers in the same head to optimize the balance between surface brightness and signal-to-noise for various classes of extended objects. They were developed by Matt Bershady's group in Washburn Astronomical Laboratories at the University of Wisconsin-Madison. As they are still PI-level, rather than facility, instruments, it is necessary to work with the PI before submitting a proposal to use the new IFUs. Please read the introduction letters from the WIYN director and the instrument PI. More information and instructions on how to proceed can be found on the Hexpak and Gradpak web pages. SparsePak will continue to be offered as a facility instrument.
- All other WIYN instruments besides pODI share the second Nasmyth port, known as the Hydra port. Thus, (the IFUs)+WHIRC, WHIRC+Visitor Instruments, and Hydra will be block scheduled. The switch between Hydra and the Instrument Adapter System (IAS) that supports the WIYN High-Resolution Infrared Camera (WHIRC), SparsePak, Hexpak, Gradpak, and visitor instruments takes two to five days to complete. Normally there is one change from Hydra to the IAS and another switch back to Hydra each semester. Check back here for further updates.
- The WHIRC throughput has substantially improved with the new coatings. See the WHIRC Hot News for the latest results.
- MiniMo is not expected to be available in 2015A.
Remote observing at WIYN is now available to all qualified observers (see the remote observing policies). Those wishing to observe remotely with ODI must do so from a pre-approved (and tested) workstation. More information can be found on the WIYN Remote Observing page.
WIYN 0.9m Status
In October of 2013, the WIYN 0.9m observatory started commissioning and initial operations with the Half Degree Imager (HDI). The 0.9m consortium is currently offering nights with HDI to the community as shared risk, through proposals submitted to NOAO. S2KB is the backup instrument if HDI becomes unavailable.
S2KB HDI Pixel size 21 x 21 um 15 x 15 um 0.6 x 0.6 arcsec 0.43 x 0.43 arcsec Number of pixels 2048 x 2048 4096 x 4112 Area on sky 20.5 x 20.5 arcmin 29.2 x 29.2 arcmin Readnoise (various modes) 9, 14, 20 4, 5, 7, 10 Readout time (1 x 1 bin) 180s 111 sec/N amplifiers
(N = 1, 2, 4)
Well depth (e-) 240,000 300,000 Coolant LN2 Closed system Quantum efficiency (%) 300nm 10 35 350nm 35 50 400nm 70 75 450nm 75 80 500nm 77 80 650nm 90 75 750nm 80 70 850nm 50 55 950nm 25 25 Key characteristics of S2KB and HDI compared
Any questions can be directed to Eric Hooper (ehooper at wiyn.org).
Last modified: 12-Sep-2014 11:20:37 MST
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