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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 31 Dec 2009 (Thursday) 21:07
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The Official Shoot the Moon Thread

 
MalVeauX
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Post edited over 2 years ago by MalVeauX.
     
Mar 14, 2016 23:43 |  #3631

600mm and EOS-M

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Very best,

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jwcdds
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Mar 14, 2016 23:48 |  #3632

Moon on Pi day.

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Mar 15, 2016 19:56 |  #3633

Over Central Florida a few minutes ago. Cropped only, no mods.

Danny


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Landscape, wildlife and astrophotography!!
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MalVeauX
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Mar 15, 2016 20:44 |  #3634

Heya,

Did the moon tonight with three different setups to compare.

First is bare lens. Second is lens + 2.0x TC. Third is 2.0x & 1.4x TC. Comparing them at 1:1, ultimately I don't think there's much more resolving detail using the TC's, so I know I'm limited by overall aperture size and to do better I simply need a larger aperture telescope.

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Roy ­ A. ­ Rust
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Post edited over 2 years ago by Roy A. Rust with reason 'Needed to correct the typo in the date'. (2 edits in all)
     
Mar 15, 2016 22:04 |  #3635

I decided to see if I could improve on my last post of the moon. Tonight I dragged out my Meade 127 telescope with my Nikon D5200 using both extensions on the T-mount, making it the equivalent of a 2310mm lens, or the 35mm equivalent of a 3465mm lens, with a fixed aperture of f:18.

(To post this on my gallery, I had to select an "Approved" lens from the provided list. The Meade telescope isn't listed, so I just selected one of my listed lenses. Why can't we just list the lens we use? Is there a way to add lenses to the list?)

March 15, 2016, at 9:08 PM. This was exposed for 1/750 of a second, and an ISO of 4000.


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Roy ­ A. ­ Rust
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Mar 15, 2016 22:20 as a reply to  @ MalVeauX's post |  #3636

Fantastic detail. I like the image so much that I ordered the Tamron 150-600 a few days ago. Hope I manage to get as much detail with mine. It's supposed to be here in a couple of days. With the moon up now most of the early evening, I'll have plenty of time to see what I can do with it. Thanks for posting a picture that serves as a good review!




  
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MalVeauX
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Mar 15, 2016 22:24 |  #3637

Roy A. Rust wrote in post #17936780 (external link)
Fantastic detail. I like the image so much that I ordered the Tamron 150-600 a few days ago. Hope I manage to get as much detail with mine. It's supposed to be here in a couple of days. With the moon up now most of the early evening, I'll have plenty of time to see what I can do with it. Thanks for posting a picture that serves as a good review!

Heya,

You nailed the X, really cool!

I'm in the process of moving to a telescope system for a variety of things. I enjoy the Tamron and it definitely lets you do a light portable approach to lunar stuff and of course my main use, wildlife. But it's definitely limited when it comes to the moon and magnification as it's aperture is just not big enough to fully resolve a lot more detail (at 1400mm the detail resolved is honestly only a hair more than at bare 500mm on the lens, so definitely showing aperture limitations). Soon I'll be pointing a 6" SCT at the moon for a while and leaving my Tamron for my birds.

Very best,


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Post edited over 2 years ago by jwcdds.
     
Mar 16, 2016 00:28 |  #3638

One from tonight. Didn't have my 7D2 nor 100-400ii available tonight. Had to settle with FF sensor + 100-400i's old-fashion 2-stop IS. Looks like the push-pull zoom slipped a bit and I was at 780mm instead of 800mm too. :lol:

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STIC
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Mar 16, 2016 02:06 |  #3639
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Oldie from last year, reprocessed...

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7D MarkII l 50 1.8 STM l15-85 IS USM l 100-400 IS L l 2x converter l 580EX II l Wireless remote l A computer l Some software l A vehicle to get me around...;)

  
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Celestron
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Mar 16, 2016 08:44 |  #3640

jwcdds wrote in post #17936894 (external link)
One from tonight. Didn't have my 7D2 nor 100-400ii available tonight. Had to settle with FF sensor + 100-400i's old-fashion 2-stop IS. Looks like the push-pull zoom slipped a bit and I was at 780mm instead of 800mm too. :lol:

QUOTED IMAGE


Looks like this setup worked just fine tho even tho the zoom may have slipped some (known as lens creep) . That's the main reason i do not use my sigma 135-400mm APO for any upward shots or downward shots is lens creep . But by your image you got good detail and i see no effects of lens creep in your image .




  
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TCampbell
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Mar 16, 2016 18:11 |  #3641

jwcdds wrote in post #17936894 (external link)
One from tonight. Didn't have my 7D2 nor 100-400ii available tonight. Had to settle with FF sensor + 100-400i's old-fashion 2-stop IS. Looks like the push-pull zoom slipped a bit and I was at 780mm instead of 800mm too. :lol:

QUOTED IMAGE

Yeah, but you still captured the Lunar X & V on the terminator. Nice shot!




  
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TCampbell
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Mar 16, 2016 18:17 |  #3642

Roy A. Rust wrote in post #17936766 (external link)
I decided to see if I could improve on my last post of the moon. Tonight I dragged out my Meade 127 telescope with my Nikon D5200 using both extensions on the T-mount, making it the equivalent of a 2310mm lens, or the 35mm equivalent of a 3465mm lens, with a fixed aperture of f:18.

(To post this on my gallery, I had to select an "Approved" lens from the provided list. The Meade telescope isn't listed, so I just selected one of my listed lenses. Why can't we just list the lens we use? Is there a way to add lenses to the list?)

March 15, 2916, at 9:08 PM. This was exposed for 1/750 of a second, and an ISO of 4000.
thumbnail
Hosted photo: posted by Roy A. Rust in
./showthread.php?p=179​36766&i=i196306511
forum: Astronomy & Celestial

I love your detail along the terminator and you did capture the X & V!

I'm noticing that the image is a bit brighter along the edges (as compared to the center). Did you apply a local adjustment?




  
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C ­ Scott ­ IV
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Post edited over 2 years ago by C Scott IV.
     
Mar 16, 2016 19:13 |  #3643

Roy A. Rust wrote in post #17936766 (external link)
March 15, 2916, at 9:08 PM. This was exposed for 1/750 of a second, and an ISO of 4000.
thumbnail
Hosted photo: posted by Roy A. Rust in
./showthread.php?p=179​36766&i=i196306511
forum: Astronomy & Celestial

And you time traveled to boot! Nice shot.


Charles
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Roy ­ A. ­ Rust
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Post edited over 2 years ago by Roy A. Rust with reason 'Further explanation of the problem with the exposure.'. (3 edits in all)
     
Mar 16, 2016 19:47 as a reply to  @ TCampbell's post |  #3644

No, I didn't adjust the exposure at all. I just reduced it in size for posting, and sharpened it once to compensate for the sharpness lost when it was reduced. The brightness on the right edge is there in the original sized image, too. It might be due to having the HDR on. I don't know if you are familiar with HDR, or if others are if they read this, but HDR is High Dynamic Range. With HDR on, the camera takes two images automatically, one for the bright areas and another, longer one for the dark areas, and then combines them to create one image. I used the HDR because the moon is so bright on the side facing the sun, while the oblique lighting provides shadows and lots of contrast along the terminator. This was the first time I used HDR for the moon, and it balanced the bright areas a lot better with the detail along the terminator. In the past, no amount of adjustment could balance the two lighting extremes as well. I guess that the camera just didn't perfectly line up the images, leaving the bright edge along the right side. Still, I like it with the HDR on, compared with the entire bright side being overexposed.

Since you mentioned the brighter edge, I noticed a brighter band between the detail at the terminator and the darkened area that is normally overexposed. I guess that the HDR didn't balance both areas that well. The HDR has five settings. Maybe I boosted the HDR too much. I don't remember which setting I used. Now you've got me looking for shortcomings... I'll have to try again and test each HDR setting to find which gives the best result.

LATER: I checked the photos I took along with this one, and the bright band and edges do seem to be due to the HDR. In this one, I had the HDR set to "Extra High". The images with the HDR turned off, or with it set to High, Normal, or Low, didn't have the bright areas. I also noticed in one with it set to Extra High, that the overlap extended out past the right edge, instead of leaving a strip too bright. Don't think I'll be using the Extra High HDR setting much any more. Thanks for pointing out the problem...




  
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Roy ­ A. ­ Rust
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Mar 16, 2016 19:52 as a reply to  @ C Scott IV's post |  #3645

Sorry about that... Guess I hit the 9 instead of the 0, and didn't notice. I had to go back and check the posting to see what you were referring to. Maybe I can edit that before anyone else notices. Thanks for pointing it out.




  
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The Official Shoot the Moon Thread
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