Tony Butterfield had a good observation... it appears that the image was warped TWICE upon projection... that is, warped once and then the warped image was warped again.
Maybe look for that in the code? 

On Aug 13, 2014, at 2:29 PM, Alexander Wolf <email address hidden> wrote:

> ** Changed in: stellarium
>    Milestone: 0.13.1 => None
> 
> -- 
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/676260
> 
> Title:
>  Spherical mirror distortion doesn't work correctly
> 
> Status in Stellarium:
>  Triaged
> 
> Bug description:
>  Spherical mirror works in 0.10.2. When I run the same parameters in
>  0.10.5 I get an image which is not nearly correct. Screen shot is
>  attached.
> 
>  2010-11-16T16:27:32
>  Windows XP
>  Compiled with GCC 4.4.0
>  Qt runtime version: 4.6.2
>  Qt compilation version: 4.6.2
>  Addressing mode: 32-bit
>  Total memory: 2045 MB (unreliable)
>  Total virtual memory: 2047 MB (unreliable)
>  Physical memory in use: 30%
>  Processor speed: 2126 MHz
>  Processor name: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
>  Processor speed: 2126 MHz
>  Processor name: Intel(R) Core(TM)2 CPU 6400 @ 2.13GHz
>  C:\Program Files\Stellarium 0.10.5\stellarium.exe
>   -------------------------------------------------------
>  [ This is Stellarium 0.10.5 - http://www.stellarium.org ]
>  [ Copyright (C) 2000-2010 Fabien Chereau et al ]
>   -------------------------------------------------------
>  Writing log file to: "C:/Documents and Settings/Blovegro/Application Data/Stellarium/log.txt"
>  File search paths:
>    0 . "C:\Documents and Settings\Blovegro\Application Data\Stellarium"
>    1 . "."
>  Attempting to use an existing older config file.
>  Config file is: "C:\Documents and Settings\Blovegro\Application Data\Stellarium/config.ini"
>  Qt GL paint engine is: "OpenGL2"
>  Cache directory is: "C:\Documents and Settings\Blovegro\Local Settings\Application Data\stellarium\stellarium\cache"
>  Sky language is "en"
>  Application language is "en"
>  Loading Solar System data ...
>  Loaded 38 / 38 planet orbits
>  Loading star data ...
>  "Loading "./stars/default/stars_0_0v0_1.cat": 0_0v0_1; 5013"
>  "Loading "./stars/default/stars_1_0v0_1.cat": 1_0v0_1; 21999"
>  "Loading "./stars/default/stars_2_0v0_1.cat": 2_0v0_1; 151416"
>  "Loading "./stars/default/stars_3_1v0_0.cat": 3_1v0_0; 434064"
>  Finished loading star catalogue data, max_geodesic_level: 3
>  navigation/preset_sky_time is a double - treating as jday: 2.45151e+06
>  Loaded 10051 NGC records
>  Loading NGC name data ...
>  Loaded 222 / 222 NGC name records successfully
>  Loaded 88 / 88 constellation records successfully for culture "western"
>  Loaded 85 / 85 constellation art records successfully for culture "western"
>  Loaded 89 / 89 constellation names
>  Loading constellation boundary data ...
>  Loaded 782 constellation boundary segments
>  Loading star names from "./skycultures/western/star_names.fab"
>  Loaded 230 / 230 common star names
>  Loading star names from "./stars/default/name.fab"
>  Loaded 3215 / 4359 scientific star names
>  Creating GUI ...
>  Use OpenGL framebuffer objects for viewport effect: "sphericMirrorDistorter"
>  INFO Saving screenshot in file: "C:/Documents and Settings/Blovegro/Desktop/stellarium-000.png"
>  Downloaded 0 files (0 kbytes) in a session of 27.266 sec (average of 0 kB/s + 0 files from cache (0 kB)).
> 
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