DPChallenge: A Digital Photography Contest You are not logged in. (log in or register) 
 

DPChallenge Forums >> Individual Photograph Discussion >> My best moon shot!
Pages:  
Showing posts 1 - 7 of 7, (reverse)
AuthorThread
 08/20/2007 11:58:14 PM · #1
Trying out my newly assembled birding and wildlife outfit on the moon yielded this image. The camera is a Nikon CP8800 that has built in VR. That camera is attached to an enormous Hewlett-Packard laser beam expander which doubles the effective focal length of the Nikon lens to 700mm. Clear aperture of the beam expander is 120mm. Shot in jpeg fine mode and post processed in Photoshop CS3. This image is a 100% crop of the original. The camera assembly weighs about 6 pounds and is gimbal mounted on a sturdy tripod.
Any comments/suggestions welcome!
08/21/2007 03:07:12 AM · #2
great job!, love the yellowish color

Message edited by author 2007-08-21 03:07:40.
 08/21/2007 03:13:02 AM · #3
Originally posted by ElGordo:
Trying out my newly assembled birding and wildlife outfit on the moon yielded this image. The camera is a Nikon CP8800 that has built in VR. That camera is attached to an enormous Hewlett-Packard laser beam expander which doubles the effective focal length of the Nikon lens to 700mm. Clear aperture of the beam expander is 120mm. Shot in jpeg fine mode and post processed in Photoshop CS3. This image is a 100% crop of the original. The camera assembly weighs about 6 pounds and is gimbal mounted on a sturdy tripod.
Any comments/suggestions welcome!


Can we see a photo of your rig.. its sounds insane.. Nice shot, slight blurriness but lots of details still..

Message edited by author 2007-08-21 03:13:34.
 08/21/2007 05:51:45 AM · #4
Originally posted by ElGordo:
Trying out my newly assembled birding and wildlife outfit on the moon yielded this image. The camera is a Nikon CP8800 that has built in VR. That camera is attached to an enormous Hewlett-Packard laser beam expander which doubles the effective focal length of the Nikon lens to 700mm. Clear aperture of the beam expander is 120mm. Shot in jpeg fine mode and post processed in Photoshop CS3. This image is a 100% crop of the original. The camera assembly weighs about 6 pounds and is gimbal mounted on a sturdy tripod.
Any comments/suggestions welcome!


Indeed, a very nice image of the moon. I can not say that I comprehend the HP technology that you described, can you share some additional details about it so others, including myself, can better appreciate how you captured this wonderful image?
 08/21/2007 11:42:08 AM · #5
Here photos of the assembly. The gimbal setup and camera mount is home made.



The HP beam expander consists of two lens groups: the objective lens is a positive acromat with a clear aperture of 120mm and the rear group is a negative acromat with a 60mm clear aperture. The combination focal lengths yield a 2X expander or reducer depending on the orientation. These tend to be rather pricey (kilobucks!) but I obtained mine at a government salvage auction for the pittance of $30.

Message edited by author 2007-08-21 12:21:58.
 08/21/2007 06:59:03 PM · #6
Wonderful shot and setup. You should get some great bird/wildlife photos with that. Thanks for the info.
 08/21/2007 09:00:42 PM · #7
Originally posted by ElGordo:
Here photos of the assembly. The gimbal setup and camera mount is home made.



The HP beam expander consists of two lens groups: the objective lens is a positive acromat with a clear aperture of 120mm and the rear group is a negative acromat with a 60mm clear aperture. The combination focal lengths yield a 2X expander or reducer depending on the orientation. These tend to be rather pricey (kilobucks!) but I obtained mine at a government salvage auction for the pittance of $30.


All very cool and ultra impressive. Your rig rivals my 1,000mm f11.0 Nikkor catadioptric lens with a x2 adaptor on my Nikon D2x. It yields an effective focal length of 3,000mm compared to a 35mm set up. Here is a full frame shot of the moon that I captured a few years ago. Albeit that my rig cost slightly more than $30!



Message edited by author 2007-08-21 21:01:43.
Pages:  
Current Server Time: 09/11/2025 02:14:09 PM

Please log in or register to post to the forums.


Home - Challenges - Community - League - Photos - Cameras - Lenses - Learn - Help - Terms of Use - Privacy - Top ^
DPChallenge, and website content and design, Copyright © 2001-2025 Challenging Technologies, LLC.
All digital photo copyrights belong to the photographers and may not be used without permission.
Current Server Time: 09/11/2025 02:14:09 PM EDT.