IOAA 2022, Нощни наблюдения — Задача 2. O2

• FOV = 0.6 − 1.2°

  Full marks for the range 0.6–1.2° with a working method; the official solution gives a range, not a single value.

One method is to aim the telescope at an object, with easily recognizable markings (such as a building) and scroll through several ($n$) fields of view using only a single axis, while recording the difference between angles ($\Delta\alpha$) marked on the axis.
The final formula is:

Full Markings will be given for the range values of $FOV = 0.6 - 1.2^{\circ}$, but only if accompanied with a working method.