Re: [APML] flat-field-camera images

["bert katzung" <katzung1@home.com>]

Hi Maurice:
Welcome to the APML! Your telescope sounds quite interesting and your images
are very impressive. If I understand your text correctly, all the images are
hand-guided? That's impressive too, and I can well understand why you are
limiting them to 15 minutes. With that fast f3.5 instrument it may not seem
that you need much more, but with things like the North America Nebula, a
little more exposure might help. I noticed that in your M31 image the core
was burned out a bit. I wonder if selective adjustments of the spiral arms
with the core protected by a mask might give you a better balance of arms
versus core?
In any case, you have a great start with your new scope!
Bert

Bert Katzung
"When it was first said that the sun stood still
and the world turned round, the common sense
of mankind declared the doctrine false; but the
old saying of Vox populi, vox Dei, as every philosopher
knows, cannot be trusted in science." CHARLES DARWIN
www.astronomy-images.com

----- Original Message -----
From: "Maurice Toet" <mftoet@hetnet.nl>
To: "APML" <astro-photo@seds.org>
Sent: Saturday, 27 October, 2001 2:22 PM
Subject: [APML] flat-field-camera images


> Hello all,
>
> Because I am new to the list, a short introduction will follow first:
> My name is Maurice Toet, I am 20 years old and live in the Netherlands
> (Europe). Because my Native language is Dutch, my English may sound a
> little weird. Sorry for that. The Netherlands are/is (?) a very crowded
> country and I have to deal with a lot of light pollution. I live in one
> of the biggest cities of the country, The Hague, and have to drive about
> an hour to reach my observing site with a limiting magnitude between 5.5
> and 6. Since recently I own a Lichtenknecker Optics (Belgium-made)
> flat-field-camera (FFC) which is a modified Schmidt-Cassegrain designed
> for astrophotography. The focal length is 500 mm and the f-ratio 3.5. A
> 35-mm SLR camera can be placed behind the instrument (I use an OM-1).
> There are larger versions of the instrument available which are also
> suited for medium format camera's. My tracking platform is a Losmandy
> GM-8 mount and for visual application I use an Intes MK-67 Mak-Cass.
>
> On the 12th of October I shot my first images with the FFC. The results
> can be found on my website. I am looking forward to share tips and
> information with you all and admire your photographic work.
>
> NGC 7000 http://www.amateur-sterrenkunde.nl/ffc_n7000.htm
> M31 http://www.amateur-sterrenkunde.nl/ffc_m31.htm
> Double Cluster http://www.amateur-sterrenkunde.nl/ffc_douclu.htm
> M45 http://www.amateur-sterrenkunde.nl/ffc_m45.htm
>
> Sorry, the information is only in Dutch. Though I think you'll
> understand the data underneath the images.
>
> I would like to thank my friend Robbert Koornwinder for getting me into
> astrophotography. His website can be found at
> http://www.igr.nl/users/rob.k
>
>
> Kind regards,
>
> --
> Maurice Toet
> N 52º05'; E 4º18'
>
> http://www.amateur-sterrenkunde.nl
>
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