From: Mark Gaffney <markgaffney@me.com>

Date: July 15, 2010 12:12:01 PM MDT

To: Astro_IIDC@yahoogroups.com

Subject: Re: [Astro_IIDC] Impromptu ccd shootout

Milton, 

I started doing a PTC (photon transfer curve) for the Nikon with Richard Crisp recently but I think Richard may have taken insult from Mike at ImagesPlus (who said there was little appreciable visual difference with Richard`s 15 flats at 80% full well prescription) & promptly removed his input from that group. 

Whilst I can probably contact Richard privately I`m a bit reluctant  to & have had quite a fill of daytime tests for now...!

I may try your idea eventually though..

M 42 may be a while because my new site dosen`t have as clear a view of the east as before..

Plenty of other things I can try..

Mark.

On 16/07/2010, at 2:55 AM, Milton Aupperle wrote:

Mark;

I do my benchmarks in doors, so I don't have to wait for stars or
darkness.

TTYL..

Milton Aupperle

On 15-Jul-10, at 10:31 AM, Mark Gaffney wrote:

>
>
> Milton, It might be best to wait until I have guiding set-up. I
> noticed yesterday that Orion is rising here again at about 5 am in
> the morning so I may catch sight of M42 again eventually. My
> Scorpion is 4.4 um I believe..
>
> Mark.
>
> Sent from my iPod