Re: [APML] IC1396 with Pentax 67 300mm EDIF F/4.0

[Ray Butler <ray.butler@nuigalway.ie>]

Hi Richard,

That's field rotation in the film shot, right? The stars are elongated 
off axis but not in the normal way you'd expect for lens aberrations.

The CCD shot is legendary!

Ray



Richard Crisp wrote:

> that's cool Wade
>
> I took a single film shot during the summer of 2004 using a Pentax 6x7 
> piggybacked on my scope with a 150mm Takkumar f/2.8 lens
>
> I exposed for 40 minutes using Fuji HG120 ISO 400
>
> http://www.narrowbandimaging.com/ic1396_film_page.htm
>
> it was eight year old film that had been freezer stored.
>
> There's a ton of nebulosity in that area and I want to shoot more of 
> it with CCD this year.
>
> here's a tricolor narrowband of IC1396 shot with CCD
>
> http://www.narrowbandimaging.com/ic1396_fsq6303_s2hao3_page.htm
>
>
> ----- Original Message ----- From: "Thomas W. Earle" <twade@bmi.net>
> To: <astro-photo@seds.org>
> Sent: Thursday, August 25, 2005 11:13 PM
> Subject: [APML] IC1396 with Pentax 67 300mm EDIF F/4.0
>
>
>> To all,
>>
>> Here's my first attempt at capturing this faint nebula.  I'm quite
>> surprised to see so much nebulosity in this region.  It's a close
>> second to Gamma-Cygnus region.  The exposure was 75 minutes long at
>> F/4.0.  The lab forgot to push the film 1-stop so the negative was a
>> little dark.  Fortunately, Tony Hallas is just amazing when it comes
>> to squeezing out every last detail in a slide, even if it's a little
>> challenging.  I quickly flat-fielded the image using DBE in
>> PixInsight LE so there may be some mistakes.  Let me know what you
>> think.
>>
>> http://tinyurl.com/e24g6
>>
>> Wade
>>
>>
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-- 
Dr. Ray Butler
Lecturer, Physics Department & Computational Astrophysics Laboratory,
National University of Ireland - Galway, 
University Road, Galway, Ireland. 
Web: www.nuigalway.ie/physics/ 	Email: ray.butler-AT-nuigalway.ie 
Tel: +353-91-493788 		FAX: +353-91-494584

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