For Swarovski ATS/STS series of 80mm spotting scopes.
Some available features for the accessory ring:
1. Attaching red dot sights for quickly finding objects, especially in low light conditions.
2. Attaching lasers for pointing out targets.
3. Attaching Cosine Indicators so a spotter can see the angle to the target.
4 . Attaching night vision for obvious reasons.
5. Attaching IR illuminators to identify and illuminate targets.
6. Attaching a rangefinder increase the accuracy when aiming the rangefinder.