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Observing Programs at Keck Observatory with MOSFIRE on October 01, 2014 for Prochaska + Associates

This page organizes all of the projects for MOSFIRE on October 01. Each program page should include: (i) the optimal setup for the observation; (ii) a target list with finder charts and recommended exposure times; (iii) any additional notes of interest (S/N desired, priority of targets); (iv) Worst conditions (seeing, clouds) under which observations will still be useful.


This program aims to centroid the systemic redshift of the foreground quasars in the QPQ8 sample of projected quasar pairs. Narrow near-infrared emission lines provide more precise measurement of the systemic redshift than the broader optical emission lines. [OIII]5007 has the smallest scatter from the systemic. Hbeta and Halpha emission lines are more prominent and have no offset from the systemic. Some QPQ8 foreground quasars already have their near infrared data taken with NIRI, NIRSPEC or GNIRS. For the remaining, we checked the observed wavelengths of [OIII], Hbeta and Halpha. If they do not clobber with sky lines and fall outside of atmospheric windows, we list them here for MOSFIRE follow up.


APOJ0409-0411 04 09 55.87 -04 11 26.9 2000.0 [DONE; JXP on 02OCT2014]

APOJ0341+0000 03 41 38.15 +00 00 02.9 2000.0 [DONE; JXP on 02OCT2014]


For J0409-0411, use the H band for Halpha, make sure cover the red edge of the waveband filter. If Halpha is outside the filter, use the J band filter for Hbeta and OIII. For J0341+0000, use the H band for Hbeta and OIII. In poor weather conditions, use the K band for Halpha.

Finding charts

J0409-0411FG.jpeg J0341+0000FG.jpeg