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A cutout from ATLAS' 3rd all-sky wallpaper created from data taken in 2019. This is untouched cosmetically and is photometrically calibrated.
Another successful session using the Starizona HyperStar (converts sluggish f/10 telescope into speedy f/2.2). Detailed capture with only 16 minutes of integration time.
Date: October 29, 2025
Bortle Class 5 backyard, SF Bay Area (East Bay)
Capture: 16 x 60-sec subframes, OSC
Telescope: Celestron C9.25 SCT
Accessory: Starizona HyperStar C9.25-v4 lens
Imaging Camera: ZWO ASI 2600MC
Antlia Triband RGB Ultra, 2"
Mount: iOptron GEM45
ZWO ASIAIR Plus Control and Capture
Calibrated with Darks, Flats and Dark Flats
Processed with PixInsight, Photoshop
Shooting a test roll with a Yashica Electro 35GS after calibrating the rangefinder which was way off.
Still playing with my 'new' (old secondhand) macro. I've now calibrated it successfully. My 150-600mm Tamron is still in for service and will be at least another week.
This image shows a female wolf spider in the Wildlife Cafe. She has her egg sac attached and she will carry this around until the spiderlings hatch. She will then carry the babies on her back until they are large enough to fend for themselves. I see a wolf spider on the same post every year at this time. She is still tiny at around 1 cm long and is seen here with a greenfly for lunch.
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
_________Imagen calibrada en un monitor HP Pavilion IPS-LED.________
_________Calibrated image on a monitor HP Pavilion IPS-LED._________
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Scale 1:87 model car (Goggomobil TL Transporter), labelled "Hessische Eichdirektion", translated: "Hessian Calibrating Department", a German federal authority. The "Eichdirektion" is a public institution that still exists. Back then (the Goggo was built 1957-65), clercs drove around in such cars, in order to control and calibrate measuring and weighing devices in bakeries, butcher shops etc.
The car is placed on a - calibrated, I swear! - wooden ruler whose inscription pleads for "more safety in road traffic".
Model car and ruler are from the 80s.
Happy Macro Monday, have a nice week - and drive safe !!!
Lens: Kilfitt Makro-Kilar 1:2,8/40mm @f/22 - I really fell in love immediately with this lens. Btw: It was, back in 1954, the world's first macro lens with a range from 1:1 to infinity.
#MacroMondays #Red
1 stack of 35 60s images, Canon 800D at ISO 800, Canon 400mm f5.6 lens at f6.3, iOptron Skyguider Pro tracker. 50 darks, 120 biases. Processed in PixInsight as below
***** Integration
lightvortexastronomy tutorial (www.lightvortexastronomy.com/tutorial-pre-processing-cali...)
* CC defect list + master dark (sigma = 8)
15*(1-(FWHM-FWHMMin)/(FWHMMax-FWHMMin))
+ 35*(1-(Eccentricity-EccentricityMin)/(EccentricityMax-EccentricityMin))
+ 20*(SNRWeight-SNRWeightMin)/(SNRWeightMax-SNRWeightMin)
+ 30
img 0713 ref
* ESD integration
* drizzle integration, circular kernel, area containing the galaxies
*****Linear processing
*** Initial
* Crop
* DBE tolerance 3, manually placed points outside the dust clouds
* CC using a dust cloud as background, background ref upper limit 0.0025
*** Denoise
Using jonrista.com/the-astrophotographers-guide/pixinsights/eff... as implemented by EZSuite.
* TGV edge protection 5e-5, default MMT
***** Nonlinear processing
*** Initial stretch
* MaskedStretch
* extract luminance, histo stretch shadows 0.06 mids 0.02, use as mask
* range mask 0.3, smoothness 9, apply, boost saturation
* ACDNR: create star mask (save, will use later), curves boost, dilate x 2 convolve x2, apply to main image. ACDNR on chrominance only, w/ lightness mask, 4 stdev 6 iterations
*** Colors
* CC with white ref upper limit 1 and background ref upper limit 0.2
* invert, SNCR green 0.8 to fix magenta background hue, invert again
* SNCR green 0.8
*** Stars
* Using a copy of the star mask, reduce using EZReduce, morphological transformation
* extract luminance, curve to get white stars and dark background, use as mask, unsharpmask 0.7
*** Other processing
* break down image in starless and stars, erase dust marks from starless, sum starless and stars back to the old image
* Duplicate, LHE kernel 512 contrast limit 1.5, slight contrast curve in RGB/K and sat boost, 0.5 blend with original
* denoise using jonrista.com/the-astrophotographers-guide/pixinsights/eff... as implemented by EZSuite. TGV edge protection 2e-2, default MMT
* MMT sharpen 6 layers biases 0.025 0.5 0.025 0.025 0.012 0.005
Received my BenQ SW270C monitor today. Which has hardware calibration build in. I can definitely tell a difference when viewing on my LG27UL600 monitor. Event though, they are both calibrated. The whites on the BenQ are so much cleaner.
I know everyone likes to say from the sublime to the ridiculous, these images have some good starts that lead to the ridlime and on to the subdiculous.
These were meant to be test pictures just for me to calibrate my settings and work towards betters pictures. By accident I discovered a horrifying edit. The Full Spectrum Sensor captures here are with a sharp accurate modern Sony Zeiss lens having the aid of an IR Cut and Aerochrome Tone Filters. I know the colours in the light as seen here and can gain an insight on the very new to me Digital Full Spectrum photography. Beyond that I thought a few people might wish to see me full of fever and in the swirling midst of strange responses to wavelength, tone and manipulation? The exacting nature of the Full Spectrum images offers insight into several aspects of photography. I can see my skin showing scratches with the areas that I am rubbing taking on dark tones in some edits. The stone work renders the most recent hewn pieces differently to the old. With careful adjustments there could be dyes and different surfaces ready to reveal more detail and design even to illustrate modern repairs and untimely traces of chemicals.
These pictures are taken with a Full Spectrum Camera.
The wavelengths visible to other than human eyes can be explored with a Full Spectrum Camera. My friend who loaned me this camera and a set of lenses and filters describes the experience of dogs that cannot easily discern between a red ball and the green of the grass on which it sits.
A Full Spectrum Digital Camera is often a modified camera that can record light beyond the human visible spectrum. By capturing ultraviolet (UV) and infrared (IR) light the images reveal a now visible representation of the sight given in the wider wavelengths. This can be achieved by removing the built-in UV/IR cut filter found in standard cameras, this allows for a wider range of light to reach the sensor and to be recorded in a manner visible to the human eye. With the addition of either external filters to the lens, or clip in to the sensor, photographers can choose to block certain wavelengths. These additional filters can be used to isolate ultraviolet UV, infrared IR, or human visible light to achieve specific effects that include using the camera for lowlight photography.
I can photograph a wide spectrum,
I can photograph a wide spectrum,
photograph it fully all electrum,
also use some delicate filtration
and edit with plenty of adaptation,
Electromagnetic radiation,
in flowing optical variation
sensed differently by all living beings
and also further seen by some ma-chi-nes
from before the dawn of Ultraviolet
to far beyond Infrared at sunset
Isaac Newton observed Purple and Indigo,
With Blue and Green, and Yellow too,
With Orange and Red
That is what he said,
Yet some today say his Blue was Cyan
And now the spectrum transfers, without division
It does not precisely fit a divine plan
There is more to light than is in our vision
We are always watching and comprehending the phenomenon
And some also maybe listening to this rather flawed failed song…
© PHH Sykes 2025
phhsykes@gmail.com
5X209 /UPS209
UPS
PHL
PHILADELPHIA
CGN
COLOGNE
AIRCRAFT TYPE(B763)
Boeing 767-34AF(ER)
REGISTRATION
N306UP
SERIAL NUMBER (MSN)
27759
AGE (JUL 1996)
24 years
CALIBRATED ALTITUDE
34,950 ft
GPS ALTITUDE
TRACK
106°
GROUND SPEED
567 mph
SQUAWK
1151
LATITUDE
53.5086
LONGITUDE
-1.0147
Since this year we have a snow sensor prototype installed here at South Pole. It is measuring its distance to the snow. From time to time it has to be calibrated and so we just measured the distance by ourselves.
I had this open in Lightroom with an external monitor connected to my laptop so that I could see the difference in colors, brightness, etc. The colors of this photo on my laptop are much less saturated, while the colors on my other monitor are more vivid and golden. Such a big difference. :\
I ended up making hardly any edits to this...just some subtle vignetting for a more "closed in" feel and a bit of split toning. I liked how it looked sooc anyway.
Day 301/365
Camera: QSI583wsg
Optics: C14 + Optec F7 telecompressor
Mount: Astro-Physics AP1200 GTOCP3
Guiding: C14 via integrated QSI OAG using PHD2
Capture: SGP
L=14x600s; RGB=14x300s each. All bin 2x2, calibrated with darks, flats & flatdarks.
Processing: Calibrated, aligned, stacked and post processing using ImagesPlus IP6.5, and Registar
Playtime
Dropping away, this F-15E is about to begin several high speed Mach runs to calibrate the aircraft for testing. These photos were shot 18 years ago.
NGC 3184 is a striking face on spiral galaxy in the constellation Ursa Major. It is measured to be about the same size as the more famous M101 Pinwheel galaxy but is almost twice the distance at around 36 million light years.
7.5 hours of Luminance captured with an Altair Astro 6" RC & Atik 460ex. Calibrated and combined in Pixinsight & processed in CS5.
Taken in Gloucester on a glorious day when the young were out with the adults.Like all young this one was demanding food from the adults.
Updated picture because monitor needed calibrating
The Jupiter Gauss Rifle is an enormously cumbersome piece of equipment, even for heavy frames like the ST-07S. But if there's one thing those egg heads in R&D love to do, it’s trying to make big things fit in your pocket, and that's where the Calisto comes in...
To compensate for the weapon's shorter length, the Calisto utilizes special rounds with their own charged superconductor coil. This duel magnetic field between barrel and bullet causes the slugs to exit at supersonic speeds that can pass through targets with ease. Anything in the vicinity of the projectile path will also be hit by an intense shockwave, requiring sensor systems to briefly re-calibrate.
Special Thanks:
-SuspendedAnimation- for the frame
Greg Strom for the gun
Brigador for the fluff
and AT Votoms for making me love mechas 30+ years ago
This is just a single 6 minute sub of M43 taken remotely from New Mexico with iTelescope T3. Although it was a calibrated sub, it had quite a few hot pixels and there were 4 exhaust plumes of a jet passing through it.
I used Cosmetic correction in PixInsight to tidy the hot pixels then Clone Stamp for the jet trails to good effect.
Messier 43 is the emission nebula just above the dark nebula in the centre of the image. It comprises hydrogen gas excited by the central hot star which is emitting large amounts of UV light - this makes the hydrogen glow red/pink at 656.4nm.
There is a suggestion of young stars igniting in the dark nebula near the centre top of the image with orange/red light peeking through the dark cloud.
Sunrise over a Field of Goldenrod is a photograph taken on the Skyline Trail in North Park, PA. I'm not on my normal machine with a calibrated monitor, but I wanted to get at least one of these uploaded this morning. Have a good Friday, everyone.
C-GNVC - Canadair CRJ-200ER - NavCanada -
doing calibration work at Hamilton International Airport (YHM)
c/n 7519 - built in 2001 for Atlantic Coast Airlines -
acquired by NavCanada in 2006 and modified as calibrator aircraft.
Re-painted into a new colour scheme
© Leanne Boulton, All Rights Reserved
Candid street photography from Glasgow, Scotland. I simply can't resist adding another shot to my ongoing 'pink and blue' album, especially when it has both colours. Colour calibrated with the Xrite Colorchecker Passport in the same light conditions. Enjoy!
Camera: QSI583wsg
Optics: C14 + Optec F7 telecompressor
Mount: Astro-Physics AP1200 GTOCP3
Guiding: C14 via integrated QSI OAG using PHD2
Capture: SGP
L=17x600s; Ha=12x900s; R=19x300s; B=21x300s; G=13x300s each. All bin 2x2, calibrated with darks, flats & flatdarks.
Processing: Calibrated, aligned, stacked and post processing using ImagesPlus IP6.5, and Registar
Integration 6.2 hours. Flats,bias,darks calibrated. 2600 Duo and Astrotech EDP 65. AM5 mount, ASIAIR Plus for guidance. Data gathered 7/24-7025 in Bortle 3.5 skies.
Hello? Is anyone there? Struggling hard to solve the focus-shift challenges of the MS-Optical 50mm f/1.1 Sonnetar, a handmade superspeed lens from Japan. Wide open, you get color fringing something fierce, and getting the thing calibrated against my rangefinders has proven remarkably hard. At the same time, I suspect it may be worth it if I can just...get...it...right.
The ice surrounding an abstract sculpture at the Water Pollution Control Laboratory next to Cathedral Park in Portland OR.
Having a nightmare calibrating my screen (first time i've tried). Wondering how this looks to others? I won't say how it looks to me so I don't influence comments but if you wouldn't mind commenting on how it looks on your screen I'd be really appreciative.
Thanks in advance!
Bronica EC - Nikkor O.C 50/2.8 - Fuji Provia 100F - ScanView ScanMate 5000 - IT8 Calibrated - Revelado Interphoto
Camera: QSI583wsg
Optics: TSAPO100Q
Mount: Astro-Physics AP1200 GTOCP3
Guiding: TSAPO100Q via integrated QSI OAG using PHD2
Capture: SGP
RGB=16x300s each, Ha=16x900s. All bin 1x1, calibrated with darks, flats & flatdarks.
Processing: Calibrated, aligned, stacked and post processing using ImagesPlus IP6.5, Registar
Didn't quite do the processing right - still some strange background gradients I haven't quite managed to remove
27 lights, Canon 800D at ISO 800, Samyang 16mm at f2.8, 1 minute exposures, Omegon Lx2 tracking mount. 30 darks, 120 biases. Processed in PixInsight as below
*****Linear processing
*** Integration:
lightvortexastronomy tutorial (www.lightvortexastronomy.com/tutorial-pre-processing-cali...),
(15*(1-(FWHM-FWHMMin)/(FWHMMax-FWHMMin)) + 15*(1-(Eccentricity-EccentricityMin)/(EccentricityMax-EccentricityMin)) + 20*(SNRWeight-SNRWeightMin)/(SNRWeightMax-SNRWeightMin))+50 - use #775 as ref
*** Crop
*** Background extraction:
DBE tolerance 3, no points placed on the Milky Way
***Deconvolution
Created star mask for larger stars - large scale structure 2, small scale 1, noise threshold 0.1, scale 6,
Extracted luminance, STF autostretched, then histod shadows 0.2 midtones 0.28 highs 1 to get a range mask
Deconvolve with range mask on, 80 interations, custom PSF, dark 0.01 bright 0.004, local deringing with star mask, wavelet regularization
*** Color calibration
SNCR applied with range mask on (inverted) to protect nebulas
Background neutralization
Color calibration
*** Star reduction (for small and mid stars)
Small star mask - noise 0.15, scale 4, small scale 3 comp 1, smoothness 8, binarize, midtones = 0.02
Range mask from that, 0.05-1
Apply, erosion operator 4 iterations 0.15
*** Linear noise reduction
jonrista.com/the-astrophotographers-guide/pixinsights/eff...
*TGV - small noise
Created TGV masks - extracted luminosity, standard stretch (tgv_luma_mask), curved it with black point at ~0.2 and white at ~0.5, moved histogram point to middle (tgv_mask)
apply tgv mask inverted to the image, give luma mask as local support
TGV chroma str 7 edge protection 2E-4 smoothness 2 iterations 500
TGV luma str 5 edge protection 1E-5 smoothness 2 iterations 500
*MMT - larger noise and TGV artifacts
Created MMT mask - extract luminosity, standard stretch, move histogram point to 75%, apply low range -0.5. Apply inverted
MMT mask - 8 layers, threshold 10 10 7 5 5 2.5 2 2 on rgb
*****Nonlinear
***Initial stretch
*Autostretch, apply to hist
*Create full star mask, max(star_mask_large, star_mask_small)
* HDR transform, 8 layers, B3 spline, star mask applied inverted, preserve hue, lightness mask
***MLT stretch
**Initial
* created a new multiscale linear transform, kept 4 layers using linear interpolation
* diffed from original image to create a "blurred" version of original image
* extracted luminance from original, used as mask on blurred version
* used curves to create s shape in luminance and saturation, inflection 3/4 up
* pixelmath sum the 3, rescaled, back to original image
**Second
* new multiscale linear transform, keep 5 layers
* diff from original
* extract luminance from blurred image, to use as a mask
* masked blurred image with its own luminance, gave it s-shaped RGB curve, slight boost in luminosity, big boost in saturation
* pixelmath sum the 3, rescaled, back to original image
**Third
* new multiscale linear transform, keep 8 layers
* diff from original
* extract luminance from blurred image, to use as a mask, hist stretch it (multi_8_substracted_L)
* luminosity increase (1 curve), saturation (even more)
* pixelmath sum the 3, rescaled, back to original image
*** Darken
* DarkStructureEnhancer, 8 layers, 0.7, 3x3
* DarkStructureEnhancer, 8 layers, 0.7, 5x5
*** Color saturation
* bumped reds strongly, green-blues less strong
*** Sharpen
* Sharpen with multiscale linear transform, bias layers 2-6 (0.05, 0.05, 0.025, 0.012, 0.006)
*** Final crop and resize
* rotate 90* clockwise
* crop bottom (slightly weird corner)
* Rescale back to normal
**** Not used
**Create star and bright nebulas mask
* substract star_mask from luma to get a nebula mask
* exagerrate hugely with curve to get high contrast - RGB line going from 25% of horizontal to 50%
* apply said exagerration to stars too
* sum them up in pixelmath, save as star_nebula_mask
* new multiscale linear transform, keep 5 layers
* diff from original
* apply inverted stars_nebula_mask
* Local histogram equalization, kernel 200, contrast 1.5
* Local histogram equalization, kernel 400, contrast 1.5
* Saturate with curves (slight s-shape but mostly nuke
Luminance layer of M101, the Pinwheel Galaxy. This is a stack of 100 subs, each 2 minutes, shot with an ASI183mm and WO GT81 on a Sirius EQ-G Mount. Calibrated with dark frames only.
C-GNVC - Canadair CRJ-200ER - NavCanada -
doing calibration work at Hamilton International Airport (YHM)
c/n 7519 - built in 2001 for Atlantic Coast Airlines -
acquired by NavCanada in 2006 and modified as calibrator aircraft.
Re-painted into a new colour scheme
Bronica EC - Nikkor O.C 50/2.8 - Fuji Provia 100F - ScanView ScanMate 5000 - IT8 Calibrated - Revelado Interphoto
NEWS: I am making my de-vignetting software public, available here. It can be used with other lenses and filters (one has to calibrate them first), and to make HDR images from multiple exposures. Works under Linux or Windows with Cygwin.
My first shot with my new ND110 neutral filter with Sigma 10-20mm lens. I used my own software to calibrate the lens+filter to remove the strong color vignetting inherent to the
filter. This is an HDR photo, made with exposures from 1 to 160 seconds, daytime.
AMS
AMSTERDAM
MSP
MINNEAPOLIS
AIRCRAFT TYPE(B763)
Boeing 767-332(ER)
REGISTRATION
N182DN
SERIAL NUMBER (MSN)
25987
AGE (OCT 1992)
28 years
CALIBRATED ALTITUDE
36,000 ft
TRACK
260°
GROUND SPEED
475 mph
Bronica EC - Nikkor O.C 50/2.8 - Fuji Provia 100F - ScanView ScanMate 5000 - IT8 Calibrated - Revelado Interphoto
A 50 x 10minute stack of the Pelican Nebula, shot with a Nikon D5300 (modified) and L-enhance filter with an Astrotech AT65EDQ telescope on a Sirius EQ-G mount. Calibrated, stacked, and mostly edited in PixInsight with final touches in Photoshop.
Bronica EC - Nikkor O.C 50/2.8 - Fuji Provia 100F - ScanView ScanMate 5000 - IT8 Calibrated - Revelado Interphoto
Data acquired on 2013-09-13
Image details:
23x300s ISO800
Calibrated with dark, flat, and bias frames
Equipment:
Vixen ED80sf 80mm APO refractor
Celestron CG-5 ASGT mount
Orion SSAG autoguider + 50mm guide scope
Canon T2i 550D DSLR (Baader IR modded)
Orion Field Flattener
Software:
Image acquisition with BackyardEOS
Guiding with PHD
Calibration/alignment/integration and post-processing with PixInsight