RE: [ATM] flexing

["Thomas" <tomjan@ozemail.com.au>]

Hi Guido,

Do you have a focal length in mind yet? Judging by your comment re
planets and fainter objects you would do well to aim for a mid range F
ratio such as F/5 to F/6. I have to say at this point that I don't have
much experience with flexed mirrors so this should only be taken as a
general comment. 

What I do know is the deeper the curve, lower F number, the more pull is
required. I would aim for the f/6ish mirror as this should be easier to
pull. I could be wrong here so if anyone knows this topic better than I
could you wiegh in now, please, Bill Kelly what would you say?

Clear skies,
Thomas Janstrom
http://www.tjanstrom.com
http://www.norsewines.com.au
"Your nobody untill you've been ignored by your seventh cranio-facial
nerve."


-----Original Message-----
From: guido gaethofs [mailto:guido.gaethofs@pandora.be] 
Sent: Monday, 3 May 2004 6:28 PM
To: Thomas
Subject: Re: [ATM] flexing


hi thomas
i want to look at all planets and galaxies.
greetings guido
----- Original Message ----- 
From: "Thomas" <tomjan@ozemail.com.au>
To: "'guido gaethofs'" <guido.gaethofs@pandora.be>; <atm@atmlist.net>
Sent: Monday, May 03, 2004 10:46 AM
Subject: RE: [ATM] flexing


> Yes, but more importantly what are your aims for this scope, what do 
> you intend to look at, planets or faint fuzzies?
> 
> Clear skies,
> Thomas Janstrom
> http://www.tjanstrom.com
> http://www.norsewines.com.au
> "Your nobody untill you've been ignored by your seventh cranio-facial 
> nerve."
> 
> 
> -----Original Message-----
> From: atm-bounces@atmlist.net [mailto:atm-bounces@atmlist.net] On 
> Behalf Of guido gaethofs
> Sent: Sunday, 2 May 2004 4:47 PM
> To: atm@atmlist.net
> Subject: [ATM] flexing
> 
> 
> hi all
> is it posible to flexing a 20" mirror.
> greetings guido _______________________________________________
> ATM mailing list http://www.atmlist.net/
> 
> 
> 
> 


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