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Orion widefield - modded t5i "first light" or oops...

astrophotography dslr imaging
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#1 wxcloud

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Posted 13 February 2020 - 10:12 PM

I know its not really traditional to post unfinished / test images, but I was wondering why even with a 12nm h-alpha filter I was getting 4 minute sub exposures without trashing the frame. For whatever reason, probably the 2 hours of sleep if that I got last night and work, I changed the preset ISO from 1600 back to 100, then proceeded to freeze for a good half out in the 20 or lower temps with snow on the ground and managed to have my tripod semi freeze to the ground a bit.

 

I figured something was up when I plopped down the star adventurer and just basically went for it. LOL lol.gifblush.gif

 

4 min (and change) sub exposure at iso 100 with canon 50mm f/1.4 USM lens at f/2.8 and t5i

 

EDIT: I am still trying to figure out how to get a color image from using the h-alpha filter. Usually split the channels and use the red. Using gimp, rawtherapee

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  • testfail.jpg

Edited by wxcloud, 13 February 2020 - 10:14 PM.

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#2 17.5Dob

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Posted 13 February 2020 - 10:25 PM

Too bad it wasn't an "ISO- less" Nikon....wink.gif



#3 wxcloud

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Posted 13 February 2020 - 10:30 PM

Too bad it wasn't an "ISO- less" Nikon....wink.gif


I almost went Nikon hunting when I went looking for a modified camera, biggest factors of opting for the t5i was I have a load of Canon lenses and I recently got the h-alpha clip filter for my apsc bodies.

I'm actually curious about Nikon and if I get the larger rig up and going, the eq-6 R pro and Celestron 80ed where I can use 2” filters.


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