How to focus a wobbly telescope

Many telescopes vibrate too much to focus but only if you're touching the focus knob. This video has solutions.


The Bahtinov mask on Wikipedia
en.wikipedia.org/wiki/Bahtinov_mask

You can make your own
deepskywatch.com/Articles/make-bahtinov-mask.ht…
skyatnightmagazine.com/bahtinov-mask


Places where you can buy one:

telescopes.com/telescope-accessories/photograph…
adorama.com/searchsite/default.aspx?searchinfo=…
amazon.com/s/url=search-alias%3Delectronics&…
spike-a.com/

Motorized focus
jmitelescopes.com/buy_motofocus.htm


The telescope shown in this video is the Celestron NexStar 5SE. It was used to make the video of Jupiter. The Celestron NexImage 5 was used in 640x480 mode.

The eyepiece is an X-Cel LX eyepiece from Celestron.

X-Cel LX Series eyepieces
celestron.com/c3/category.php?CatID=105

The "finder scope" is actually a green laser I bought from Orion
telescope.com/catalog/search.cmd?form_state=sea…

The scope is equipped with "Bob's Knobs" for easy collimation without using any tools
bobsknobs.com/


The Teaching Company has many great courses on DVD related to astronomy

Our Night Sky
thegreatcourses.com/tgc/courses/course_detail.a…

Understanding the Universe: An Introduction to Astronomy, 2nd Edition
thegreatcourses.com/tgc/courses/course_detail.a…

Many more
thegreatcourses.com/tgc/search/search.aspx?sear…