![Laser Collimator Mk III - overview](https://astrophotography.pekdar.net/wp-content/uploads/2021/12/IMG_20211205_103544044-768x576.jpg)
External power supply – Laser Collimator MK III
The laser collimator is a very useful tool especially for amateur astronomers. My model ( Baader Laser Collimator Mark III ) works very well, but has one disadvantage, like any other type of this type. The weakest link in the whole construction is the SR battery model. Usually, the