brother unable to see through telescope
Posted 07 December 2012 - 08:15 AM
he is expanning that the view is not that sharp. he is saying that the view is just like that i have put down my spectacle.
so i would like to ask you all that can it be due to his high spectacle power?
if so then is their any other way to correct it using telescope eyepieces?
Thanks in advance
Posted 07 December 2012 - 08:19 AM
Posted 07 December 2012 - 10:31 AM
Posted 07 December 2012 - 06:28 PM
Your brother will likely need to extend the focuser further out than you.I wear a strong prescription and this is what must be done to bring objects into focus;some telescopes even require a small focuser tube extension in my case because there is not enough adjustment.
If he keeps his glasses on he will likely have great difficulty with all but the largest eyepieces because his glasses will severely restrict his field of view through the eyepiece.
Try focusing on something while using at least a 25 or 26 mm eyepiece and have your brother look with glasses on.Then have him look without glasses and adjust the focuser until he can see clearly.
Posted 08 December 2012 - 12:41 AM
POWER OF SPECTACLE:
Posted 08 December 2012 - 10:40 AM
Posted 08 December 2012 - 10:54 AM
Posted 08 December 2012 - 11:13 AM
If none of the above suggestions work, he may have problems with low light. Could he have cataracts? There simply may not be enough light through the eyepiece for starlight vision. Have him try to see the moon through the telescope, get good focus for him, and then see if he can see starlight.
Binoculars with long eye relief are wonderful for people with glasses to observe the night sky. Many people don't even consider them for astronomy.
Posted 09 December 2012 - 01:52 AM
thanks once once again.