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focal reducer for webcam

Started by moutinho, 07/17/2004 04:52PM
Posted 07/17/2004 04:52PM Opening Post
Hi,

Where do I get a 1.25" focal reducer to be used with a vesta webcam ? Is it possible to build it by myself ? How ?
Thanks,
Andre
Posted 07/17/2004 05:18PM #1
Here's an idea...

http://www.greg.beeke.btinternet.co.uk/accessories.htm
http://www.astrosurf.com/benschop/Barlows_and_FocalReducers.htm

Posted 07/17/2004 05:52PM #2
Andre,

You can get such a focal reducer here also, it is a standard 1.25" screw and will screw onto any thing that a standard filter will screw onto. I have not tried them as yet, but they look ok on the web page.

http://webcaddy.com.au/astro/adapter.htm

Clear skies!
Paul Maxson

(this is the link from his main page)
http://webcaddy.com.au/astro/F-066FR-pics.htm

Paul Maxson
Moderator - CCD Imaging and Processing/Solar System
Celestron C14, Mewlon 250, Orion EON120, ASI120MM, Flea3.
http://www.sunspot51.com
Posted 07/17/2004 06:04PM #3
Orion sells a focal reducer for their Video Cameras, its about $15 or so, pretty cheap but then given the small size of the chip on any of these cameras, it does not have to be much.

jon
Posted 07/18/2004 04:22PM | Edited 07/18/2004 04:23PM #4
Andre,

As recommended in another reply, I would recommend the focal reducer from Steven Mogg.

http://webcaddy.com.au/astro/adapter.htm

I got his Vesta Pro Webcam adapter (a threaded adapter to replace the one I made out of a film canister) and his 0.66 field flattener for the Venus transit. I have a Meade ETX 90EC and I really needed to reduce the focal length for the transit. You can check out the pictures on my website to see how it performed on my f/13.8 telescope:

http://home.earthlink.net/~steveswebuniverse/venuspictures.htm

I was very impressed by the quality of the items when I received them the day before the transit (nothing like waiting to the last minute). Steven was great to work with and responded to all of my email questions.

I hope this helps in your quest for a focal reducer.

Clear skies,
Steve Murphy
Raleigh, NC
http://home.earthlink.net/~steveswebuniverse