[APML] Re: The faintest object

["Renzo Del Rosso" <scrivimi@renzodelrosso.com>]

Chuck Vaughn Scrive: 

> Renzo, 
> 
> I performed a test many years ago with a C14 at f7 and it reached mag 20.2 
> stars on TP in one hour. I believe the deepest is around mag 21 on TP with 
> scopes in the 12 - 14" range.
Well, Chuck.
I reached a 18m in a single shot on M31 last years, using my 8" Vixen R200SS 
F:4 and the Kodak E200 film pushed +1.
I exposed for 40 minutes.
I want to try with the TP 2415 Hyper under the same sky this winter. I think 
to reach 18.5 with 40/45 minutes, no more, cause the small diameter of my 
scope.
My deepest photo is visible at
http://www.renzodelrosso.com/profondocielo/foto/ammassi/m31.jpg
It's clipped but I want to show the higher number of extragalactic cluster I 
can.
Thanks for your reply.
Renzo 

www.renzodelrosso.com
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