Thread: SpaceCat Eta
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  #10  
Old 07-02-2020, 04:06 PM
JA
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JA is offline
 
Join Date: Oct 2016
Location: Melbourne, Australia
Posts: 3,052
Quote:
Originally Posted by LewisM View Post
Tack sharp? No, it looks rather soft to me Peter. Quite soft in fact - I guess hand-focused? Plus the red glow is intriguing in places.

Not a jibe, just a genuine observation I am seeing in a LOT of Redcat images.
Hi L,

It's potentially a lot sharper (some 3x sharper/higher res) than what can be seen in the web image Peter linked to, since

1. the original photographed image scale was something around 4.4 arcseconds/pixel (based on the 250mm focal length of the Redcat optic on Full-Frame, roughly 8.24 degrees wide over the 6720 pixels of the Canon EOS Ra sensor), versus

2. the displayed web image scale of around 12.8 arcseconds/pixel (based on an image estimated at around 6.85 degrees wide [vide Stelllarium comparison] over the 1920 pixels width of the web image posted)

Best
JA
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