Review Date: 10/20/2009 Reviewed By: Keir Bad Choice I had the same issue as the reviewer Keir. I bought one of these about 2 years ago, used it just a few times and then the laser started to fade. I also replace the batteries, but iwas not that. I would choose a different product.
I bought one of these about 2 years ago as I liked the write up and the construction of the unit. I have used it - say - a dozen times, and the laser suddenly started to fade after being on for a minute or so. Thinking it batteries, I replaced them and again a fading output. I contacted the manufacturer who stated that it is probably a diode that needs replacing. I would have liked a product that lasted more than a dozen times before failing. I would choose another product if given the choice.
I have two reflector telescopes and have been using the old fashioned way of collimating for the past few years. Since I travel quite a bit with my telescopes it was time consuming to re-collimate each time I set up for a viewing session. Now with Baader's Laser Colli it takes less than a minute to double check the alignment of my scopes and bring in amazing views of Saturn, Mars, Nebulae, and Lunar features! This gadget is well worth the money! Thanks Baader!
I bought an Astromaster 114 EQ. Could not get Mars to resolve to a disk. After trying several other products, I bought the Laser Colli. In less than 5 minutes I had the telescope properly collimated and that night resolved Mars to a disk. Easy to use, just be sure to center mark the primary mirror if it isn't already and follow the instructions. Great product and worth every penny I paid for it. The folks at OPTCorp were very nelpful also.