#1  
Old 15-02-2009, 05:05 PM
Eris
Registered User

Eris is offline
 
Join Date: Mar 2007
Location: Mount Barker SA
Posts: 70
Using a C11 at F3.3 with an ST2000

Hi everyone,

Can anyone tell me how the bad the vignetting would be when using a C11 with a Meade f3.3 focal reducer and a SBIG ST2000? I hear it's ok with a DSI but what about the ST2000?

Thanks,

Eris
Reply With Quote
  #2  
Old 20-02-2009, 07:24 PM
AlexN's Avatar
AlexN
Tunnel Vision

AlexN is offline
 
Join Date: Mar 2008
Location: Brisbane, Australia
Posts: 6,708
I dare say it would be pretty bad Eris, I get a fair bit of vignetting on a DSLR sized sensor with the C11 @ F/6.3, the ST2000 (from memory) is the same height as the DSLR sensor, but not as wide, because its a square sensor... I think its a sure bet that the ST2K will vignette pretty seriously at 3.3..

Alex.
Reply With Quote
Reply

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 02:08 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
Bintel
Advertisement
OzScopes Authorised Dealer
Advertisement
Lunatico Astronomical
Advertisement
Celestron Australia
Advertisement
NexDome Observatories
Advertisement
Meade Australia
Advertisement
SkyWatcher Australia
Advertisement
Astronomy and Electronics Centre
Advertisement