collimating telescope..

im new to this, but my primary mirror is centered in the secondary mirror,,
but then the focuser is not centered in secondary mirror, and i find the
images poor. i have a celestron 12 inch dobs.. any suggestions..


thanks steve

Hi Steve,

Try http://skyandtelescope.com/howto/sco...icle_787_1.asp

Afterwards you might enjoy
http://web.telia.com/~u41105032/kolli/kolli.html

Clear Skies

Chuck Taylor
Do you observe the moon?
Try http://groups.yahoo.com/group/lunar-observing/

Are you interested in understanding optics?
Try http://groups.yahoo.com/group/ATM_Optics_Software/

************************************

"steve" wrote in message
news:RPCCd.694240$nl.320837@pd7tw3no...
im new to this, but my primary mirror is centered in the secondary
mirror,,
but then the focuser is not centered in secondary mirror, and i find the
images poor. i have a celestron 12 inch dobs.. any suggestions..


thanks steve