Quote:
Originally Posted by koputai
It could be that your scope is not reaching focus. My 8 inch Dob (a GSO/Bintel) will not reach focus with most eyepieces.
Cheers,
Jason.
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That is bad!
Either get someone to adjust your mirror location (closer or further) or take it back to Bintel and get them to do it.
Sometimes the Primary or secondary mirror has been adjusted too far up or down the tube. Really bad if its the secondary as it puts it out of alignment with the focuser too.
It all needs adjusting.
The only scopes that shouldn't reach focus with an Eyepiece are dedicated Astrographs.
ALL other scopes should focus.