Adverb
In a telescopical manner; by or with the telescope.
Source: Webster's dictionaryeach of the four legs contains a simple screw jack with a thrust bearing that is operated telescopically inside of two tubes Source: Internet
The main undercarriage units swing towards each other to be stowed but due to their great height also need to retract telescopically before swinging to clear each other when stowed. Source: Internet
Thus it is only the inability to telescopically observe or detect orbital motion in the visual double stars that differentiates these two groups. Source: Internet