Re: [APML] North American Nebula (or dodging aurora)

["Kevin Wigell" <kwemail@twcny.rr.com>]

Robert Reeves wrote:
> Yes, that is a nice image with a 200 mm lens. Definitely one of my
favorite
> objects.
>
> I have three comments... I think it is a tick too much magenta, but that
is
> personal taste and choice (residual aurorae?).  And second, I am puzzeled
as
> to why you shot at f/8.  Granted, the STV makes it no problem to expose
for
> two hours on two negatives, but the Zuiko should do just fine being close
no
> more than one stop, if that much.  f/8 seems like overkill on the stopping
> down.
>
> And lastly... a pet peeve.  A lot of people call NGC 7000 the "North
> American Nebula".  It is the North America Nebula.  We on this continent
do
> not own the nebula <G>.
>
> Good shot.  Keep doing what you are doing.
>
> Robert Reeves                      reeves10@swbell.net
> 520 Rittiman Rd.                   www.robertreeves.com
> San Antonio, Texas 78209    210-828-9036
> USA                                     29.484  98.440  200 meters

Robert:
1.    Yes, personal preference. I used the colors for this image as they
came out of the scanner with no adjustments. I may tweak them in the future,
given time.
2.    I just got this 200mm lens last week. First thing I did with it was
some test exposures from wide open to f/16. I got better star images at f/8
than at f/5.6, although there wasn't a whole lot of difference. I'll
probably play with images at both settings until I decide which f-stop I'm
happiest with. Yes, I can certainly stay with f/8 and expose longer, but at
the expense of less time for more images and perhaps more reciprocity
failure as well. So I may well end up at f/5.6 as you suggest, even if the
star images are not quite as sharp.
3.    Oops (he said red-faced). I've fixed the name of the nebula on my web
site.

Thanks for the comments and encouragement. I feel I'm still a newbie, but
I've finally gotten over the hump where I'm now starting to turn out a few
decent images now and then.

Kevin Wigell
http://home.twncy.rr.com/kevinwigell/index.html



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