View allAll Photos Tagged subframe
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NOTE: This photo is mislabelled as having been made on Dec. 16. It was made on Dec. 21!
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Photographed from mid-town Toronto, Canada, at 04.55 EST (Moon altitude: 41° | Sun 30° below the horizon)
* Temperature -6° C. ~ warmer than last week!
The Sun reached the December solstice - marking the start of winter in the northern hemisphere and of summer in the southern hemisphere - at 05.44 EST today. The subframes for this image of the Moon were obtained just 49 minutes earlier.
At the time of this photo the Moon had passed its last quarter phase exactly 8 hours earlier, so the Moon was in its waning crescent phase, with the terminator (the dividing line between day and night) already appearing slightly curved. Slightly less than half (actually, 46.7%) of the Moon is illuminated by the Sun in this photo.
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Nikon D810 camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Sky-Watcher AZ-EQ6 SynScan mount.
1200 mm focal length, f/8
Best twelve of fourteen identical stacked frames; each frame:
* ISO 200, 1/200 sec. exposure
Stacked in Registax
Processed in Photoshop CS6
(image rotation, brightness, contrast, 35% colour desaturation, sharpening on left side of Moon)
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1995 Chrysler Atlantic Concept
The Chrysler Atlantic was a retro concept car created by Chrysler and fabricated by Gaffoglio Family Metalcrafters in California. It was first shown in 1995. The Atlantic was designed by Bob Hubbach and inspired by the Bugatti Atlantique. The idea for this car began out as a sketch on a napkin by Chrysler's president Bob Lutz in early 1993 and also involved the automaker's chief designer, Tom Gale.
The Atlantic has several similarities to the opulent vehicles of the 1930s such as the aforementioned Bugatti Type 57S Atlantique (or Atlantic). Its styling is also more than a little inspired by the Talbot-Lago T150 SS Coupe that was constructed in 1938, such as the shape of the side windows and the curved boot. Some of the retro details include a straight-8-engine that was actually constructed from two 4-cylinder Dodge Neon engines with an S configuration 4.0 L., which is rarely used in modern cars. Other retro touches to the car's look include the interior that is replete with Art Deco-style gauges. The Atlantic Concept has around 360 horsepower (268.5 kW) and uses Chrysler's 42LE transaxle transmission lifted from the Chrysler LHS mounted to the rear subframe. Power is sent from the engine to the transaxle through a long torque tube hidden under a large tunnel in the interior. Riding on a 128-inch (3,251 mm) wheelbase, its front wheels measure 21 inches and 22 inches in the rear — large at that time.
It was one of Chrysler's most popular concept vehicles and has proven popular enough to still make the occasional public appearance.
The Atlantic's popularity has also allowed its overall design and image to be associated as part of both advertising and labeling of packages associated with a variety of automotive car care products, accessories, and electronics.
Andromeda Galaxy is an island universe that lies some two million light years from our own Milky Way Galaxy. I think of my imaging system as a time machine that captured this object as it appeared two million years ago. If it is still there, I wonder what it looks like now.
This is a preliminary LRGB image to which I willl add Hydrogen alpha data (Ha). The Ha data will highlight the star-forming regions in the spiral arms of the galaxy. My objective in this rendering was to explore the full LRGB possibilities before adding the Ha data.
60-second subframe exposures were taken to minimize saturation in the bright galactic center.
ZWO ASI6200MM-P/EFW 2" x 7 (LRGB)
Tele Vue NP101is (4" f/4.3)
Losmandy G11
Integration time:
L: 60s x 233 = 3:53
R: 60s x 74 = 1:14
G: 60s x 80 = 1:20
B: 60s x 71 = 1:11
Total integration time: 7:31
Captured with NINA, processed with PixInsight, and finished with Affinity Photo.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 02.29 and 02.50 EDT
(285 km by road north of Toronto)
* Temperature 12° C.
* Total exposure time: 10 minutes
* 540 mm focal length telescope
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Description:
One of the most famous and best known objects in the sky is this large spiral galaxy, which can be seen with the unaided eye in a dark-sky location late in the northern hemisphere summer and in the autumn.
M31 is about 50% larger than our own Milky Way galaxy, and lies at a distance of about 2.5 million light years. For more information about M31, click here:
en.wikipedia.org/wiki/Andromeda_Galaxy
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@N06/29251167742
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Technical information:
Nikon D810a camera body on Tele Vue 101is apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Ten stacked frames; each frame:
540 mm focal length
ISO 4000; 1 minute exposure at f/5.4; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (levels, brightness, contrast, colour balance, sharpening)
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M51, also known as the Whirlpool Galaxy, is a spiral galaxy located in the constellation Canes Venatici. It is approximately 23 million light-years away from Earth and has a diameter of about 100,000 light-years. The galaxy is named after its distinctive spiral arms that resemble a whirlpool.
M51 is a popular target for astronomers and amateur stargazers due to its brightness and proximity to Earth. It is also a prime example of a grand design spiral galaxy, with well-defined spiral arms that are thought to be caused by density waves in the galaxy's disk.
The Whirlpool Galaxy is also notable for its interaction with a smaller companion galaxy, NGC 5195. The two galaxies are connected by a bridge of gas and dust, and their gravitational interaction has caused a burst of star formation in the Whirlpool Galaxy's outer regions.
AQUISITION:
Telescope: SkyWatcher Esprit 120
Camera: QHY268MM
Filters: Astronomik Deep Sky LRGB-Ha
SUBFRAMES:
Lum: 236 x 120"
Red: 74 x 300"
Green: 60 x 300"
Blue: 60 x 300"
Hydrogen Alpha: 60 x 300"
Total exposure time: 39 hrs
Taken between March & May 2023
Andromeda Galaxy is an island universe that lies some two million light years from our own Milky Way Galaxy. I think of my imaging system as a time machine that captured this object as it appeared two million years ago. If it is still there, I wonder what it looks like now.
This is an LRGB image that is augmented with Ha data to highight the star forming regions, which appear as reddish blotches in the spiral arms of the galaxy. The preliminary LRGB and Ha data that comprise this image were uploaded on November 1st and 12th, respectively.
60-second subframe exposures were taken in LRGB and HDRMT was used in PixInsight processing to minimize saturation in the bright galactic center.
ZWO ASI6200MM-P/EFW 2" x 7 (Chroma 3nm Ha, ZWO LRGB)
Tele Vue NP101is (4" f/4.3)
Losmandy G11
Integration time:
Ha: 600s x 16 = 2:40
L: 60s x 233 = 3:53
R: 60s x 74 = 1:14
G: 60s x 80 = 1:20
B: 60s x 71 = 1:11
Total integration time: 10:11
Captured with NINA, processed with PixInsight, and finished with Affinity Photo.
The 1961 Chrysler 300G was the final year for fins on the 300, marking the end of Virgil Exner's FlightSweep designs, but they did go out in a grand way!
Chrysler's first-generation Letter Cars hammered the competition during the 1955-'56 NASCAR seasons. The full-size fliers then went on to set speed records at Daytona in '57, prior to both the AMA ban on motorsports and NASCAR's embargo on elaborate fuel delivery systems. In spite of those two apparent setbacks, Chrysler continued to improve its top-of-the- line V-8 engine as well as the now-legendary luxury performance machine that engine came wrapped in. So, the mighty Letter Cars thundered on, in production form, at the command of well-heeled owners seeking grown-up thrills. By 1961, Chrysler had moved up the alphabet to the letter "G."
The post-'57 Letter Cars were no longer eligible for circle track racing, but the 300G was still a force to be reckoned with in street trim, thanks to performance equipment that not only sounded good—413 cubic inches, Cross-Ram, dual four-barrels—but backed it up with 375 or an optional 400 horsepower, delivering a 0-60-mph time of 8.2 seconds (Motor Life, April 1961). Though not the fastest time turned by contemporary road test periodicals, it occurred during a period when most full-size cars could barely achieve 60 mph in less than 10 or 11 seconds while simultaneously maintaining an air of luxury.
Today, the 1961 300G is among the legion of groundbreaking Mopar performance cars, respected for its stunning combination of power and styling. Its value is bolstered by low production numbers— just 1,280 hardtops and 337 convertibles were built. These cars remain in the upper stratosphere of postwar American collector cars, but prices in recent years have held steady. Is this your time to grab one of the few remaining pieces of Letter Car history? Here's what you should keep in mind when you begin to shop.
The Cross-Ram Induction system's 30-inch "Long Rams" hide the big 413 V-8 from view.
Engines
Chrysler engineers specified a 413-cu.in. wedge to go under the hood of every 300G. Introduced into the RB-Series of V-8s in 1959, the 413 had a 4.18-inch bore and a 3.75-inch stroke with a forged-steel crankshaft. Compression was advertised as 10.1:1 and the cylinder heads breathed through 2.08/1.60-inch intake/exhaust valves, while a .430-inch lift, 268-degree camshaft dictated valve action. Also included was a pair of Carter AFB four-barrel carburetors. There were, however, two versions of the 413 installed, which were differentiated by the intake manifolds.
Referred to as Ram Induction and initially appearing in 1960, the elongated aluminum intakes were designed based on much older principles involving resonance and its effect on a compression wave of, in this case, the fuel/air mixture. Though we won't go into greater depth regarding the physics here, intake tube length had a direct effect on the timing of the fuel delivery, or ramming, into each cylinder bore, maximizing engine output at certain rpm ranges.
A pair of Carter AFB four-barrel carburetors provide the fuel/air mix.
With these basics in mind, expansion of midrange output was the main target of the base 300G 413 and the engineers thus calculated 30-inch runners would be ideal. Referred to as the Long Ram intakes, they were designed to fit neatly under the hood and crisscross (hence the Cross Ram moniker) over the top of the engine, each fitted with a single four-barrel carburetor at the outboard location. In this configuration, the engine hit 375 hp at 5,000 rpm and 495 lb-ft of torque at 2,800 rpm, effectively providing passing power on demand without sacrificing full-throttle acceleration.
Optional was the high-performance Short Ram version. Though this intake system looked identical to the Long Ram at first blush, the separate internal runners measured only 15 inches in length, raising the engine's power band and enabling it to make peak horsepower at 5,200 rpm, with peak torque at 3,600 rpm. This meant that Chrysler's advertised Short Ram ratings were 400 hp and 465 lb-ft of torque.
Visually, a keen eye can spot the difference between the Long and Short Ram intakes. The Long Rams feature a visible valley between each pair of runners for the entire length; they also have a seven-digit casting number that begins with "19." Short Rams sport only a partial valley between runners; their seven-digit casting number begins with "21." Finally, Short Ram 413 engines were designed for those more interested in straight-line contests and are therefore the rarer of the two.
Transmissions
Backing either engine was the already-durable 727 TorqueFlite automatic, which was issued as standard equipment. Like other Chryslers of the day, the three-speed unit was shifted via pushbutton on the dash; it contained first and second gear ratios of 2.45:1 and 1.45:1, respectively. Replacing the French-made four-speed on the option chart was a floor-shifted three-speed manual, which is a relative rarity today. First and second gear ratios were 2.55:1 and 1.49:1; the two gears were not synchronized, making for some uncomfortable downshifts for the uninitiated. Furthermore, contemporary road tests complained of a long second-to-third gate while hinting that the better performer in transferring torque to the differential was the TorqueFlite.
Swivel front seats, upholstered in ventilated leather, were standard on the 300G.
Differential
The final transfer point for the torque from either engine was a standard 8.-inch open differential with semi-floating axles and a 3.23:1 final drive ratio, although some printed material suggests that a 3.15:1 ratio was employed when the three-speed manual was installed. While this unit was known for its durability, dealers were also able to provide a number of more highway-friendly or performance-oriented grear ratios, even if the optional Sure-Grip (positive traction) unit was installed on the assembly line.
Contemporary magazines reported an average mpg rating of 9 to 13 with a three-speed/3.23 arrangement, yet in terms of power off the line, both Motor Trend (8.3-second 0-60 mph) and Motor Life (8.2 seconds) stated that the 300G had more acceleration potential waiting to be unleashed if geared accordingly.
The center console provided some storage and housed a tachometer.
Chassis
Each 300G hardtop and convertible was derived from the New Yorker, which meant they shared the same basic unit-body/subframe platform and 126-inch wheelbase; however, the similarities were limited beyond that. For instance, though an independent front torsion bar suspension system was used, the 44 x 1.08-inch torsion bars were thicker and 40 percent stiffer than those on other Chryslers, rated for 175 lb-in. The same can be said of the rear semi-elliptic leaf-sprung suspension, rated for 135 lb-in (or 50 percent stiffer) than those on the New Yorker. For reference, the rear springs were comprised of seven leaves, measuring 60 x 2.50 inches. Power steering, with its 15.7:1 gear ratio, was also standard equipment, as were heavy-duty shocks.
In short, the chassis was engineered and better suited for high-speed highway travel and maneuverability rather than a short drive across the city. It could also handle short, quarter-mile blasts if, as discussed, geared accordingly.
Brakes
Although equipment upgrades were made in other areas, the hydraulic drum-brake system was the same as found in the New Yorker series. Drum brakes, measuring 12 x 2.50-inches, were utilized at each corner. Power assist was standard, so stopping the roughly 4,200-pound performer was easier; however, as with other drumbrake systems, each corner needed to be adjusted equally to prevent directional pull during sudden stops. Additionally, Chrysler employed two wheel cylinders per front assembly—a fact to keep in mind when seeking replacement parts.
Wheels and Tires
Unlike the previous 300F, the new 300G was bestowed with larger 15 x 6-inch pressed-steel wheels, which were then shod with 8.00-15 Goodyear Blue Streak "racing-type" tires that featured white sidewalls. According to one report, the width of the whitewall itself ranged from 3- to 3 3/16-inches. Vented "300" wheel covers completed the ensemble, and no options were available.
Body and Interior
Styling updates made to the '61 Chryslers, including the 300G, probably did more to generate higher sales than printed virtues touting the fleet's combination of power and comfort, marking the end of Virgil Exner's FlightSweep designs. The changes began with a complete revamp of the front end, where the grille was simply inverted. The top-to-bottom inward canted grille sides were harmoniously complemented by equally canted quad headlamps, running lamps, and bumper ends, while also matching the angle of the rear fins— which were also slightly redesigned. At the opposite end, the faux spare tire decklid inlay was scrapped, providing a cleaner expanse of sleek sheetmetal. Other than appropriate badging denoting the letter "G," little else appeared to change on the 219.8-inch-long body; the greenhouse and rear fenders were carry-over items, with the exception of the leading edge of the fins found on each door.
Interiors remained exquisitely plush. A full-length, front-to-rear tunneled center console divided the interior in two, creating four truly individual buckets seats wrapped in ventilated leather. Those front seats retained the swivel feature, making for easy ingress/egress, while the console was trimmed with ample amounts of chrome and padded armrests that flipped open to expose additional storage areas. The console also housed optional power window controls, ashtrays, and a tachometer.
Primary instruments resided in a dome-like, easy-to-read bubble; potential glare concerns were eliminated by means of a matching padded dash arch. The transmission's pushbutton controls resided to the left of the instrument cluster, balanced by radio, heat, and air controls to the right. Comfort and convenience options included power seats, power antenna, rear window defroster, and air conditioning.
Source: Hemmings
Andromeda at this time of year doesn't get high enough above the horizon to photograph until about 2am or so. It starts getting too light to photograph at around 4am. Which gives only about 2 hours during one night to capture the image. I'm not usually up at 2am, but Seestar can be set to autopilot and do the late night/early morning work while you sleep.
782 ten-second subframes taken over two nights.
Seestar S50 mosaic mode | Polar Alignment
Taken from my backyard @ Tiny Twp, Ontario Canada on the morning 01 Oct 2025 5 am with Askar APO185 and ASI533MC camera . Comet is very low just @35 degrees altitude on East between trees . Stack of 25 X 60 sec subframes and processing in PI .
Here is comet in color , I found set of three RGB subframes 60 sec each and stack and processing in PI .Taken on Jan 20 , 2020 with SBIG ST-8300 CCD camera through TS 130 mm APO refractor working @ F/7 and Deep Sky Astronomik filters.
M51 in Ursa Major is the first galaxy for which a spiral structure was detected. William Parsons, the 3rd Earl of Rosse, observed and sketched M51's spiral arms using his 72" telescope in Ireland. M51 tidally interacts with an adjacent smaller companion galaxy, NGC 5194, creating the extended area of brightness you can see below and to the right of the galaxy pair.
Telescope: Celestron EdgeHD 8"
Reducer: 0.7x (1440mm Focal Length)
Camera: QSI 683wsg
Filters: Baader RGB-CCD + UV/IR Cut
Mount: Astro-Physics Mach1 GTO
Integration: 40-50 mins each LRGB (5 min subframes)
Processing Software: PixInsight v1.8
I love dark nebulas: dust lanes and molecular clouds which occlude starlight and create unique whispy and tendril-like shapes in the sky.
In the constellation Cepheus there's a large emission nebula (IC 1396) which includes the famous Elephant Trunk nebula (IC 1396a), along with interesting dark nebulas (example: LDN 1104, 1111, 1121, 1130, etc). Some of these are included in the LDN and Barnard catalogues, however, after watching the latest Astro Imaging Channel episode, I'm not sure if they've been labelled correctly!
This image was taken with a Televue NP101is telescope mounted on a ZWO AM5 mount. Imaging camera was an ASI 2600MM Pro and Baader LRGB filters. Autoguiding was done using a SXpress Lodestar mounted on an off-axis guider. 2.5 hours of subframes were stacked
and processed in Pixinsight to obtain the final image.
The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, in the Orion constellation.
The Horsehead Nebula is approximately at 1400 light-years from Earth.
This is a two panel mozaic
Pre process : flic.kr/p/2mZk6WG
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -25°C gain 101 offset 49
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher AZ-EQ6
Filter: Optrolong L-eXtreme
-Acquisition-
Light : Panel 1-41x300s / Panel 2-36x300s
Total integration time 6,5h
Dark-100x300s Flat-50 Bias-100
Date : 25,24 January 2022
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
Ez Processing Suite from darkarcon
darkarcon website : darkarchon.internet-box.ch:8443/
-Pre Processing each panels in PixInsight-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Drizzle x2
Dynamic crop
-Processing
DBE master Light
Split L,R,G,B layer from Master light
__L__
Ez_Deconvolution
Ez_Denoise
Ez_Soft Streatch
UnsharpedMask
LocalHistogramEqualization
__RGB__
Linear Fit
BackgroundNeutralization
PhotometricColorCalibration
Ez_Soft Streatch
Starnet++
CuvesTransformation with mask
SCNR star mask
Bring back stars with PixelMath
__LRGB__
LRGBCombination
Final CurvesTransformation
DarkStructureEnhance Script
Save as jpg
Clear Skies !
NGC 6995 also know as the Eastern Veil is a part of the Cygnus Loop, a large supernova remnant in the constellation Cygnus.
She is located around 2500 light-years.
Personally i see the face of the Joker 😄
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -5°C gain 101 offset 49
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher AZ-EQ6
Filter: Optolong L-eXtreme
-Acquisition-
Light : 128x300s
Total integration time 10,6h
Dark: 100x300s Flat-50 Bias-100
Date : 20,21,23,24,25 August 2022
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
Ez Processing Suite from darkarcon
darkarcon website : darkarchon.internet-box.ch:8443/
-Pre Processing in PixInsight-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Image Integration
Drizzle x2
Dynamic crop
-Processing
DBE MasterLRGB
___RGB layer___HOO
Split RGB channels to build Ha and Oiii
Ha=R Oiii= B*0.3+G*0.7
EZ_Soft Stretch
HOO combination with Foraxx formula
R=Ha
G=((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
B=Oiii
___L layer___
Ez_Deconvolution
Ez_Soft Stretch
Local Histogram Equalization with nebula mask
UnsharpedMask with nebula mask
___LRGB___
Ez_Denoise
Curve Transformation
Annotation
Save as PNG
Clear skies !
The photo is of the visitors at the Frido Kahlo exibition, as the title says, the slow shutter speed rendering the "abstraction"; the projected form on the wall, the red (pink) band and the moving darker forms of the visitors around the yellow form serving as frame in frame, or #subframing; with the projected colors amphasizing the red and the yellow, caught during exposure, among the many colors she used so skillfully.
The Fishhead Nebula is in the upper right hand side.
While I'm really happy with how this turned out I think more detail could be revealed with additional data time so I'll probably return to this in the near future.
Dwarf 3
125 45-second subframes
Located close to the Orion Nebula and usually included in the same frame but not very often given the main stage.
Imaged 17 Dec 2022 on a single night test imaging session after a complete rebuild of the Celestron C11 Edge HD imaging setup.
This is 362 x 60 second subframes totaling 6 hours of integration.
The full details are available on my Astrobin page astrob.in/w1lbb3/0/
Technical summary:
Celestron C11 Edge HD with 0.7 focal reducer.
ZWO ASI2600 MC Pro camera.
Baader Moon and Sky Glow filter.
EQ6 R Pro mount.
200mm guide scope.
No flats, no darks only 50 bias frames for calibration.
Edited with PixInsight and Adobe Lightroom Classic.
Everybody's favorite. The tug of war between two galaxies.
Dwarf 3 Smartscope
191 45-second subframes
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 21.46 and 22.03 EDT
(285 km by road north of Toronto)
* Temperature 15° C.
* Total exposure time: 6 minutes
* 20 mm lens
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130 degrees of the northern portion of our home galaxy, the Milky Way, and some 80,000 stars, are seen in this wide angle image, running from the constellation Cepheus at left, through Cygnus and Aquila, to Scutum at right. The Milky Way bulges noticeably at the right side, toward the centre of the galaxy in Sagittarius (out of view to the right).
A little left of and below centre is the shocking pink, distinctively-shaped North America Nebula in the constellation Cygnus. For a telephoto view of this nebula made with a 300 mm lens on the same night, click here:
www.flickr.com/photos/97587627@N06/29220929561
Just to the right of the North America Nebula lies a region of glowing red hydrogen gas surrounding the star Gamma Cygni. For a telephoto view of this region, click here:
www.flickr.com/photos/97587627@N06/27845511250
And near the left edge, just below centre, is a fainter circular area of glowing red hydrogen gas, called IC 1396. For a close-in view of this gas cloud, click here:
www.flickr.com/photos/97587627@N06/19929294304
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Sigma 20 mm f/1.4 ART lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Six stacked frames; each frame:
20 mm focal length; ISO 2500; 60 seconds exposure at f/4
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance)
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Inside an old shelter
#FlckrFriday
#542
This week's FlickrFriday theme is: #Subframing
Le thème de ce FlickrFriday est: #Sous-ossature
O tema desta FlickrFriday é: #Sub-enquadramento
本次 FlickrFriday 主題: #子框架
FlickrFriday-Thema der Woche: #Unterrahmen
El tema de FlickrFriday es: #Sub-encuadre
NGC 6910 is an open star cluster set amidst clouds of gas and dust near the bright star Sadr in the constellation Cygnus.
Subframes for this image were accumulated over 4 different nights, some under dark skies near Goldendale, WA and others from within Seattle city limits. RGB data for the stars was combined with narrowband data for the gas and dust, with Ha assigned to R. In an effort to maintain a "natural" appearance, only modest amounts of SII and OIII data were added to the G and B channels, respectively.
Telescope: Celestron EdgeHD 8" with 0.7x Reducer
Camera: QSI 683wsg
Mount: Astro-Physics Mach1 GTO
Integration: 30 min (6 x 5 min) each RGB, binned 1x1 | 300 min (30 x 10 min) Ha, binned 1x1 | 100 min (10 x 10 min) SII, binned 2x2 | 120 min (12 x 10 min) OIII, binned 2x2.
M17 to M16 The Swan and Eagle Nebulas
Taken on 9/5/16, I was going to add more subframes but I decided move on to other targets. Only 4 exposures, 20 minutes long.
No flats or bias and only 6 dark frames used
QHY10 One-Shot color
AstroTech AT65EDQ
Orion Sirius Mount(on pier)
Adam, a sculpture on the left side of the entryway to the Rodin Museum, Benjamin Franklin Parkway, Philadelphia, Pennsylvania
Some of the middle-sized bells in Loughborough's Carillon. It was built after the first world war as a war memorial. The bells were cast in Loughborough's John Taylor bell foundry and funded by individuals and local businesses. The 46 metre high carillon tower was officially opened on 22 July 1923; this photograph was taken 100 years and a day after that! There is a total of 47 bells sounded by mechanical links to an organ-like keyboard whose keys need to be played by the carilloneur with fists and feet. It's wise to avoid ascending past the bass bells when the carillon is playing!
IC 443 also known as the Jellyfish Nebula is a supernova remnant (SNR) in the constellation of Gemini. Its distance is approximately 5,000 light years from Earth and a diameter of 70 light years. This image has been processed in the style of the Hubble pallete using two narrow band 3nm filters of Ha and Oiii. This helps to separate the two gasses from each other.
Location: Gergal, Spain - January 2023
Scope: William Optics GT81 385mm
Camera: ZWO ASI2600MC Pro
Mount: Celestron CGX
Filter: Optolong L-Ultimate Dual 3nm Narrow Band
Subframes: 90 x 600s
Integration: 15 hours
A quote by Jung about exploring the Psyche.. I think it applied here too, at least it was in my head getting this view. Another trip to the river , its a long drive to this place and trying to time my original idea hasn't worked out in about just over a month.
Eight feet up a vertical rock wall to stand on a two foot square ledge with another sixty foot drop to the rocks and river below with a pack and heavy tripod. Thankfully the rocks have ledges that stick out and I could grab onto the trestle uprights to hold on once I got up there so this was from inside the trestle bridge, interestingly it was the last shot I took before I went to climb back down and leave.
Will I go back for the original shot... I don't know for now, maybe this is why I kept going back and just didn't know it. We'll see.
Nikon Nikkor 50mm 1.2 AIS.
Thanks for checking out my work...Appreciate all of you.
7 subframes (images) and 10 darks (for calibration). Stacked in Deep Sky Stacker and further processed in Photoshop to increase contrast.
Shot from the North-South Lake Campground, Catskills, NY.
Grupo de 7 fotos y 10 oscuras para calibrar. Procesadas en Deep Sky Stacker y Photoshop para mejor contraste.
Las saque en North-South Lake Campground, Catskills, Estado de New York.
Planetary nebula HFG1 (PK 136+05)
HFG1 is an old, faint, and thus rarely imaged planetary nebula in Cassiopeia. Its most distinctive feature, the blue bowshock, results from this ball of expanding gas bowling through the interstellar medium at between 29 and 59 kilometers per second, leaving behind a trail of gasses. A planetary nebula forms when a sunlike star reaches the advanced age where it first becomes a bloated red giant star, and then throws off the star’s outer shell of gasses when the core collapses to form a white dwarf star. In the case of HFG1, the central white dwarf star V664 Cas is accompanied by a smaller star that is so close it completes each orbit in only about 14 hours. HFG has expanded for approximately 10,000 years, to the point where the nebula is about one lightyear across.
Telescope: .5 meter Planewave CDK20 telescope
Camera: FLI PL9000 monochrome camera
Location: Sierra Remote Observatories in California
Date: October 18 through November 10 of 2018
Exposure time: 48.5 hours of Hα data (97x 30min subframes), 36 hours of OIII (72x30min), and 5.7 hours combined for RGB (stars only). So total image exposure time is over 90 hours.
Processing: PixInsight and Photoshop
Note: This is a stacked single target image. Only the bad (overscan and alignment overlapped) edges of the frame were cropped out.
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I photographed this nebula not long ago, so why photograph it again? The answer is I used a different smart telescope: The Dwarf III. I still use the Seestar S50. I'll go into my reasons later. This is my very first Dwarf III image.
Dwarf III - Gain 60, 15 second exposures, (after culling) 720 subframes.
At the center of this image is M 100, a face-on spiral that is part of the Virgo Cluster of galaxies. It is located in the constellation Coma Berenices. The distance to it is about 55 million light years -- the same as the rest of the Virgo Cluster. It is also known as NGC 4321.
To the right of it in this image (but south of it on the sky) is another spiral galaxy, NGC 4312. The Cosmicflows-2 catalog (Tully, et. al., 2013) puts the distance to this galaxy as 37.2 million light years -- significantly closer to us than M 100. It is also an edge-on galaxy, giving it a more flattened appearance.
This is a stack of 20 6 min exposures taken from my Bortle 8/9 backyard in Long Beach, CA. I used a Celestron Edge HD 925 at f/2.3 with Hyperstar lens and an Atik 314L+ color CCD camera with a Baader light pollution filter. Preprocessing of subframes in Nebulosity; registration, stacking, and processing in PixInsight; final touches in Photoshop.