Baader Planetarium Mark III 雷射準直儀 - LASER

Finally, a collimator that actually holds its alignment out of the box—the etched viewing plate makes centering the dot so much quicker than squinting through a tiny peephole. My telescope's secondary mirror was off by a hair and this fixed it in under a minute.

I love being able to see the etched viewing plate through the back while adjusting the secondary mirror—it makes centering the laser spot so much more intuitive.

The laser spot is perfectly centered and the battery compartment feels much more secure than on my old collimator. It took me less than a minute to dial in my secondary mirror with this tool.