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Ratooragh Weather Systems

Campbell Scientific 2018-11-21 03:35:00 Pressure 1007mb, Temp 5.2°C, RH 82%, Wind Dir 41° at 11knots, Gusting to 14knots, Rain last 24 hrs = 0.2mm and Davis Vantage Pro 2018/11/21 03:20:00 Pressure 1006mb, Temp 4.0°C, RH 88%, Wind Dir 35° at 12knots, Gusting to 16knots, Rain last 24 hrs = 0.2mm <- Current Weather
Date Time: 2018/11/21 03:21, Turbine Speed: 925 rpm, WindSpeed: 10.80 knts, Input to Solar Tank: 27.24 watts, Input to Buffer Tank: 0.00 watts, Solar Relay: On, Buffer Relay: Off, Relay Override: Off, Solar Tank Temp: 44.80 C, Buffer Tank Temp: 27.75 C, Input to Solar Tank in 24Hrs: 0.00 kW, Input to Buffer Tank in 24Hrs: 0.00 kW, Total Energy Generated in 24Hrs: 0.00 kWatts and Date Time: 2018/11/21 03:06:07, PV Energy: 0.0 kW, Solar Rad. Time: 2018-11-21 03:25:00, Solar Rad.: 0 W/m², Sun Elevation: -43.5°, Total Generated in 24hrs: null kW <- Wind Turbine & PhotoVoltaic Output
Schull Tides for 2018-11-21 Time in UTC
1st HW 03:15 3.1m, 2nd HW 15:35 3.2m, 1st LW 09:15 0.8m, 2nd LW 21:35 0.7m

Altocumulus and Sea Fog

Altocumulus Lenticularis

Altocumulus Lenticularis

Altocumulus Lenticularis

Altocumulus Lenticularis

Altocumulus

Cirrocumulus with Contrails

Cirrocumulus

Cirrus

Crepuscular Rays

Crepuscular Rays

Cumulonimbus

Cumulonimbus

Cumulonimbus

Squall Line

Double Rainbow

Double Rainbow

Moonset

Sea Mist

The Sea 'Steaming'

Snow Storm

Storm Front, Thailand

Stratus

Altocumulus at Sunrise

Sun Setting

Sunset

Sunset under Stratocumulus

RAW Image Quality Problems

Here is the text I have posted on the Darktable Forum with images inserted.

I would like to try and find out why the RAW Images from my Nikon D100 are 'blown out' when viewed in Darktable. There is the same problem when using UFRAW. It must be to do with the RawSpeed Library https://github.com/darktable-org/rawspeed.

This is a RAW image (NEF) imported into Darktable, Sharpened, Levels and Red /Blue channels Swapped. NEF Original Blown Out Not nice!! No cloud to see and grass under the trees blown out,
These Histograms  Histogramsdemonstrate the problem. From left to right we have the NEF Image as seen in Darktable before any corrections, The NEF Image in Nikon Capture NX-D and on the right the file exported by the Nikon Software as a TIFF in Darkroom before any corrections.
Nikon use NEF as the file extension for their RAW format images.

Here is a NEF image,straight out of the camera, Blown Outwith the Levels corrected and converted to TIFF showing the problem. I have selected two areas as an example.
The insets are from the same image converted to TIFF in the Nikon Capture NX-D Software provided free by nikon here https://www.nikonusa.com/en/nikon-products/product/imaging-software/capt... with the levels corrected in Darktable. The extra detail is very clear.
I was alerted to this problem recently by the excellent website LifePixel. I had a tutorial from Dan Wampler who was most insistent that I use the Nikon software first to get the extra detail. I did not believe him, but have found with my own testing that he is correct, and think this information is worth sharing.
On this page https://www.lifepixel.com/photo-tutorials/infrared-photoshop-videos there is a video titled 'Infrared RAW file white balance issues & solutions' which shows the problem with White Balance as well. However I have got my White Balance set up fine in the camera, so have no problem with this. Clearly Adobe cannot get it sorted either!
I am shooting InfraRed using the Super Color IR Filter from LifePixel, but I am sure if you are shooting in RAW on a Canon or Nikon without an IR Conversion the same problem will apply.
I would suggest therefore that anyone shooting RAW will run their images through the Nikon or Canon software first so pull out all the detail.
I use Linux for all my computing needs, but have not been able to get the Nikon Software to run under 'Wine', so have had to install Windows 7 in VirtualBox and then run the Nikon software from there. It does have a batch mode, so it is easy to convert the new images from my camera to TIFF and than back into Darktabe to sort them out.
I am not clever enough to work on the RawSpeed Library to try and improve the importing of NEF Images, but maybe there is someone who can.

Here is what I am after with the Red and Blue channels swapped in darktable.IR with Red Blue Channels Swapped and as Black and White like the Old IR FilmIR Image in Monochrome