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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 17 Nov 2010 (Wednesday) 14:48
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Moon with my 60D, including rupes recta!

 
MintMark
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Nov 17, 2010 14:48 |  #1

I feel really lucky. I took a picture of the moon on Monday with my 60D through my small telescope (Megrez 72) with a 2x barlow, just to see how well it could do.

I was very surprised to find that I had captured rupes recta (the straight wall)... that's a first for me :) Here is a crop (1/20th second, ISO 100)


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More from the same image in https://photography-on-the.net …p?p=11301743#po​st11301743

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Madweasel
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Nov 17, 2010 15:45 |  #2

Very good shot for a first go. I remember sketching that feature at the telescope about 32 years ago!


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Celestron
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Nov 17, 2010 16:44 |  #3

Congrats to you ! Do you think you could have got that shot that close without a telescope ?




  
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MintMark
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Nov 18, 2010 05:13 |  #4

Celestron wrote in post #11302522 (external link)
Congrats to you ! Do you think you could have got that shot that close without a telescope ?

Hello Ron,

I tried to calculate the effective focal length of that combination when I first used it and the answer was around 1250mm. The effect of the 2x barlow depends on where it is in the chain and the spacing between things... I have to use scope -> extension tube -> barlow -> adapter -> camera. I also used an astrotrac... not really required for the exposure but it keeps the moon in the field and makes it much easier without constant reframing.

So, I guess you could do it with 500mm and a 2x teleconverter. Luckily the moon is bright... I think I was at about f/17.


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Moon with my 60D, including rupes recta!
FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
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