View allAll Photos Tagged Subframing
Used my 6" f7 apo triplet and DSLR with UHC filter to capture 5 subframes at 15 minutes each. Stacked and darkframe (7) calibrated in Deepskystacker and processed in Photoshop.
Image taken early hours 6/11/16
This is a small part of the Rho Ophiuci complex, a nice zone of the sky toward the center of our Milky Way galaxy. Within the image you could see dark nebula, dust clouds, star-forming regions and part of the reflection nebula IC 4603 (blue, to the left). Nefertiti's head or a dark angel, whatever you think of the silouette, has also interesting views rotating the image. TEC 140 refractor scope, camera Sbig STF8300-AO/8, 7.5 hours in LRGB exposure, 12 min subframes, from my backyard obs at La Colonia, Illapel, Chile.
Esta imagen es una pequeña parte del complejo nebular cercano a la estrella Rho Ophiuci,hacia el centro de nuestra galaxia la Vía Láctea. En ella se pueden ver nebulosas oscuras, nubes de polvo interestelar, regiones de formación estelar, y parte de la nebulosa de reflección azul IC 4603 a la izquierda. La cabeza de Nefertiti, o un ángel negro, o lo que Ud. vea en la silueta, ofrece también vistas interesantes al rotar la imagen. Telescopio refractor TEC 140, cámara Sbig STF8300-AO/8, 7.5 horas acumuladas en LRGB, subframes de 12 minutos, desde mi observatorio casero en La Colonia, Illapel, Chile. Saludos y comentarios bienvenidos...
Scope: WO Zenith Star 81mm f/6.9 with WO 6AIII Flattener/Focal Reducer x0.8
OSC Camera: ZWO ASI 2600 MC Pro at 100 Gain and 50 Offset
Mount: iOptron GEM28-EC
Guider: ZWO Off-Axis Guider
Guide Camera: ZWO ASI 174mm mini
Light Pollution Filter: Chroma LoGlow Broadband
Date: 14, 18 February 2023
Location: Washington D.C.
Exposure: 81x300s subs (= 6.75 hours)
Software: Pixinsight
Processing Steps:
Preprocessing: FITS data > Image Calibration > Cosmetic Correction > Subframe Selector > Debayer > Select Reference Star and Star Align > Image Integration.
Linear Postprocessing: Dynamic Crop > Dynamic Background Extractor (subtraction to remove light pollution gradients and division for flat field corrections) > Background Neutralization > Color Calibration > Blur Xterminator > Noise Xterminator.
Nonlinear Postprocessing: Histogram Transformation > Star Xterminator to decompose into Starless and Stars Only images.
Starless image > Histogram Transformation > Noise Xterminator > Local Histogram Equalization.
Apply a First Curves Transformation as appropriate to boost the blue signal from the galaxy's arms. Apply an RGB Split. After adjusting the weights for the individual RGB components (noting that the R serves as both the L channel and the red channel when using an OSC camera), apply LRGB Combination to get a blue boosted image.
Apply a Second Curves Transformation as appropriate to boost the red signal from the galaxy's core. Apply an RGB Split. After adjusting the weights for the individual RGB components (noting that the R serves as both the L channel and the red channel when using an OSC camera), apply LRGB Combination to get a red boosted image.
Use Pixel Math to combine 0.5 x red boosted image + 0.5 x blue boosted image to get a Composite image.
Use Pixel math again to combine 0.75 x Composite image + 0.25 x an HDR Multiscale Transform-modified Composite image to get a New Composite image.
Process the New Composite image with Curves Transformation using color masks.
Apply Histogram Transformation and Local Histogram Equalization to get a Final Starless image.
Use Pixel Math to rejoin the Final Starless image with the Stars Only image (modified by a Morphological Transformation if needed) to get a rejoined image.
Rejoined image > Topaz Labs > DeNoise AI > Gigapixel AI.
Use Pixel Math to combine 0.25 x non-AI Composite + 0.75 x Gigapixel AI = Final Result.
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"Caldwell 38 is nicknamed the Needle galaxy, because in most telescopes it looks as thin and sharp as a pin. It is a spiral galaxy, but because it is seen almost perfectly edge-on, its spiral structure is concealed." science.nasa.gov/mission/hubble/science/explore-the-night...
I've seen the "Heart of the Heart" a million times so I figured I'd join the crowd. Actually this was a test- I've never tried to bin subframes in any setting other than 2x2. This was shot at 4x4.
Since I was able to image 3 times this week(a 1st in almost 2 years) I chose something familiar for my "binning" test, IC 1805, the Heart Nebula in the constellation of Cassiopeia.
Shot on 9/25 & 9/26/14 with a Celestron 11" EdgeHD @ F/7 and a QHY23M
RGB-10 subs each color filter/ 2 minutes each, 1hour total,4x4 binning
Ha,OIII,SII-10 subs each filter/5 minutes each,2.5 hours total, 4x4 binning
Shot in the forum, where the light cuts clean and the silence feels staged. Double subframing and rimlight give the scene its edge. Black and white street photography turns a brief encounter into urban solitude.
The great nebula in Orion captured on 1-29-2017 from the General Nathan Twinning Observatory (GNTO) in Belen, New Mexico using an AT65 apo refractor, an SBIG ST4000XCM camera and a Losmandy G11 mount. Exposures were:
15 x 10"
15 x 1'
12 x 10'
Subframes were combined and processed using Pixinsight. Final tweaks made using Photoshop CS2.
Two symbols
© All rights reserved.
This image is copyrighted. Please do not use, or post to blogs and other sites without my permission.
A collage utilizing both H-alpha and CaK imaging of our Sun. Subframe positions is "artistic" and does not represent correct orientation compared to Sun - all images are however taken by me excluding the Apollo era (free) picture of Earth showing approximate scale. Pictures taken in southern Finland during summers of 2016 and 2017 as I haven't had time to image at all lately.
See www.flickr.com/photos/130947324@N08/46483974944/ for labels.
Recorded with BW ASI178mm camera, colors added in post production. H-alpha images colored to red and yellow and they are partially inverted to pop out surface details, protuberances and filaments. CaK is colored to blue to mimic imaging bandwidth for CaK.
H-alpha: 656.28 nm (deep red in reality) hydrogen line. Tunable wavelength. Exposure times around 2 ms.
CaK: About 8 nm wide bandpass at the Calcium II K-Line centered around 395 nm (ultraviolet). Exposure time of about 0.8 ms.
Prefilter: Baader D-ERF (with H-alpha), Baader AstroSolar film (with CaK)
Scope: TS Express 80/480 mm FPL53 APO
Filter: Daystar Quark or Baader CaK
Camera: ASI 178mm with 0.5x reducer
DIY Arduino based focuser motor control
Mount: Celestron AVX (equatorial mount), StarAdventurer
Software: FireCapture, SharpCap, Autostakkert!, ImPPG and Photoshop CC.
Typically stacked a best few percents of 5000 images to create each of the separate photos. Full disk H-alpha sun is a composite of several sub images. I roughly estimated that I collected about 180 000 frames and 775 GB of uncompressed AVI video as raw material. Final stacked image number should be close to 4000 in that composite.
I started exposing this image at 11:05 PM last night and finished at 2:46 AM this morning. Even though that was about 3 hours and 40 minutes there were a few dropped frames and processing time which reduced actually exposure time to 2 hours divided into 10 second subframes. Below is a screenshot depicting a step in post-processing.
Celestron C8 SCT with Starizona Hyperstar F/1.9 ZWO ASI 294MC Pro, Optolong L-eXtreme filter, ASIAir tracking and capturing on SW EQ6-R Pro
8 hours and 14 minutes total integration,
247 x 120sec subframes
ASI294MC Pro gain 120
Preprocessed in SIRIL and processed in PixInsight final tweaks in Photoshop and Topaz
Abell 1367
Leo Galaxy Cluster
The Leo Cluster (Abell 1367) is a galaxy cluster about 330 million light-years distant in the constellation Leo, with at least 70 major galaxies. The elliptical galaxy known as NGC 3842 is the brightest member of this cluster. This is seen to the left and slightly upward of the center of the image. Along with the Coma Cluster, the Leo cluster is one of the two major clusters comprising the Coma Supercluster, which in turn is part of the CfA2 Great Wall, an immense galaxy filament which is hundreds of millions of light years long and is one of the largest known structures in the universe. The “CfA” designation refers to “Center for Astrophysics” redshift survey and was an attempt to map the large scale structure of the universe. CfA2 was the second survey started in 1985 and the Great Wall was discovered in 1989
The Leo Cluster mostly contains spiral galaxies, suggesting that it is much younger than other comparable clusters, such as the Coma Cluster. It is also home to one of the universe's largest known black holes, which lies in the center of NGC 3842. The black hole is 9.7 billion times more massive than our sun. (Wikipedia)
Capture info:
Location: Orion’s Belt Remote Observatory, Mayhill NM
Telescope: Takahashi ED180
Mount: Paramount MX+
Camera: SBIG STXL 16200
Data: LRGB 2.5,2,2,2.5 hrs (5min subframes)
Processing: Pixinsight
Manufacturer: Auto Union AG, Zwickau - Germany
Type: Meisterklasse F5-700 Cabrio-Limousine
Engine: 692cc 2 cylinder 2-stroke
Power: 30 bhp
Speed: 85 km/h
Production time: 1935 - 1936
Production outlet: 16,154
Curb weight: 840 kg
Special:
- The DKW F-Series (F= Frontantrieb / front-wheel drive) is divided into 5 classes: Reichsklasse, Meisterklasse, Front Zweisitzer, Front Luxus Cabriolet and Front Luxus Sport.
- A subframe (produced at the DKW-factory at Zwickau) was mounted on a central box frame, covered with artificial leather (produced at the AUDI-factory at Berlin-Spandau).
- Three speed gearbox.
Addet to the gallery www.flickr.com/photos/75141663@N05/galleries/721576331417...
Added to the gallery www.flickr.com/photos/stevepoe/galleries/72157637866264836
This is a stacked photograph showing M81, M82 and NGC3077 all in the constellation Ursa Major. Also present in M82 is supernova SN2014J. This is from collected data over the last 30+ days, 123 subframes of various exposure lengths and ISO settings, total image time 3 Hours and 17 Minutes. Images were all taken with a Canon T4i and 400mm Canon lens mounted on an iOptron ZEQ25GT mount, no telescope was used.
1991 Rover Metro 1.1 C 3-door.
Supplied by Mann Egerton of King's Lynn.
Last MoT test expired in March 2020 (SORN).
It failed a test that month -
Rear subframe mounting prescribed area fractured significantly reducing structural strength subframe has crack in the middle (5.3.6 (a) (i)) - Major
Rear brakes imbalanced across an axle axle 2 (1.2.1 (b) (i)) - Major
IC434 in Orion constellation . Taken from my backyard at Tiny Twp. Canada with Askar 185APO refractor and ASI533MC OSC camera . Poor data from one session stack of 30 subs 120 sec each . No H@ added yet . Thanks for looking .I hope next year I'll collect more subframes data. Thanks for looking .
This lenticular galaxy are located about 80 million lightyears away in the Hydra constellation, visually near M83. At the top of the frame there is a big star (7.7 Magnitude) that has been masked in order to not pay attention to it, because there are hundreds of tiny galaxies disposed in chains, groups, lines, and patterns around all the field of view. Maybe I will make a bigger effort to get a more beautiful image with a much more expensive optics (and bigger telescope) and from a darker sky, but for me today it's ok from my backyard -suburban skies'- observatory and affortable taiwanese scope.
LRGB 8 hours, GSO RC 30 cms, STF8300-AO/8. 12 min subframes. Poor seeing. Process in basic Photoshop. Comments welcome...
La galaxia lenticular NGC5078 a unos 80 millones de años luz, en la constelación de Hydra, cerca visualmente de M83. Arriba en el borde de la foto hay una estrella enorme (visualmente magnitud 7.7) que ha sido enmascarada para no ponerle atención, ya que hay cientos de pequeñas galaxias distribuidas en cadenas, agrupaciones y linealmente por todo el campo visual. Tal vez en el futuro haré otro esfuerzo mayor con esta fotografía empleando un telescopio mucho más caro y grande y tomándola desde un cielo oscuro, pero para mí está bien por ahora desde mi observatorio casero con cielos sólo suburbanos y usando un telescopio baratito taiwanés.
Exposición LRGB 8 hrs total, 12 minutos subframes, GSO RC 30 cms, cámara STF8300/AO-8.
Seeing pobre. Procesado básico en Photoshop solamente.
Comentarios bienvenidos...
Quick stack of 12 subframes , 30 sec each and processing in PI .
Taken on Oct 27 ,2025 from my backyard in Tiny Twp. Canada
British Museum, London. British Museum, London. 3 of 4 in my first series shot as such..."Pillar To Past"
This spectral shadowy figure is in fact the Cone Nebula that sits atop the Christmas tree nebula when viewed upside down. It looks more like a figure peering at the stars in the distance than a dark region where new stars have cleared pathways as they form.
This is a stack of ten ten-minute subframes in H Alpha.
Peter
1998 BMW 318is coupe.
Supplied by Stephen James (BMW).
Scrapped on 17th September 2022 (last MoT test expired on 15th September 2022).
It failed a test on 30th August 2022 -
Nearside rear subframe mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) - Major
Windscreen washer provides insufficient washer liquid (3.5 (a)) - Major
Offside rear subframe mounting prescribed area excessively corroded significantly reducing structural strength (5.3.6 (a) (i)) - Major
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
* Temperature 11 degrees C.
* Total exposure time: 10 minutes.
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Description:
The centre of our home galaxy, the Milky Way, lies in the constellation Sagittarius, which in the northern hemisphere summer lies low in the south at midnight.
In this view appear many favourite targets of amateur astronomers with modest telescopes, including the large glowing Lagoon Nebula at the right side.
For a version of this photo WITH LABELS, click on your screen to the RIGHT of the photo, or click here:
www.flickr.com/photos/97587627@N06/27443670463
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Technical information:
Nikkor AF-S 70 - 200 mm f/2.8 G ED VRII lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Ten stacked frames; each frame:
140 mm focal length
ISO 5000; 1 minute exposure at f/4.5; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (brightness, contrast, levels, colour balance, colour desaturation)
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1997 Vauxhall Corsa 1.2 LS 3-door.
In present ownership since November 1999.
Tax expired on 26th October 2022 and the last MoT test expired on 10th November 2022.
It failed a test on 13th October 2022 -
Oil leaking continuously from engine posing a serious risk to road safety (8.4.1 (a) (ii)) - Dangerous
Offside front position lamp not working (4.2.1 (a) (ii)) - Major
Nearside rear subframe mounting prescribed area excessively corroded significantly reducing structural strength inner wheel arch (5.3.6 (a) (i)) - Major
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
* Altitude of M22 at time of exposures: 15°, decreasing to 14°
* Altitude of M13 at time of exposures: 37°, decreasing to 34°
Temperature 13° C.
* Total exposure time: 6 minutes for M22
* Total exposure time: 7 minutes for M13
* 1200 mm focal length telescope
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Description:
These are two of the largest and brightest globular star clusters visible from the northern hemisphere. M22 in the constellation Sagittarius is brighter and larger than M13 in Hercules, at least as seen from our solar system (it is actually smaller than M13, but M13 is almost 2.5 times as far away from us and has four times as many stars as M22). But because M22 is so far south in the sky, and is in an area that is strewn with other magnificent clusters and bright nebulae, it does not receive nearly the attention that the more northerly, but smaller and fainter, M13 does.
Globular star clusters are dense mainly spherical agglomerations of stars that are gravitationally bound together. They are found in the halos of the galaxies in which they are located, and are among the most ancient structures in the 13.8-billion-year-old universe.
In this view these two star clusters are shown to exactly the same scale. The subframes comprising each of the final images were made on the same evening, within an hour of each other.
Because M22 was extremely low in the sky when I captured the exposures that make up this image, atmospheric turbulence made the stars images move around a lot and turned the stars into small blobs rather than the more pinpoint star images in M13, which was much higher is the sky.
About M22, from Wikipedia:
"Messier 22 ... is an elliptical globular cluster in the constellation Sagittarius, near the Galactic bulge region. It is one of the brightest globulars that is visible in the night sky.
M22 was one of the first globulars to be discovered, on August 26, 1665 by Abraham Ihle and it was included in Charles Messier's catalog of comet-like objects on June 5, 1764. It was one of the first globular clusters to be carefully studied first by Harlow Shapley in 1930. He discovered roughly 70,000 stars and found it had a dense core.
M22 is one of the nearer globular clusters to Earth at a distance of about 10,600 light-years away. It spans ... 99 ± 9 light-years [in diameter]. 32 variable stars have been recorded in M22.
Despite its relative proximity to us, this metal-poor cluster's light is limited by dust extinction, giving it an apparent magnitude of 5.5 making it the brightest globular cluster visible from mid-northern latitudes ... However, due to its southerly declination, M22 never rises high in the sky and so appears less impressive to northern hemisphere observers than other summer sky globulars such as M13 and M5.."
About M13, from Wikipedia:
Messier 13 ..., sometimes called the Great Globular Cluster in Hercules ..., is a globular cluster of about 300,000 stars in the constellation of Hercules. ... M13 was discovered by Edmond Halley in 1714, and catalogued by Charles Messier on June 1, 1764.
M13 is about 145 light-years in diameter, and ... is 25,100 light-years away from Earth.
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Nikon D810a camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Multiple stacked subframes; each frame:
ISO 3200 for M22, and ISO 2500 for M13; 1 minute exposure at f/8
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance, sharpening)
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Merviller, France
Der Bahnhof in dem kleinen Dorf hat keine Gleise mehr, die Schule keine Schüler und viele Häuser stehen leer.
A late model Coupe which is the non-turbo model registered on the final day of 1999.
Fun fact about this car, it has failed every single MOT since 2006, or at least that far that records are kept online. Usual wear and tear items it must be said. The last MOT required front subframe welding to pass. But manages to still secure loving faithfull ownership, and now has over 140,000 miles on the clock. I really like these, definite future classic.
For those who have met Nic and seen his previous 240 in person, you'll know that it was way different from all of the other cars out there in the scene today. It wasn't perfect but there was just something totally raw about it that everyone loved. Not to mention the fact that he was extremely low...and static. His new 240 coupe isnt any different. It still had the same raw feel that most cars fail to have. As I sat in the passenger seat, you could feel and hear the scraping of his subframe as we cruised around town looking for a shooting spot. As the car scraped we both would gasp from the harsh metal sound but at the same time couldn't help but to laugh at how crazy it was. It was just a fun car to be in. Nic himself is an awesome kid and I believe everyone should get a chance to meet him. He is on a whole other level and we definitely need more kids like him around the "scene".
For this shoot, I decided to try out something different. Instead of just shooting a car rigged up or parked in front of something cool with blasts of strobes, I wanted to include the driver and his local town to create a "real image" and tell a story. I used only natural lighting to get a "real" feel to it.
Nic sparking it up: www.youtube.com/watch?v=fUw4zJjg8fQ
Manufacturer: Carossiers Hermann Graber, Whichtrack (near Bern) - Switzerland
Type: W153 Graber Kabriolett
Engine: 2289cc straight-6
Power: 55 bhp / 3600 rpm
Speed: 116 km/h
Production time: 1939
Production outlet: 1 (one)
Curb weight: 1350 kg
Special:
- This two door, four seat convertible is special made on a MB W153 rolling chassis with a x-shaped oval tube subframe.
- Graber always called his convertibles "Kabriolett".
- The straight-6 had two twin chamber Solex 30 JFFK carburettors and a four speed manual transmission.
- Graber was very famous at that time. They also built convertibles for Bugatti, Rolls-Royce, Bentley and even for Duesenberg.
- Bodywork Builder Park Ward (England) built Graber bodies under license.