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GNIRS Temporarily Limited to Cross Dispersed Mode

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In January 2022, itermittent problems began to occur with GNIRS' filter wheel two (FW2). This was found to be due to a faulty ball bearing, which increased drag and friction on the wheel assembly. In order to prevent damage to FW2 or other components internal to GNIRS, a decision was made to avoid FW2 movements entirely. As a result, as of March 15th, 2022, observations were limited to cross dispersed mode only. The faulty ball bearing is to be substituted when GNIRS is warmed up to install the IFU at the end of April 2022. 

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