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Astrophotography and Sketching >> Film Astrophotography

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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
First Try North America Nebula Widefield
      #6019712 - 08/11/13 08:59 PM Attachment (51 downloads)

I've been trying to get a shot of NGC 7000 for a while, and I finally got some good shots at Stellafane last night on hypered tech pan. I developed them this morning when I got home (10 minutes in D-19, as usual). If I recall correctly, the first exposure was around 20 minutes. The second was definitely 30 minutes. Both were taken with my 100mm lens at f2.8 piggybacked on my telescope. I used a Lumicon h-alpha pass filter for both shots (mostly to increase contrast; there wasn't much light pollution to filter out!). Also in the field are the Pelican Nebula, the Gamma Cygni region, some other nebulae, a meteor, and an airplane. I also have some color shots from Stellafane, but I don't currently have the equipment to process color film, so I will take the roll to Color Services down the street for processing and printing.

Clear Skies,
Noah


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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
Re: First Try North America Nebula Widefield new [Re: AstroMan0]
      #6019715 - 08/11/13 09:01 PM Attachment (29 downloads)

Here is the second one:

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THEPLOUGH
ELEVEN Grandchildren; FIVE Ducklings
*****

Reged: 01/11/08

Loc: Carlisle, Cumbria, ENGLAND
Re: First Try North America Nebula Widefield new [Re: AstroMan0]
      #6020260 - 08/12/13 06:38 AM

Great shots Noah... ... What are those lines at the bottom of #2...

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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
Re: First Try North America Nebula Widefield new [Re: THEPLOUGH]
      #6020284 - 08/12/13 07:27 AM

Thanks!
I assume that the lines were the result of a passing airplane; I cannot think of what else could have caused them.

Noah


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THEPLOUGH
ELEVEN Grandchildren; FIVE Ducklings
*****

Reged: 01/11/08

Loc: Carlisle, Cumbria, ENGLAND
Re: First Try North America Nebula Widefield new [Re: AstroMan0]
      #6021429 - 08/12/13 07:03 PM



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Nebhunter
Carpal Tunnel


Reged: 10/04/03

Loc: Frostbite Falls
Re: First Try North America Nebula Widefield new [Re: AstroMan0]
      #6032985 - 08/18/13 02:31 PM

Definitely a jet - lights are blinking on/off. Nice work here. A lot of detail. Is there a larger version? I like to compare details between hypered BW and colour films.

igor


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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
Re: First Try North America Nebula Widefield new [Re: Nebhunter]
      #6033514 - 08/18/13 08:01 PM

Thanks Igor!
Yes, there is a larger version-a much larger version. Even zoomed in all the way, I can't see the film grain- I run into scanner noise instead (I think). I did a 12800 dpi scan, and the files are 22.1 mb, I believe. I don't have a website to post the photos on; is there any way I could send them to you?


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Nebhunter
Carpal Tunnel


Reged: 10/04/03

Loc: Frostbite Falls
Re: First Try North America Nebula Widefield new [Re: AstroMan0]
      #6034591 - 08/19/13 01:29 PM

PM sent

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Michal1
sage


Reged: 07/25/10

Loc: Czech Republic, Central Europe
Re: First Try North America Nebula Widefield new [Re: Nebhunter]
      #6037028 - 08/20/13 06:03 PM

Noah, I'm also interested in seeing the photos in a higher resolution. To upload the images, you can use services like imageshack, dropbox, or create your own gallery, e.g., on flickr.

I recommend not to scan at such hight resolution. I'm sure the 12800 DPI is achieved only by digital resizement made inside the scanner. The scanner can't see such small details on the film similarly as we can't see atoms by our eyes. Even the high-end dedicted film scanner Nikon 9000 ED has the maximal true resolution of 4000 DPI. The digital interpolation brings nothing more than bigger files, which are difficult to manipulate with.


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AstroMan0
member


Reged: 06/19/12

Loc: Dedham, Massachusetts
Re: First Try North America Nebula Widefield new [Re: Michal1]
      #6043230 - 08/24/13 09:32 AM

Hi Michal,
I uploaded them to Flickr, and resized them down to about 3 mb. You can see them at the links below:
http://www.flickr.com/photos/28172555@N02/9583553532/sizes/o/in/photostream/
http://www.flickr.com/photos/28172555@N02/9583546398/sizes/o/in/photostream/


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