Re: [APML] Finally, Got A Half Decent Picture

["Marco Lorenzi" <lorenzi70@tiscali.it>]

Hi Eddie, nice shot. Pay attention to the curves of the 5min image, instead
of white the highlights are grey, you should select the core of Orion and
than set it to read where "pure white" (burned core of stars) 255 level per
channel instead of <200...
Marco

----- Original Message -----
From: "Eddie Guscott" <eddie.guscott@blueyonder.co.uk>
To: "APML" <astro-photo@seds.org>
Sent: Tuesday, February 17, 2004 7:21 PM
Subject: [APML] Finally, Got A Half Decent Picture


> Hi All
>
> Well after trying for nearly 2 years I finally got a half decent prime
focus
> pic on film. I've done OK'ish with wide field but this particular night I
> think it all worked.
> I'll let you be the judge - it's an M42 (yawn!) taken with an OM1 on a TMB
> 5" F6 refractor, guided with an ST4 on a 80mm F6 guidescope.
> Exposure was 50 mins on Provia 400F with a separate 5 mins exposure for
the
> trapezium region.
>
> I'm not sure if I've processed it the best way but this is the version I
> ended up being happy with.
>
> I would appreciate any comments or criticisms (tracking was just very
> slightly off but not objectionable for me) .
>
> There is a strange artefact around the bright star lower right of centre
> that has got me puzzled. At the moment I've got it narrowed down to a
spider
> web inside the extension tube I used to achieve focus. Has anyone seen
> anything like this before??
>
> http://www.astropics.co.uk/m42.htm
>
> Thank you for looking
>
> Eddie Guscott
>
>
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