WIYN Status - Semester 2014B Proposer Information


Commissioning of the partially populated One Degree Imager (pODI) in static mode is complete. Coherent guide mode is functional, but not yet fully supported by the data reduction system and therefore not recommended for end users yet. Binning has been implemented and is available on a shared risk basis. Observers should be prepared to confirm the measurements they make (surprising results, especially). Information about proposing for pODI as well as its capabilities and performance can be found within the ODI Observing Information web pages.

The pODI imager may be upgraded to a larger format starting possibly as early as the 2014B semester. If that happens, depending on the specific to-be-determined start date for the project, pODI may be unavailable for all of 2014B or it may be available for some time at the beginning of the semester. If the start date of the upgrade is pushed beyond 2014B then we anticipate that pODI will be available for most of, if not all, of 2014B. Please check back at this page for updates, as needed.

Other instrument availability in 2014B

There are several key things to note about the availability of the other 3.5-m instruments in 2014B:

Remote Observing

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.

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: 08-Apr-2014 10:45:05 MST