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Astrophotography and Sketching >> Film Astrophotography

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Nightfly
super member


Reged: 06/20/07
Posts: 199
Loc: Sullivan, Maine
Shooting Scorpius in the early morning.
      #2327354 - 04/14/08 08:12 PM Attachment (34 downloads)

I got up April 3rd and exposed from 3:00 to 3:30 AM. I used a Pentax 67 and 165mm f/2.8 lens stopped down to f/4. Exposed on E200 pushed +1 stop. This region is fairly low on my horizon and therefore hard to image, indeed just above the trees!

For a larger image try: http://nightfly.zoomshare.com/2.shtml/Pentax%2067%20Gallery

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Jim Cormier
Sullivan, Maine, USA
www.nightfly.zoomshare.com
Pentax 67 with 55, 105, 165, and 300mm lenses


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ZachK
professor emeritus


Reged: 08/21/05
Posts: 667
Loc: Israel
Re: Shooting Scorpius in the early morning. new [Re: Nightfly]
      #2327844 - 04/14/08 11:55 PM

Wow, just wow.

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Zach Kessin
Yesha Israel
Meade ETX 127 Mak-Cass
15x70 Celestron Skymaster Binoculars
Sinar F 4x5 view camera
Rolliflex Camera 80mm F2.8
Pentax K-1000 Camera 35,50 and 60--300mm zoom
3 kids, Large cat, small dog


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Hambone
sage
*****

Reged: 10/10/05
Posts: 442
Loc: Martin, TN
Re: Shooting Scorpius in the early morning. new [Re: ZachK]
      #2327881 - 04/15/08 12:20 AM

I like the way the dark nebula stands out in this one. Great shot!

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8" Sky View Pro
60MM Meade (used very little now)

Golden Pond Kentucky





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Nebhunter
Pooh-Bah


Reged: 10/04/03
Posts: 1010
Loc: Frostbite Falls
Re: Shooting Scorpius in the early morning. new [Re: Nightfly]
      #2328022 - 04/15/08 02:47 AM

I visited your gallery. What a great collection of images. I am paying attention to those exposure specs you listed. That 165mm lens really works well. Impressive at how wide they are. The E200 film is definitely the one.

I visited the photo store, and saw Fuji 100 print. Very fine grain. Wonder how this would work? Is the 100 too slow?

Fortunately a new member saw my Wanter add in buy & sell for a 67. He's considering selling it with 2 lenses. Hopefully we can make a deal.

Are you guiding those images? I'm thinking about getting a side by each setup from ADM for my EQ6. The 67 on one side, and my Equinox 80 on the other. I would manually guide thru the 80.

I see a 400 mm lens listed on Ebay. I would love to see this lens shoot an image like the Trifid or Eagle nebula. Maybe one day - soon I hope.

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Handle me with Care - The Traveling Wilburys.

TEC 140 "Katyusha" - Tec field flattener. Equinox 80 -
Atlas EQ6 SynScan GPS ADM conversion. ST-4 guider.

PENTAX 67 - 400 EDif - 300 - 200 - 135 - 90 lenses.
OM-1 300 Tamron - Konica 35-100 Varifocal STI Pro Stiletto.

http://nightfly.zoomshare.com/


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ClownFishModerator
Post Laureate
*****

Reged: 04/26/05
Posts: 5600
Loc: Islamabad, Pakistan
Re: Shooting Scorpius in the early morning. new [Re: Nebhunter]
      #2328042 - 04/15/08 03:23 AM

Nightfly, very nice work! I have always to play with a medium format camera. Good job!

Nebhunter: It's no much the film speed (ASA) that's a problem, it's how the film reacts to extended exposure and the sensitivity to specific wavelengths of light. For example, most films do a poor job at capturing the deep red Ha light of emmision nebula. Some do poor on the blues reflection nebula. And almost all films do a great job at capturing light pollution!

That's becuase films are designed for normal use around the home and outside in bright sunlight.

Kodak E200 is an exception, and it's chemical makeup is one that is very sensitive to Ha and keeps it's low-light sensitivity for a much longer time.

The problem with extended expsosures is that film has different response characteristics for each of the 3 or 4 color layers in the film. So while the yellow and blue layer may keep a strong sensitivity for 10 minutes, the red may loose some after 5 minutes. This starts to shift the overall color to green!

The higher the ASA rating, the worse the reciprocity failure. I believe after 20 mintutes of continuous exposure, Kodak E200 (ASA 200) will outperform and capture fainter nebula than any other commercial film regardless of ASA rating.

CF

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Learn all about POLAR ALIGNMENT with my Drift Method Tutorial and simulator!! Or visit my Foreign Service Blog!



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Nebhunter
Pooh-Bah


Reged: 10/04/03
Posts: 1010
Loc: Frostbite Falls
Re: Shooting Scorpius in the early morning. new [Re: ClownFish]
      #2329044 - 04/15/08 02:25 PM

Thanks CF for reminding me about that. I glad to see that Kodak still makes the E200 film for medium format. I hope to be using it soon.

--------------------
Handle me with Care - The Traveling Wilburys.

TEC 140 "Katyusha" - Tec field flattener. Equinox 80 -
Atlas EQ6 SynScan GPS ADM conversion. ST-4 guider.

PENTAX 67 - 400 EDif - 300 - 200 - 135 - 90 lenses.
OM-1 300 Tamron - Konica 35-100 Varifocal STI Pro Stiletto.

http://nightfly.zoomshare.com/


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s58y
Post Laureate


Reged: 12/12/04
Posts: 4861
Loc: Eastern NY
Re: Shooting Scorpius in the early morning. new [Re: Nebhunter]
      #2332460 - 04/16/08 09:50 PM

Great shot, all the more remarkable because it was done on film.

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Hutech 30D, SBIG ST-402 autoguider
SV80S, SV66 guidescope
AP900, G-11, Barndoor tracker

http://www.pbase.com/s58y


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Nightfly
super member


Reged: 06/20/07
Posts: 199
Loc: Sullivan, Maine
Re: Shooting Scorpius in the early morning. new [Re: s58y]
      #2336942 - 04/18/08 08:05 PM

All my piggyback work is manually guided. I use a 12mm reticle eyepiece. The telescope, drive corrector and other equipment is all early 1980's equipment. The Pentax camera is "new" to me, having been using it just over a year. What a great system. I find that the medium format adds new blood to film photography. The Antares region is a favorite of mine.

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