View allAll Photos Tagged Subframing
NGC 1999 is the reflection nebula at centre right and it is just south of the Orion nebula which is off the right hand edge
of the frame.
This is an integration of 18 hours total exposure shot in multiple 180s and 240s subframes on a QHY168C camera. The scope was a WO Zenithstar 103. Image capture was managed with SGP and PHD2, post-processing was done in PixInsight.
Observed from Prachinburi, Thailand
Description: This is my image of the Andromeda Galaxy M31 based on about 15 hours of total exposure time. The angular size of M31 is a huge 178x63 arcminutes which occupies a significant portion of the APS-C sensor of my camera. Since there are also numerous background stars, finding a relatively star-free area to do a Background Neutralization is a bit of a challenge. I also found achieving a proper color balance to be another challenge. Various sources indicate the presence of an outer bluish halo encompassing the core. I tried to achieve my objective by applying a series of Curves Transformations while protecting the background with a mask. As a side note, while numerous stars are present, I decided against applying a Morphological Transformation to reduce their brightness because in doing so I detected an undesirable ringing effect. One possible solution is to apply Multiscale Linear Transform with deringing selected. However, I have not tested that option.
Date / Location: 21-23 September and 8-10 October 2022 / Washington D.C.
Equipment:
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
Mount: iOptron GEM28-EC
Guide Scope: WO 50mm Uniguide Scope
Guide Camera: ZWO ASI 290mm
Focuser: ZWO EAF
Light Pollution Filter: Chroma LoGlow Broadband
Processing Software: Pixinsight
Processing Steps:
Preprocessing: I preprocessed 184x300s subs (= 15.3 hours) in Pixinsight to get an integrated image using the following steps: Image Calibration > Cosmetic Correction > Subframe Selector > Debayer > Select Reference Star and Star Align > Image Integration.
Linear Postprocessing: Rotation > Dynamic Crop > Dynamic Background Extractor (subtraction to remove light pollution gradients and division for flat field corrections) > Background Neutralization > Color Calibration > Noise Xterminator.
Nonlinear Postprocessing: First Histogram Transformation > Second Histogram Transformation > First Local Histogram Equalization > Second Local Histogram Equalization First Curves Transformation > Second Curves Transformation > Third Curves Transformation > SCNR Noise Reduction.
A shock find on streetview. While prepping for a spotting trip, I thought I'd have a look in a random newbuild estate, just because the streetview had been done pretty recently. To my surprise, this pre-facelift Ulysse was sitting, so I went to go and see it the next day.
Long term ownership and off the road since last year, after failing it's MOT on the dreaded Front Subframe. I'd say it's the end of the road for this rare MPV, but kudos to the owners for keeping it about.
P797 FJA
Merviller, France
Der Bahnhof in dem kleinen Dorf hat keine Gleise mehr, die Schule keine Schüler und viele Häuser stehen leer.
Shot with an STC duo-narrowband filter on a QHY168C OSC camera, this is an integration of 240 x 5 minute subframes. The scope was a WO Zenithstar 103 mounted on a Skywatcher EQ6R Pro. Image capture was managed via SGP and PHD2, all post-processing was carried out in PixInsight.
Observed from Prachinburi, Thailand
Quick stack of 12 subframes , 30 sec each and processing in PI .
Taken on Oct 27 ,2025 from my backyard in Tiny Twp. Canada
Rationalisation at NCS HQ yielded the Modular MQB platform (Modular, Quick-change, Basic) with a common body mated to a wide range of powertrain subframes.
Here we have an MQB body mated to a Sondo-Reata-Nautics Hovercraft platform kit.
(Apologies for the polygons - Blender doesn't like doing those corner pipes in rubber for some reason)
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 00.32 and 00.52 EDT
* Altitude of centre of frame at time of exposures: 44°, increasing to 47°
* Temperature 9° C.
* Total exposure time: 10 minutes
* 1253 mm focal length telescope
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Description:
The constellation Auriga is festooned with open star clusters, three of which (M36, M37 and M38) are listed in Charles Messier's catalogue of non-stellar objects, commonly known as the Messier List.
In the centre of this image is the bright and large cluster M38, which was discovered in 1654, lies about 3,480 light years from our solar system, and is estimated to be about 250 million years old. It is quite bright, at magnitude 7.4, and is a very pretty sight in even a small telescope.
Below M38, near the bottom edge of the frame and just a little right of centre, is the smaller cluster NGC 1907, which is further away (4,500 light years), fainter (magnitude 8.2) and older (~500 million years) than M82.
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@N06/52472161224
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Technical information:
Nikon D810A camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount
Ten stacked subframes; each frame:
ISO 6400; 1 minute exposure at f/8
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, colour balance & saturation, sharpening)
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Rationalisation at NCS HQ yielded the Modular MQB platform (Modular, Quick-change, Basic) with a common body mated to a wide range of powertrain subframes.
Here we have an MQB body mated to Boston Dynamics 4x4 'Iron Horse' Walking platform.
5 x 240s subframes- Testing out what Rho Ophiuchi looks like at 135mm.
Earth & Sky - Mount John University Observatory
Another of my favourite winter objects. This is a stack of twenty-two eight minute subframes in H Alpha from tonight, 7 January 2016.
Peter
Equipment used: Atik460EX camera, HA filter, 0.75 reducer, 130mm triplet APO refractor and EQ8 mount
Stack of the best 42 90 s subframes with an Optolong Luminance filter, taken from 2023-03-25 0526-0721 UT with a Celestron Edge HD 925 at focal length 1530 mm and an Atik 414-EX camera. The position of 2023dbc is indicated with the white line.
This is from my light polluted backyard in Long Beach, CA. I mostly wanted to see if I could image a supernova fainter than magnitude 16 from my backyard. Looks like the answer is yes.
2023dbc is a Type Ic supernova. That means the progenitor had shed both its hydrogen and helium layers before exploding. This means the progenitor would have been a Wolf-Rayet star.
Preprocessing in Nebulosity; registration, stacking, and initial processing in PixInsight; the background of light pollution was knocked down in Photoshop.
This nebula is rich in ionized hidrogen and some interesting dark bands. Telescope GSO RC 30cms, camera STF8300/AO-8, 16min subframes, 5 hours total in Ha-L-RGB composite from my backyard homemade observatory at La Colonia, Illapel, Chile. Take care and have a good day!
Esta nebulosa de emisión ubicada en Puppis es rica en hidrogeno alfa y bandas oscuras. Imagen de 5 horas en Ha-L-RGB, telescopio GSO RC 30cms, camara STF8300/AO8, desde mi observatorio hecho en casa en La Colonia, Illapel, Chile; saludos y cuídense, que tengan un buen día...
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
* Temperature 11° C.
* Total exposure time: 8 minutes.
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Description:
The familiar "W" shape of the bright stars in the constellation Cassiopeia rides high in the northern hemisphere autumn and winter sky, with our home galaxy, the Milky Way, running through it and down into the constellation Perseus.
Many large and bright nebulae (hydrogen gas clouds) appear in this area of the sky, along with numerous gravitationally bound open clusters of stars.
Above centre are the bright red hydrogen gas clouds known as the "Heart" and "Soul' Nebulae. For a close-up view of the Heart Nebula made with a 540 mm focal length telescope on the same evening, click here:
www.flickr.com/photos/97587627@N06/31079231531
For a version of this photo WITH labels, click on the right side of your screen, or click here:
www.flickr.com/photos/97587627@N06/30406597543
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Technical information:
Sigma 50 mm f/1.4 DG HSM ART lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Eight stacked frames; each frame:
50 mm focal length
ISO 2500; 1 minute exposure at f/4; 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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Photographed at Algonquin Provincial Park, Ontario, Canada, between 22.58 and 23.09 EDT
(285 km by road north of Toronto)
* Temperature 17° C.
* Total exposure time: 6 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 lower right.
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@N06/28589630170
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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
Six stacked frames; each frame:
135 mm focal length
ISO 4000; 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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Used my 6" f7 apo triplet refactor and 1000D dslr with light pollution filter to capture 10 subframes at 3 minutes each. Stacked in Nebulosity 4 and processed in Photoshop.
Image taken early hours of 23/10/16
Skywatcher 72ED apo with field flattener,SX Trius 694/filterwheel/OAG (Lodestar) riding on CEM60.
Six 10 minute subframes captured through Ha and OIII filters,stacked in Deepskystacker and colour combined (Ha,OIII,OIII) in Maxim DL4. Processed in Astroart 8 and PS CS2.
Taken 31/10/21
1997 Jaguar XK8 4 Litre auto.
Previously registered J20 AKS, JR 7237, J853 GGP, VOT 92 and P804 UAV.
Last MoT test expired in November 2015 (SORN).
It failed a test that month -
Nearside rear subframe mounting prescribed area is excessively corroded outer sill area (2.4.a.3)
Offside rear subframe mounting prescribed area is excessively corroded outer sill area (2.4.a.3)
Nearside brake pipe excessively corroded front to rear (3.6.b.2c)
Watch out! Fire truck in a hurry to help!
I present to you my version of the fire truck of the 60s. Its distinguishing feature is a nice design, detail, a fairly simple but intricate design and rich functionality.
The machine is equipped with everything necessary, there is a water monitor, hoses, ladder, tool holders, boxes. There are two taps for water supply.
In detail even the bottom, deploying the machine you will notice the imitation of the subframe and the drive system.
Inside you can place a minifigure.
The fire engine blends well with the modular building 10197 and fits in the garage.
Assembled from 322 existing parts.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 00.12 and 00.45 EDT
(285 km by road north of Toronto)
* Altitude of the nebula at time of exposures: 55°, decreasing to 50°
* Temperature 5° C.
* Total exposure time: 15 minutes
* 2483 mm focal length telescope
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Situated in the heart of our Milky Way galaxy as it passes directly overhead during the summer in the northern hemisphere, the Crescent Nebula is a half ring of ionized hydrogen gas, which glows with a characteristic red-pink colour. The nebula has an angular size of 20' x 10', which makes it about 1/3 the apparent size (in area) of the Moon as seen from Earth.
From Wikipedia:
The Crescent Nebula is an emission nebula in the constellation Cygnus, about 5000 light-years away from Earth. It was discovered by Friedrich Wilhelm Herschel in 1792. It is formed by the fast stellar wind from the Wolf-Rayet star WR 136 (HD 192163) colliding with and energizing the slower moving wind ejected by the star when it became a red giant around 250,000 to 400,000 years ago. The result of the collision is a shell and two shock waves, one moving outward and one moving inward. The inward moving shock wave heats the stellar wind to X-ray-emitting temperatures.
It is a rather faint object located about 2 degrees SW of [the bright star] Sadr. For most telescopes it requires a UHC or OIII filter to see. Under favorable circumstances a telescope as small as 8 cm (with filter) can see its nebulosity. Larger telescopes (20 cm or more) reveal the crescent or a Euro sign shape which makes some to call it the "Euro sign nebula".
Click here to see a wider angle view of this region, which shows adjacent larger diffuse hydrogen gas clouds in the constellation Cygnus:
www.flickr.com/photos/97587627@N06/29549773051
Click here to see the equipment used to photograph this galaxy:
www.flickr.com/photos/97587627@N06/29939255555
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Nikon D810a camera body at prime focus of Meade 30 cm (12") LX-850 Schmidt-Cassegrain telescope, mounted on Astrophysics 1100GTO equatorial mount
Fifteen stacked frames; each frame:
2483 mm focal length; ISO 10,000; 60 seconds exposure at f/8, unguided
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, sharpening)
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1,042 ten-second subframes. This overlaps with a previous image I made below and adds to the upper left.
Seestar S50 | Mosaic mode | Polar Alignment
Orion L stacked.reg_9_cropped
2 subframes each LRGB - all 5 minutes binned 1x1 +
3 x 30 second RGB frames for Trapezium & star colours.
1991 Ford Sierra Sapphire 1.8 GLX.
Supplied by Evans Halshaw (Ford).
Last MoT test expired in January 2007.
It failed a test in October 2007 -
Offside Front coil spring cracked (2.4.C.1a)
Nearside Rear Subframe mounting prescribed area is excessively corroded (2.4.A.3)
NGC 281 is the star cluster at the centre of the 'Pac-Man' nebula in Cassiopeia. This is a view in Hydrogen Alpha through my f/10 12inch SCT. At the top left are a number of star forming regions. This is a stack of thirteen five-minue subframes.
Peter
Year of first registration: 1992.
The GTM Rossa is a Mini based 2+2 kit car by GTM Cars.[1] The car was based on two front mini subframes, with the steering being locked on the rear subframe. The Mark 1 car was produced from 1987 to 1990, and the Mark 2 car was produced beginning in 1990.
Bron: Wikipedia.org
I like how the nebulosity emerged with both emission and hints of reflective nebulae. But I’ll need to figure out how to manage “bloated” stars.
TMB 80mm f/6.3 refractor, TV 0.8x field flattener/reducer, ASI533MC Pro, 20 60-second subframes with a dual narrow band filter and 20 90-second subframes without filter. Calibrated with darks, flats, etc. Post-processed with DSS and PS.
January 24, 2025; Backyard, Tallahassee, Florida. Bortle 7 sky. Waves of cirrus moved in during imaging making what would otherwise be good seeing variable. Guiding total error was about 2 arcsec. I’ve been using the ST-4 port to connect the guider. I’ll try using the ASCOM driver next time. I also used NINA’s sequencer and it worked fine. I had a few glitches due to “operator error” which should resolve with experience. NINA is an impressive program but has a bit of a learning curve. That’s what makes this hobby so much fun, all the learning curves. It’s hard to get complacent because there are always new challenges.
Telescope: Celestron 11" EdgeHD + HyperStar (F/2)
Camera: QHY23M
Mount: CGEM-DX
HA- 10 subframes x 300 seconds each- mapped as green channel
OIII- 10 subframes x 300 seconds each- mapped as blue channel
SII- 10 subframes x 300 seconds each- mapped as red channel
2h 30m total
I took an image of the Heart Nebula back in the autumn of 2013. While working on that image I was struck by the beauty of IC 1795, the appendage protruding from the "point" of the heart. At that time I acquired a few Ha subframes of IC 1795, but didn't get enough for an image. It's been on my unfinished business list since then.
This year while I was tuning the 16" I thought I'd use some of the time I was testing tracking accuracy to try to check IC 1795 off my todo list. This is the result.
The Heart Nebula itself is IC 1805/SH2 190. The gorgeous center of this nebula is a complex structure that I interpret as being a typical dust pillar, but seen from above rather than the side. If this is the case, then Melotte 15, the star cluster powering this entire complex, must be in front of the central pillar complex. Perhaps the Heart Nebula isn't so heart-shaped at all. It's a more typical hollow cavity, with an incredibly dense pillar on its far inner wall.
There is a considerable amount of oxygen and sulfur in this nebula. This indicates that it is older and much more evolved than most starbirth regions where these elements are much more rare. This is supported by the relative sparseness of Melotte 15. Perhaps many of its original members have been gravitationally ejected from the system and have entered the general population of the galaxy.
Sometimes when I take an image, I ultimately end up rather unimpressed by the result. Not too many people see those results. This one, though... I'm really pleased with this one. This goes into my picture book, and maybe even on my wall :)
This is 28x900Ha, 12x900OIII, and 13x900SII for a total of 13,25 hours of imaging on the Twin City Amateur Astronomers - TCAA.16" AG Optical Systems imaging Harmer-Wynne.
563 ten-second subframes.
I imaged the Flaming Star Nebula using two different smartscopes with dramatically different results. There were also differences in post-processing that influence the differences. The two smartscopes' cost was nearly identical. No one scope is better than the other, but each has a distinct look. See below for comparison.
Comet C/2016 R2, after a night of high fog and high humidity. Nevertheless, 20 subframes each were still usable. Here is the stack of monochrome images with blue filter. Later'll combine with the RGB subframes.
20 x 120 sec, blue filter, Hyperstar C14, ASI 1600 (cooled - 35°), Tenerife 1180 m a.s.l. 2018-01-09 1h UT
A few shockers in this one for me - the colour for a start - this colour became "fashionable" not that long ago? Certainly not something I would expect to see on a scrapped car anyway. Looking up the history of SL12 NRO, it amazes me to see that it failed an MOT in March 2021 for corrosion to the subframe - it did get repaired and still has a current MOT, with only 58k recorded - but as you can see, it was scrapped. I can happily report that my old Corsa is still on the go, now with 144k on the clock and no serious issues in it's MOT history - how could two cars starting out from the same point have such different histories?
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 23.30 and 23.50 EDT
* Total exposure time: 10 minutes
* 660 mm focal length telescope
* Field of view: ~2.8° wide x 1.7° high
* Altitude of galaxy at time of exposures: 22.5°, declining to 20.4°
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Description:
This was my first attempt at photographing this magnitude 8.8 galaxy, which is famous in the history of astronomy, as you will see from reading the description below:
From Wikipedia:
"NGC 6822 (also known as Barnard's Galaxy, IC 4895, or Caldwell 57) is a barred irregular galaxy approximately 1.6 million light-years away in the constellation Sagittarius. Part of the Local Group of galaxies, it was discovered by E. E. Barnard in 1884, with a six-inch refractor telescope. It is the closest non-satellite galaxy to the Milky Way, but lies just outside its virial radius. It is similar in structure and composition to the Small Magellanic Cloud. It is about 7,000 light-years in diameter.
Edwin Hubble, in the paper N.G.C. 6822, A Remote Stellar System, identified 15 variable stars (11 of which were Cepheids) of this galaxy. ... Hubble's detection of eleven Cepheid variable stars was a milestone in astronomy. Utilizing the Cepheid Period-Luminosity relationship, Hubble determined a distance of 214 kiloparsecs or 698,000 light-years. This was the first system beyond the Magellanic Clouds to have its distance determined. (Hubble continued this process with the Andromeda Galaxy and the Triangulum Galaxy). This distance to the galaxy was way beyond Harlow Shapley's value of 300,000 light-years for the size of the universe. In the paper, Hubble concluded the "Great Debate" of 1920 between Heber Curtis and Shapley over the scale of the universe and the nature of the "spiral nebula". It soon became evident that all spiral nebulae were in fact spiral galaxies far outside our own Milky Way."
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Technical information:
Nikon D810a camera body on Tele Vue 127is (127 mm - 5" - diameter) apochromatic refracting telescope, mounted on a Sky-Watcher EQ6-R PRO SynScan mount
Ten stacked subframes - each frame:
660 mm focal length
ISO 3200; 1 minute exposure at f/5.2, unguided, with long exposure noise reduction
Stacked in RegiStar 1.0.10
Processed in Photoshop CS6 (brightness, contrast, colour balance)
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