From: ScopeTrader.com (rharris_at_antispamdomain.not)
Date: Sun Nov 30 2003 - 18:08:58 EST
Thanks Doc.
--------------------------------------------------------------------------------
Richard HarrisScopeTrader.comnotify_.at._ScopeTrader.com
----- Original Message -----
From: R. A. Greiner
To: digital_astro_.at._yahoogroups.com
Sent: Sunday, November 30, 2003 3:53 PM
Subject: Re: [digital_astro] Celestron 500mm mirror lens
It is probably f 8. I have a similar Canon version of this CAT lens. Many companies marketed an f8 500 mm years ago.
Doc G
----- Original Message -----
From: ScopeTrader.com
To: digital_astro_.at._yahoogroups.com
Sent: Sunday, November 30, 2003 2:32 PM
Subject: [digital_astro] Celestron 500mm mirror lens
Hey guys, I've asked this before a few months ago and I'm still trying to find out the answer.
Has anyone ever seen one of these?
http://scopetrader.com/Messageboard/Files/Snap002.jpg
It's about 76mm wide, 500mm FL and gives pretty nice images.
I just can't figure out the F/ratio and was wondering if any of you had ever seen one..
--------------------------------------------------------------------------------
Richard HarrisScopeTrader.comnotify_.at._ScopeTrader.com
[Non-text portions of this message have been removed]
Yahoo! Groups Sponsor
Before posting an image to our group please read the space mangement guidelines:
http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%20Space%20Management%20Guidelines
Please check the digital_astro FAQ at:
http://www.szykman.com/Astro/AstroDigiCamFAQ.html
Be sure to visit the digital_astro Gallery and Archive at:
http://velatron.com/dca/gallery
http://velatron.com/dca/archive
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
Yahoo! Groups Sponsor
ADVERTISEMENT
Before posting an image to our group please read the space mangement guidelines:
http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%20Space%20Management%20Guidelines
Please check the digital_astro FAQ at:
http://www.szykman.com/Astro/AstroDigiCamFAQ.html
Be sure to visit the digital_astro Gallery and Archive at:
http://velatron.com/dca/gallery
http://velatron.com/dca/archive
Your use of Yahoo! Groups is subject to the Yahoo! Terms of Service.
[Non-text portions of this message have been removed]
------------------------ Yahoo! Groups Sponsor ---------------------~-->
Buy Ink Cartridges or Refill Kits for your HP, Epson, Canon or Lexmark
Printer at MyInks.com. Free s/h on orders $50 or more to the US & Canada.
http://www.c1tracking.com/l.asp?cid=5511
http://us.click.yahoo.com/mOAaAA/3exGAA/qnsNAA/N_XolB/TM
---------------------------------------------------------------------~->
Before posting an image to our group please read the space mangement guidelines:
http://groups.yahoo.com/group/digital_astro/files/Photos%20Section%20Space%20Management%20Guidelines
Please check the digital_astro FAQ at:
http://www.szykman.com/Astro/AstroDigiCamFAQ.html
Be sure to visit the digital_astro Gallery and Archive at:
http://velatron.com/dca/gallery
http://velatron.com/dca/archive
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
This archive was generated by hypermail 2.1.7 : Sun Nov 30 2003 - 18:14:45 EST
