[Federal Register Volume 80, Number 83 (Thursday, April 30, 2015)]
[Notices]
[Pages 24236-24237]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2015-10146]


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DEPARTMENT OF COMMERCE

International Trade Administration


New Mexico Institute of Mining and Technology, et al.; Notice of 
Decision on Application for Duty-Free Entry of Scientific Instruments

    This is a decision pursuant to Section 6(c) of the Educational, 
Scientific, and Cultural Materials Importation Act of 1966 (Pub. L. 89-
651, as amended by Pub. L. 106-36; 80 Stat. 897; 15 CFR part 301). 
Related records can be viewed between 8:30 a.m. and 5:00 p.m. in Room 
3720, U.S. Department of Commerce, 14th and Constitution Ave. NW., 
Washington, DC.
    Docket Number: 14-032. Applicant: New Mexico Institute of Mining 
and Technology, Socorro, NM 87801. Instrument: Delay Line Trolley 
(DLT). Manufacturer: University of Cambridge/Cavendish Lab, United 
Kingdom. Intended Use: See notice at 80 FR 2914-15, January 21, 2015. 
Comments: None received. Decision: Approved. We know of no instruments 
of equivalent scientific value to the foreign instruments described 
below, for such purposes as this is intended to be used, that was being 
manufactured in the United States at the time of order. Reasons: The 
instrument will be used within the Magdalena Ridge Observatory 
Interferometer (MROI) to equalize path lengths traveled by the light 
from a target object, via the telescopes, to the point where 
interference takes place, by acting as a continuously movable retro-
reflector. Each trolley moves continuously within an evacuated pipe in 
order to introduce the optical path delay appropriate for the target, 
time of observation, and inter-telescope separations in use. For most 
of the sky to be accessible, a delay range approximately equal to the 
longest inter-telescope separation must be available, requiring an 
unprecedented monolithic delay line length of almost 200m. The 
instrument is essentially a cat's-eye assembly that is flexure-mounted 
and voice coil actuated on a motorized wheeled carriage, which runs 
directly on the inner surface of the delay line pipe, not on pre-
installed rails. Its position is precisely measured by a laser 
metrology system and computer controlled so as to introduce the

[[Page 24237]]

appropriate optical path compensation as a function of time. The 
following specifications are required for the research: A focus on 
model-independent imaging as opposed to astrometric or precision phase 
or visibility measurement, a wavelength of operation that covers both 
the visible and near infrared, between 600 nm and 2400 nm, 
accommodation for baseline lengths as long as 250m, a concern for 
polarization fidelity in the image, and a requirement to reach a 
limiting group-delay tracking magnitude of H=14 to allow observations 
of extragalactic targets while tracking on the science object rather 
than a nearby reference star.
    Docket Number: 14-034. Applicant: National Institutes of Health, 
Bethesda, MD 20892-8025. Instrument: Falcon II Direct Detection Camera. 
Manufacturer: FEI Company, the Netherlands. Intended Use: See notice at 
80 FR 2914-15, January 21, 2015. Comments: None received. Decision: 
Approved. We know of no instruments of equivalent scientific value to 
the foreign instruments described below, for such purposes as this is 
intended to be used, that was being manufactured in the United States 
at the time of order. Reasons: The instrument will be used in cryo-
electron microscopy experiments, to visualize biological specimens 
suspended in vitreous ice involving recording electron micrographs of 
the highest possible quality and subjecting them to digital image 
analysis to elicit the maximum amount of structural information and 
interpretation, taking into account all pertinent complimentary data. 
Sensor specifications required for this research include a pixel size 
of ~14 [mu]m which predicates a magnification of ~100 kx, optimal 
performance as measured by Detective Quantum Efficiency at a typical 
dose rate of 10-20 e/pixel/second, and protection of the sensor against 
accidental high-dose exposures to the microscope's electron beam.

    Dated: April 24, 2015.
Gregory W. Campbell,
Director, Subsidies Enforcement Office, Enforcement and Compliance.
[FR Doc. 2015-10146 Filed 4-29-15; 8:45 am]
 BILLING CODE 3510-DS-P