Rosette- New Image with Modified Camera (Compared to 7DII)

Canon T5i (Modified), Canon 300mm f2.8is II, f2.8, 60sec exposure, ISO 1600, Astrotrac, Light Pollution Filter, 66 Exposures for 66 Minutes Total, 35 Minutes Dark Frames, 30 Bias Frames, 25 Flat Frames, Stacked and Combined with ImagesPlus, Final Edits CS6 and Lightroom.

Please view in shadowbox. 

For those of you who are interested, his is really a comparative exercise.  I wanted to compare my Modified T5i to my 7DII so I set out the other night to re-shoot the Rosette nebula.  The IR filters on stock cameras block 80% of the Hydrogen Alpha Emission Lines (The reds and magentas) of emission nebula, making it quite challenging to acquire adequate pixel information on these deep sky subjects without very long exposure times on bright subjects and nearly impossible on very faint subjects.  This is compounded for those of us shooting in moderate light pollution areas. 

Modifying the camera by removing the stock IR filter allows the sensor to capture these faint emission nebulas with more detail.

When this image was shot there wsa a 22% Waxing Moon located in the nearby constellation of Taurus, which really washed out the fainter stars to the naked eye.  When I previously shot this image it was during a new moon, so the skies were very dark.  Despite the challenges of significantly brighter skies and more atmosphere to shoot through (The Rosette was further in the southern sky by the time it was dark enough to shoot) it is immediately apparent how much more data is gathered by the sensor. 

The original post (below) required maxing out Master Saturation and then individual color channels of red and magenta.  The vibrance slider was heavily to the right and still many areas of the nebula appeared white and light pink. 

With the modified camera, very little saturation and vibrance was used.  The wispy cloud detail in the emission nebula is much more apparent and the dark nebula "fractures" are more defined.

I increased the exposure much less on the new version and noise was much lower in the final result.  Less noise reduction and sharpening was required.