Guider scope with optic diamter: 60 mm, focal length: 280 mm, weight (include guider ring and dovetail): 640 g, back focus: 15 mm, focuser type: rotate focuser, tube travel: 30 mmm, dovetail: include 5 1/4″ screw. Some test images shows very good optical quality! This guider scopes is compatibile with all ASI cameras.
iPolarTM electronic polar scope additional adapter. This adapter only fit an iPolar camera with USB port on the side (#3339). It does not work with a SkyGuider Pro polar scope (#3339R) or an internal polar scope (#3339A)
The Askar SQA85 is a premium quality quintuplet air-spaced SD glass Petzval Astrograph that can do something that is often claimed but rarely achieved: produce pinpoint stars to the corners on a full frame sensor.
The ZWO ADC actually does work well. It takes a bit of practice and some searches through the internet on how to use, but if planets are low in the sky the ADC will provide a better image.