2 replies to this topic

[John Higbee]

Does anyone have an optical diagram for the C14 Orange Tube 10X40 finder?  I think I may have assembled it incorrectly after cleaning...

 

I suspect the lens at the bottom of the eyepiece is the culprit (this is the first lens you see in the eyepiece, after disconnecting the eyepiece from the finder tube).

 

Any help would be gratefully appreciated!  Thanks, John

[RichA]

Does anyone have an optical diagram for the C14 Orange Tube 10X40 finder?  I think I may have assembled it incorrectly after cleaning...

 

I suspect the lens at the bottom of the eyepiece is the culprit (this is the first lens you see in the eyepiece, after disconnecting the eyepiece from the finder tube).

 

Any help would be gratefully appreciated!  Thanks, John

The eyepiece is a Kellner so the bottom lens should have the flat face facing outward.

[deSitter]

The eyepiece is a Kellner so the bottom lens should have the flat face facing outward.

 

Yes, toward the eye. It's an achromat. The other lens (field lens) has the flatter side toward the sky.

 

-drl