Guide vane wheel of a turbomachine

A guide vane wheel of a turbomachine, comprising:

• a plurality of guide vanes which form a vane rower and are configured to extend radially inward in a flow path of the turbomachine, and
• two borescope accesses, each formed between two of the vanes,
• the plurality of guide vanes forming two segments, each with a plurality of the guide vanes, which are spaced apart from one another in a circumferential direction,
• the two segments having a same constant cascade pitch,
• the two segments being spaced apart such that a respective outermost one of the guide vanes of one of the two segments adjoining the other of the two segments is at an increased distance from an adjacent one of the guide vanes of the other of the two segments in the circumferential direction which is equal to 1.3 to 1.7 times the cascade pitch, the sum of the increased distances being equal to 3 times the cascade pitch,
• the increased distance between the respective two adjacent outermost guide vanes of the two segments each providing an enlarged vane passage between two adjacent outermost guide vanes, and the two borescope accesses being formed respectively in areas of the enlarged vane passages.