The Mauna Kea Observatories Near-Infrared Filter Set. II. Specifications for a New JHKL'M' Filter Set for Infrared Astronomy

TL;DR

This paper introduces a new near-infrared filter set for astronomy that enhances measurement accuracy, reduces background noise, and supports adaptive optics, aiming to standardize and improve infrared observations.

Contribution

It presents the specifications for a new MKO-NIR filter set designed to improve infrared photometry and adapt to advanced observational techniques.

Findings

Designed filters reduce background noise and improve photometric accuracy.

Enhanced filter specifications support adaptive optics applications.

Facilitates consistent infrared measurements across observatories.

Abstract

We present a description of a new 1--5 $\mu$m filter set similar to the long-used JHKLM filter set derived from that of Johnson. The new Mauna Kea Observatories Near-Infrared (MKO-NIR) filter set is designed to reduce background noise, improve photometric transformations from observatory to observatory, provide greater accuracy in extrapolating to zero air mass, and reduce the color dependence in the extinction coefficient in photometric reductions. We have also taken into account the requirements of adaptive optics in setting the flatness specification of the filters. A complete technical description is presented to facilitate the production of similar filters in the future.