Forecast of observing time delay of the strongly lensed quasars with
  Muztagh-Ata 1.93m telescope
  As a completely independent method, the measurement of time delay of strongly
lensed quasars (TDSL) are crucial to resolve the Hubble tension. Extensive
monitoring is required but so far limited to a small sample of strongly lensed
quasars. Together with several partner institutes, Beijing Normal University is
constructing a 1.93m reflector telescope at the Muztagh-Ata site in west China,
which has the world class observing conditions. The telescope will be equipped
with both a three-channel imager/photometer which covers $3500-11000$ Angstrom
wavelength band, and a low-medium resolution
($\lambda/\delta\lambda=500/2000/7500$) spectrograph. In this paper, we
investigate the capability of Muztagh-Ata 1.93m telescope in measuring time
delays of strongly lensed quasars. We generate mock strongly lensed quasar
systems and light curves with microlensing effects based on five known strongly
lensed quasars, i.e., RX J1131-1231, HE 0435-1223, PG 1115+080, WFI 2033-4723
and SDSS 1206+4332. In particular, RX J1131-1231 is generated with lens
modeling in this work. Due to lack of enough information, we simulate the other
4 systems with the public data without lens modeling. According to simulations,
for RX J1131-like systems (wide variation in time delay between images) the
TDSL measurement can be achieved with the precision about $\Delta t=0.5$ day
with 4 seasons campaign length and 1 day cadence. This accuracy is comparable
to the up-coming TDCOSMO project. And it would be better when the campaign
length keeps longer and with high cadence. As a result, the capability of
Muztagh-Ata 1.93m telescope allows it to join the network of TDSL
observatories. It will enrich the database for strongly lensed quasar
observations and make more precise measurements of time delays, especially
considering the unique coordinate of the site.
