I have a 4-year old 10-30 IS that is just about miraculous for terrestrial objects, but which displays much diffrent images of stars left and right, making them not-so-useful for night work.

I recently read a post that described near perfect performance from a 10-30 IS, and this has me wondering if one side of my unit is mis-collimated.

Can these binoculars be collimated in the field, or is this a factory return? Second question, will customer service even know what I am complaining about since this is essentially a horse-race viewing unit, and is not sold or advertised for astronomical use?

If this coma is just the nature of the beast, then I will quit worrying about it. But, if I can get pinpoint stars, I want them. IS is the difference between bliss and blasphemy.

Thanks for any thoughts or experiences.

Kim J.