what are black spots on the mirror of my telescope?
i have bought it just 1 month ago they were just 2 spots but now they are going more.what are they?
Asked By: celestialviews(champion) - 1/2/2009
Best Answer - Chosen by Asker
Depends. If you have an open bottom on your OTA (optical telescope assembly, which is the tube, mirrors, mirror mounts, finder and eyepiece holder) shine a light through the back end of the mirror. But don't disassemble the OTA to get to the mirror unless you know what you're doing. You can throw the optics out of... More
Answered By: Scotty - 1/2/2009
Additional Answers (3)
I've had many reflectors over a 50-year period, but I've never seen black spots on any of my mirrors. Ordinary dust, yes, but it sounds from your description like these are in the coating. Do you live close to salt water? These might be spots of corrosion from droplets of salt water. I'd return it to the store where... More
Answered By: Geoff G - 1/2/2009
Probably just carp(sp) form the atmosphere. You can have an awful lot on a mirror before cleaning is necessary. Don't obsess about them, just minimize the formation by capping the tube and putting something in the eyepiece holder (traditionally a 35mm film canister) at the end of each observing session.
Answered By: Blackshuck - 1/2/2009
Sorry, but I don't think anyone will be able to answer your question without a few more details, like... More
Answered By: Larry454 - 1/2/2009
in a consulting firm Learn more today!
Over 483 Local Jobs Now Hiring In Your Area. $18-$87/Hr - Apply Today!
Open Interviews August 1st & 2nd. Hiring to Fill Immediate Openings!
Over 471 Local Jobs Available. Hiring Now – Apply Today!
Other Career Questions
What jobs are there in the business field that are night jobs? Places and job titles please. Im have a BA in Business Admin and looking for a night job, already have a morning/day job.
Enumerate these jobs Say, patent application writting. patent application writing. In a company, what jobs are needed to keep confidential?
Content is not owned or controlled by Monster. Any content concerns should be addressed with Yahoo!
Yahoo! Does not evaluate or guarantee the accuracy of any Yahoo! Answers content. Yahoo! Disclaimer.
Best-Paying Work-from-Home Jobs
It’s easier than ever to work from home. Of course, not every job is a mobile job, and some companies aren’t interested in having their employees work from home.
2013 Marketing Jobs Outlook
The US may be facing another year of anemic hiring overall, but that won't be the case in the high-orbit world of multichannel, digital media marketing.
2013 Engineering Jobs Outlook
Engineers will find job opportunities in select disciplines in 2013, with candidates who are all-around, client-oriented businesspeople in demand.
Best-Paying Jobs by Major
What could you earn with a particular four-year degree? Find out by checking out this list of the top-paying jobs for 20 of the most common majors.
Eight High-Paying, Secure Jobs
Want to earn a good salary and enjoy a measure of job security as well? Check out these well-paying jobs on tap for fast growth in the coming years.