[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]
Re: [APML] Convex security mirror + aurora
Robert Reeves has all this info in his book on widefield AP.
Stuart
----- Original Message -----
From: "Brian larmay" <power_windows4789@yahoo.com>
To: "APML" <astro-photo@seds.org>
Sent: Friday, May 20, 2005 7:00 PM
Subject: [APML] Convex security mirror + aurora
> Hi all,
>
> Since the aurora, My interest in convex seurity
> mirrors has rekindled, and am wondering if anyone here
> has experiance with exposure times against one of
> these.
>
> Would focusing on the mirror make my exposures
> somewhat longer?
>
> Ill more then likely be using a 50mm f 1.8 lens
>
> Ill be purchasing a 160 degree 18" mirror.
>
> Brian
>
> Thanks for any info...will respond after the weekend.
>
>
>
> __________________________________
> Yahoo! Mail Mobile
> Take Yahoo! Mail with you! Check email on your mobile phone.
> http://mobile.yahoo.com/learn/mail
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
> http://seds.org/mailman/listinfo/astro-photo
>
_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo