Archived posting to the Leica Users Group, 2014/10/07

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Subject: [Leica] IMG: Gibbous moon
From: pklein at threshinc.com (Peter Klein)
Date: Tue, 07 Oct 2014 15:07:50 -0700

<https://www.flickr.com/photos/24844563 at 
N04/15285876780/in/photostream/lightbox/>

Telescope?  I ain't got no steenkin' telescope. This was taken with a 
1970s-vintage Vivitar 300/5.5 and a Tokina teleconverter on a 
tripod-mounted Oly E-M5, so equivalent full-frame focal length is 
1200mm.  The posted picture is about 64% of the frame by linear 
measurement, or 41% by area.

There was a thin haze in the air, but this being the Pacific Northwest, 
I decided to seize the opportunity of a relatively clear night anyway. 
The original image was a bit soft at 1:1.  I extracted the green 
channel*,  ran it through Focus Magic, which really brought out the 
details, then some conventional rotation, curves and contrast enhancement.

--Peter, returning to the LEM

* Drastically reduces CA-related softness, and the green channel has 2x 
more pixels than the others. This was visibly more effective than just 
using Capture One's "color fringing" compensation.


Replies: Reply from grduprey at mchsi.com (grduprey at mchsi.com) ([Leica] IMG: Gibbous moon)