ZWO's guide scope is compatible with all ASI cameras. 

It works well with the and the

The circumference of the scope is just over 14cm or close to 5.5", the will work fine here.

Parameters:

Lens Diameter: 30 mm

Focal Length: 120 mm

Weight (include guider ring and dovetail): 250 g

Back Focus: adjustable,（0~20 mm）

Focuser Type: front part focuser

Tube travel: 20 mm

Dovetail includes 1/4″ screw hole.

Specifications

Lens Diameter: 30 mm

Focal Length: 120 mm

Weight (include guider ring and dovetail): 250 g

Back Focus: adjustable,（0~20 mm）

Focuser Type: front part focuser

Tube travel: 20 mm

Dovetail includes 1/4″ screw hole.