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Here is my completed image of the Eagle Nebula (M16) imaged with Sulphur, Hydrogen, and Oxygen narrowband filters. This false-color widefield image of the nebula represents the strong oxygen signal as cyan, hydrogen as yellow/orange, and the stronger sulphur signal as red. Naturally, this nebula is nearly all red in color, as hydrogen-alpha dominates the field. With selective filters and processing I have stretched the intensity of the Oiii and Sii to better represent where they lie in the nebula.
Equipment:
OTA: William Optics GT81 w/0.8x reducer (382mm fl at f/4.7)
Mount: Orion Sirius EQ-G (HEQ-5)
Guidescope: Orion 50mm guidescope
Guiding camera: Orion StarShoot Autoguider
Imaging camera: ZWO ASI1600MM-Cool
Accessories:
DeepSkyDad Autofocuser
QHYCCD PoleMaster
Software:
SGP
PHD2
CdC
PixInsight
Acquisition:
Location: Flower Mound, TX for Ha(Bortle 7), Atoka, OK and Ft. Griffin State Historic Park, TX for Oiii and Sii(Bortle 3)
Dates: 5/12/18, 5/26/18, 5/27/18, 6/29/18, 6/30/18, 8/2/18, 8/3/18, 8/6/18
Gain: 200 Offset: 50
Camera temp: -10C
Sii: 36x600" Astrodon 3nm
Ha: 160x300" Astrodon 5nm
Oiii: 37x600" Astrodon 3nm
Total integration time: 25hr 30min
64x darks per calibration (master from library)
30x flats per calibration
200x bias per calibration (master from library)
Preprocessing:
Batch PreProcessing script to generate calibrated images
StarAlignment
LocalNormalization
ImageIntegration
DrizzleIntegration
DynamicCrop each master
DBE each master
Luminance Processing:
Duplicated the master Ha to use as the luminance
Deconvolution
TGV & MMT noise reduction (via Jon Rista's method)
HistogramTransformation bring to non-linear
Duplicated the image to create a starless version, using a starmask and several iterations of MMT and MT. Then pushed the faint nebulosity in the starless version using PixelMath expression: "1-(1-$T)*(1-$T)"
Combined the starless version with the image using PixelMath expression "F=0.4; (1-(1-$T)*(1-s)*F)+($T*~F)" followed by the same function but with F=0.2, (s=starless photo).
HDRMultiscaleTransform to reveal core
MultiscaleLinearTransform for sharpening
LocalHistogramEqualization
MMT and MT for star size reduction
MMT for noise reduction of the darker areas
Preparing separate Sii, Ha, and Oiii linear masters for tonemapping (applied to each master individually):
TGV & MMT noise reduction (via Jon Rista's method)
Removed stars via a StarMask and a few iterations of MMT and MT
Further removed background artifacts with an unmasked MMT
HistogramTransformation to bring to non-linear
HDRMultiscaleTransform to reveal core
Combined prepared Sii, Ha, and Oiii masters with ChannelCombination:
R: Sii
G: Ha
B: Oiii
Tonemap Processing:
Invert>SCNR green>Invert to remove magenta
Several a/b channel CurvesTransformations using ColorMasks to alter the colors to an aesthetically pleasing palette
CurvesTransformation for saturation
DBE to remove color bias in the corners
Combined Tonemap with Luminance using LRGBCombination
HistogramTransformation to stretch image slightly
UnsharpMask with a StarMask to harden up the soft stars a tad
CurvesTransformation for slight saturation
ACDNR for final noise reduction
Resampled to 40% for web posting
Manobras para inversão de tração do M204 na RH59, 1178 assumindo a liderança e 1286 como comandada.
Some maneuvering at RH59 to invert the leading of the M204, 1178 got the leading over the 1286.
A monochrome tonally inverted image of Comet NEOWISE, captured on 21st July, with a Fuji X-T2, 100-400mm (@100mm fl), 15x 60 secs, ISO800. This results in a 16 degree field of view. Notice how the dust tail has fanned out and the total length of the ion tail exceeds the FOV.
More Inverted Negatives at www.invertedcal.com/
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See more of my Photography www.callumjoelphotography.com/
Lasiocampa quercus - 66.007 - BF1637
Wingspan 45-75 mm.
FOODPLANTS - mainly heather (Calluna) and bilberry (Vaccinium myrtillus), but also include bramble (Rubus), Sallows (Salix), broom (Cytisus scoparius), sloe (Prunus spinosa), hawthorn (Crataegus), hazel (Corylus) and Sea-buckthorn (Hippophae rhamnoides).
Caught in a Moth Trap at Potteric Carr, released unharmed.
Lepidoptera - Heterocera - Lasiocampidae - Lasiocampinae
(Macrolepidoptera)
New tools on Picasa :-) I like this inverted white rose.
I like the tones on this.
Please feel free to comment, or add notes etc as i would love to develop my picture taking capability.
Thank you.
Part of my transformation series. I took one object a leaf shaped silver spoon holder for cooking and photographed it and processed the images to how one object can be transformed into many different things
Hand made 6x9 camera with Schneider Super-Angulon 47mm f56 MC
No finder
KODAK T-Max400 (400TMY-2)
Self development, Xtol 1:1, 8.5min.
コッチの方が美しいと思うのは、写真がダメなのか、ネガで萌え過ぎなのか．． orz
This uncropped inverted color image of Comet Comet near M3 was taken with a Fujifilm X-T3, Nikkor 180mm f/2.8 @ f/5.6, iso 3200, exp 80x60s. Post-processed in PixInsight and Photoshop. Taken between 3:12AM and 5:29AM under very thin broken cirrus clouds and some wind. Trailing stars (comet was fixed) were dimmed using PixInsight. The comet's tail can be tracved out to 4 degrees from the nucleus.
Of note: Attempts taking 120 second exposures proved useless due to the comet's relative rapid motion. In the coming days, I'll be forced to take ~30s exposures with higher iso.
>>> Music: "Blue" by r.e.m. [despite the title -- I was listening to this song on loop. Another engaging, expansive, moving, strange collaboration between r.e.m./Michael Stipe and Patti Smith with sonic implosions in various wavelengths, a beautiful, resonant landscape.]
"I like you, love you, every coast of you.
I've seen your eddies and tides and hurricanes and cyclones.
Low ebb tide and high, full moon.
Up close and distant.
I read you.
Look, the sky, the sea, the ocean, the sun, the moon.
Blue, blue, blue, blue, blue, blue, blue blue, blue, blue, blue, blue ..."
~ Michael Stipe
[ forgotten insomnia sketch 1223f ]
Brighton Pier
RAND plastic toy camera (Diana clone) from the 1960s, I have no clue as to where or when this cheap plastic camera came to me, was great fun using it, and was pleasantly surprised by how the photos came out.
Ilford HP5 plus and semi-stand developed in Rodinal 1+100 for 1 hour, aggitation at 30 minutes.
During late 1951 and early 1952 this Vought F4U-5NL Corsair was assigned to VC-3 aboard the USS Essex and flew 77 combat hours over Korea. It was a night fighter, and the pod on the right wing held a radar. It later also flew from the USS Tarawa and the USS Boxer. The plane was later flown by the US Marine Corps. It was retired from military service in 1956.
Seen at the 2019 Thunder Over Michigan Air Show in Ypsilanti, Michigan, where they were “Corsair Crazy” with 11 Corsairs. The show was organized by the Yankee Air Museum.
No se trata de hablar,
ni tampoco de callar:
se trata de abrir algo
entre la palabra y el silencio.
Quizá cuando transcurra todo,
también la palabra y el silencio,
quede esa zona abierta
como una esperanza hacia atrás.
Y tal vez ese signo invertido
constituya un toque de atención
para este mutismo ilimitado
donde palpablemente nos hundimos.
Roberto Juarroz
Liberación de los pensamientos.
bonita música para escuchar...