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Thread: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

  1. #41
    Vaughn's Avatar
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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Quote Originally Posted by Jac@stafford.net View Post
    Very good! I must look you up when I visit family in Arcata, should it ever happen.
    Look up the Staffords. Good people.
    .
    I live just 5 miles up the river from Arcata -- we have a brewery with a tap room in town!
    "Landscapes exist in the material world yet soar in the realms of the spirit..." Tsung Ping, 5th Century China

  2. #42

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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Quote Originally Posted by Corran View Post
    If you say so. Mine was in the housing with shutter, if that matters. I vaguely remember the FedEx label saying something like 40 pounds,
    Bryan, it is clear. 8kg with flange, 5 kg without flange. Weight it can be even lowered to some 4kg.


    Quote Originally Posted by Corran View Post
    the SR-71 planes. Pretty cool stuff.

    Itek KA-80/A used in A-12, Lockheed U-2 and SR-71[1] reconnaissance aircraft. It is of the Optical Bar Camera type.



    Also used as Apollo Panoramic Camera Itek KA-80A derivative with 24" focal length used in Apollo program to map parts of the moon. Used on Apollo 15-17.


    Lens 24-inch (610-mm), f/3.5, Petzval
    Resolution 135 lines per millimetre, over 80 percent of the detail, no detail less than 108 lines per millimetre at low contrast
    Field of view along track 10 degrees 46 minutes (13.5 miles at 69-mile altitude)
    Field of view, crosstrack 108 degrees (211 miles at 69-mile altitude)
    Overlap Consecutive forward frames and consecutive aft frames overlap 10 percent; stereo pairs overlap 100 percent.
    Shutter type Scanning slit
    Slit width 0.015 to 0.300 inch (0.381 to 7.62 mm)
    Film type 3400, 3414, SO-230, or any other thin base material.
    Film width 5 inches (127 mm)
    Film thickness 0.003 inch (0.076 mm) or less.
    Format 45.24 by 4.5 inches (1,149 x 114.3 mm)
    Exposure control Automatic with variable slit
    V/H Range 0.010 to 0.019 radians per second
    Operating modes Monographic or 25 convergent stereo at autocyle of 4.7 to 8.0 seconds per cycle.
    Film Length 6,500 feet (2,005 metres)
    Exposures 1,650 total
    Weight (camera with film) 336 pounds
    Weight (Take-up cassette with film) 73 pounds

    Power Requirements 115VAC, 27.5VDC, 234 watts average, 340 watts peak


    https://history.nasa.gov/afj/simbayc...an-camera.html

  3. #43
    Corran's Avatar
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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    8kg is still 17 pounds, a far cry from your original 7lb statement. Do you insist on speculating on everything?

    Mine didn't have a "flange," it had a whole massive housing. I would not be surprised if the lens was 17 pounds but then the housing added another 10-15.
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  4. #44

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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Quote Originally Posted by Corran View Post
    8kg is still 17 pounds, a far cry from your original 7lb statement. Do you insist on speculating on everything?

    Mine didn't have a "flange," it had a whole massive housing. I would not be surprised if the lens was 17 pounds but then the housing added another 10-15.
    Bryan, this is, the lens can come with massive metal parts, but you mount 7 to 11 lbs to the LF camera. Lowering weight form 11 to 7 could need a serious DIY effort.

  5. #45
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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Yes, a serious DIY situation.

    Doorstop was the correct usage...
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  6. #46

    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    With resolution and coverage like that I would use a bigger film than 4x5.
    Have you considered a heavyweight 8x10 tailboard camera with a Packard or unusually large air-compound shutter?

  7. #47
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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Quote Originally Posted by Pere Casals View Post
    Also used as Apollo Panoramic Camera Itek KA-80A derivative with 24" focal length used in Apollo program to map parts of the moon. Used on Apollo 15-17...

    Weight (camera with film) 336 pounds
    But on the moon, that's only about 55 pounds. Hiking with ULF equipment is much more practical on the moon!
    "I love my Verito lens, but I always have to sharpen everything in Photoshop..."

  8. #48

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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    Quote Originally Posted by Mark Sawyer View Post
    But on the moon, that's only about 55 pounds. Hiking with ULF equipment is much more practical on the moon!
    Better than that, at moon orbit (where it was used) they had zero weight result...

    For sure... ULF Hikking is for astronauts

  9. #49

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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    I just re-read A Man on the Moon. That camera was one of the main duties of the astronaut who stayed aboard the command module. I don't remember which flight it was, but one of them had technical issues that shut the camera down. If I recall correctly, he was then limited to using other cameras, including a handheld Hasselblad. They were especially interested in getting photos of future landing sites.

  10. #50

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    Re: Kodak 305mm f/2.5 Aero-Ektar, what do I do with this doorstop?

    That's the alternate universe I was talking about earlier.

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