Click here if you are having trouble logging into the forums
Privacy Policy |
Please read our Terms
of Service | Signup and
Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User
Scanning4Comets
Markus
Reged: 12/26/04
Loc: Hamilton, Ontario, Canada
|
Re: bang-for-buck coma correction in f/5 Newtonian
[Re: Jim Romanski]
#5569753 - 12/13/12 07:00 PM
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Quote:
In practice, the coma corrector will require some in-travel of the focuser to put it in the right place in the optical path.
Is this the case with most eyepieces in a Paracorr? If so, that would fit the bill for me because my focuser drawtube is almost ALL OF THE WAY OUT for all of my eyepieces!
|
Starman1
Vendor (EyepiecesEtc.com)
Reged: 06/24/03
Loc: Los Angeles
|
Re: bang-for-buck coma correction in f/5 Newtonian
[Re: Scanning4Comets]
#5569837 - 12/13/12 07:56 PM
|
|
Edit
|
Reply
|
Quote |
Quick Reply
|
|
|
Wherever the Paracorr comes to focus, and it's usually about 1/2" in, all your eyepieces will focus there because differential focuser position is taken up by adjusting the tunable top.
The Paracorr, in a way, parfocalizes your eyepieces.
|
|
31 registered and 29 anonymous users are browsing this forum.
Moderator: ausastronomer, Scott in NC, iceblaze
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 970
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
