We describe the Sloan

The Open Cluster Chemical Abundances and Mapping (OCCAM) survey aims to produce a comprehensive, uniform, infrared-based spectroscopic dataset for hundreds of open clusters, and to constrain key Galactic dynamical and chemical parameters from this sample. This second contribution from the OCCAM survey presents analysis of 259 member stars with [Fe/H] determinations in 19 open clusters, using Sloan Digital Sky Survey Data Release 14 (SDSS/DR14) data from the Apache Point Observatory Galactic Evolution Experiment (APOGEE) and ESA Gaia. This analysis, which includes clusters with R GC ranging from 7 to 13 kpc, measures an [Fe/H] gradient of −0.061 ± 0.004 dex kpc −1 . We also confirm evidence of a significant positive gradient in the α-elements ([O/Fe], [Mg/Fe], and [Si/Fe]) and present evidence for a significant negative gradient in iron-peak elements ([Mn/Fe] and [Ni/Fe]).

A new in situ contact cleaning method for the 3.6-m Canada-France-Hawaii Telescope primary mirror has been developed. The basis for evaluating the method is portable instrumentation that measures spectral reflectance and scattered light. The instrument has been evaluated and a cleaning technique developed using specially prepared witness mirrors exposed to the operating environment at the summit of Mauna Kea, Hawaii. The results of the long-term experiment show that aluminum coatings can be maintained at a near-new reflectance level.