  Microlensing is a powerful and unique technique to probe isolated objects in
the Galaxy. To study the characteristics of these interesting objects based on
the microlensing method, measurement of the microlens parallax is required to
determine the properties of the lens. Of the various methods to measure
microlens parallax, the most robust way is to make simultaneous ground- and
space-based observations, i.e., by measuring the space-based microlens
parallax. However, space-based campaigns usually require "expensive" resources.
Gould & Yee (2012) proposed an idea called the "cheap space-based microlens
parallax" that can measure the lens-parallax using only $2$ or $3$ space-based
observations of high-magnification events. This cost-effective observation
strategy to measure microlens parallaxes could be used by space-borne
telescopes to build a complete sample for studying isolated objects. This would
enable a direct measurement of the mass function including both extremely
low-mass objects and high-mass stellar remnants. However, to adopt this idea
requires a test to check how it would work in actual situations. Thus, we
present the first practical test of the idea using the high-magnification
microlensing event OGLE-2016-BLG-1045, for which a subset of Spitzer
observations fortuitously duplicate the prescription of Gould & Yee (2012).
From the test, we confirm that the measurement of the lens-parallax adopting
this idea has sufficient accuracy to determine the physical properties of the
isolated lens.
