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Dslr Lens Vs Telescope - Fatality


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#1 rospondek

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Posted 05 June 2017 - 02:44 PM

If anyone of you wondered if you can replace telescope with a DSLR lens. A little comparison.

ISS caught with my D500 and 70-200 at 200mm.

 

Settings:

Body: D500

Lens: Nikkor 70-200mm at 200mm

Aperture: f/8

ISO: 1250

Exposition: 1/1600s

Tracking: Handheld

Focus: Manual on the Moon (no stars to try)

Target: East ISS fly-through

 

100% crop

246150_dsc6980.jpg

 

x2 in PS

304113_dsc6980x2.jpg

 

And to compare from astrophoto forum I'm registered.

 

Telescope 1500mm without Barlow lens

258568_post229360607166001496597910.png

 

And 1500mm with Barlow lens x2.25

932515_iss20170602221243.jpg

 

Looks like mine have a little less details but it is awesome as well! And a way cuter! Don't you think? :D


  • Jos Bennenbroek likes this

#2 MarkM

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Posted 05 June 2017 - 04:24 PM

OMG that is incredible! Thanks for the comparison. How fast is the ISS traveling? Unbelievable.

#3 rospondek

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Posted 05 June 2017 - 04:59 PM

7,6km/s or 5 miles per second :D

 

It took him/her/it 10.5 minutes to fly from west to east. Horizon to horizon. Pretty speedy little thingie.

 

If you want to see it by yourself be my guest - http://www.heavens-above.com/ ^_^

Just enter your location, or add it automatically, choose what you want to see (ISS and Iridium flares are the best, cause visible with naked eye), take a seat, a beer, and just watch the portion of the sky the show will be presented ;)

 

ISS is visible as fast moving bright star. And as you can see it is a loooong show.

Iridium flares are visible like fast moving really bright (usually few times brighter and 'bigger'* than ISS) meteors. They are visible for couple of seconds only so you have to be prepared to catch them on camera or with your eyes.

 

*bigger because of the amount of light bounced, not the actual size. Duuuh! ;)



#4 Reciprocityrules

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Posted 05 June 2017 - 09:22 PM

I tip my hat to you!  I admire your steadfast dedication.  That's it - speechless. 


Jonny


#5 Roderick

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Posted 06 June 2017 - 07:16 AM

Great stuff Rospondek.



#6 David Pavlich

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Posted 09 June 2017 - 08:17 AM

Nicely done!  The best shot I've seen from a backyarder was taken with a Celestron C14 which has a 3910mm focal length and is f11.  It took a ton of planning and very accurate placement of the scope as the field of view is quite small on that particular scope (I used to have one).  But the guy caught a great shot!

 

David


'When one engine fails on a twin-engine airplane, you always have enough power left to get you to the scene of the crash.'

 




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