View allAll Photos Tagged Subframing
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 02.44 and 02.55 EDT
* Altitude of the cluster at time of exposures: 38°
* Temperature 15° C.
* Total exposure time: 5 minutes
* 660 mm focal length telescope
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Description:
This large, pretty and bright open cluster of stars - which happens to lie in our line of sight in front of one of the bright and star-dense arms of our Milky Way galaxy - is a favourite observational target of northern hemisphere astronomers on summer evenings.
From Wikipedia:
"The Wild Duck Cluster is one of the richest and most compact of the known open clusters, containing about 2900 stars. Its age has been estimated to about 250 million years. Its name derives from the brighter stars forming a triangle which could resemble a flying flock of ducks (or, from other angles, one swimming duck)."
For a wider angle view of Scutum and M11, made with a 540 mm focal length telescope in September 2016, click here:
www.flickr.com/photos/97587627@N06/30487082573
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@N06/50040538562
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Technical information:
Nikon D810a camera body on Tele Vue 127is (127 mm - 5" - diameter) apochromatic astrograph, mounted on Astrophysics 1100GTO equatorial mount
Five stacked frames; each frame:
660 mm focal length
ISO 3200; 1 minute exposure at f/5.2; unguided
With long exposure noise reduction
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (highlights / shadows, levels, brightness / contrast)
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Manufacturer: Auto Union AG, Auto Union AG, Chemnitz - Germany
Type: Lastwagen
Engine: 692cc straight-2 two-stroke water-cooled
Power: 20 bhp / 4.000 rpm
Speed: 85 km/h
Production time: 1934 - 1936
Production outlet: unkown
Curb weight: 800 kg
Special:
- Auto Union was the result of a merger between four companies in 1932: Wanderer, DKW, AUDI and Horch.
- The emblem represents this amalgamation with its four rings, one representing each company.
- The shares were sold in 1964 to Volkswagen and from that time on they were called Auto Union (without DKW).
- In 1969, NSU became part of the union and became known as AUDI NSU. In 1985, it offically became known as AUDI.
- From 1931 until Juli 1963 they were build at Audi works in Zwickau, Germany.
- This DampfKraftWagen (DKW) "Lastwagen" / lorry was based on the F4 Series (1934-1935), having front wheel drive.
- It has a three-speed manual gearbox (with a lockable freewheel device), a "Krückstockschalthebel" / "umbrella stick" coming out of the dahsboard, a 6-Volts electric system, a 32 liter fuel tank and front wheel drive.
- Its self-supporting body was supported by a U-profile plywood subframe, has rear hinged "suicide" doors for easier access and egress, independent suspension and drum brakes all around.
M31 with M32 lower middle and M110 upper right. This image was taken in light polluted skies with a colour deep sky camera and is a stack of just 20x2minutes subframes. I was experimenting with its settings to see what would work effectively on this target without the usual problem of over-exposing the central area. Normally with deep sky CCD cameras I need two or three hours of data to get a similar result.
Peter
Equipment:
Atik Horizon colour CMOS camera set to medium gain, Baader-S filter, 80mm triplet APO refractor, EQ8 mount.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 23.30 and 23.56 EDT
(285 km by road north of Toronto)
* Altitude of Cygnus at time of exposures: 70-75°
* Temperature 19° C.
* Total exposure time: 12 minutes
* 50 mm focal length lens
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Description:
Our home galaxy, the Milky Way, runs through the constellation Cygnus (the Swan) in the northern hemisphere summer sky. Dense clouds of stars are obscured in places by winding lanes of dark foreground gas.
The bright stars of Cygnus form the distinctively-shaped "Northern Cross"; you can see the star pattern in the labelled version of this image by clicking on the RIGHT side of your screen, or by clicking here:
www.flickr.com/photos/97587627@N06/48484720741
One of the largest and most obvious red hydrogen gas clouds is the aptly named "North America Nebula", left of and a little above centre. For a close-up view of this nebula made with a 400 mm lens, click here:
www.flickr.com/photos/97587627@N06/19933485213
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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
Six stacked frames; each frame:
50 mm focal length
ISO 2000; 2 minutes 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 11 km east-southeast of Coober Pedy, South Australia, long. 134.85° E., lat. 27.08° S., between 23.10 and 23.44 CAST (Central Australian Standard Time)
* Altitude of centre of LMC at time of exposures: 20°, declining to 17.5°
* Temperature 10° C.
* Total exposure time: 16 minutes
* 540 mm focal length telescope
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Description:
The LMC is satellite galaxy of our own Milky Way that is part of the Local Group of galaxies, lies about 163,000 light years from us, and has a diameter of about 14,000 light years. Nearby is the smaller galaxy called the Small Magellanic Cloud (SMC).
To the unaided eye in a dark sky site the LMC is a large, faint glowing patch that appears detached from the band of the Milky Way.
From Wikipedia:
"Although both clouds have been easily visible for southern nighttime observers well back into prehistory, the first known written mention of the Large Magellanic Cloud was by the Persian astronomer `Abd al-Rahman al-Sufi Shirazi, (later known in Europe as "Azophi"), in his Book of Fixed Stars around 964 AD.
The next recorded observation was in 1503–4 by Amerigo Vespucci in a letter about his third voyage. In this letter he mentions "three Canopes [sic], two bright and one obscure"; "bright" refers to the two Magellanic Clouds, and "obscure" refers to the Coalsack.
Ferdinand Magellan sighted the LMC on his voyage in 1519, and his writings brought the LMC into common Western knowledge. The galaxy now bears his name.
Measurements with the Hubble Space Telescope, announced in 2006, suggest the Large and Small Magellanic Clouds may be moving too fast to be orbiting the Milky Way."
The Tarantula Nebula is a region of glowing hydrogen gas within the LMC. It is extremely luminous, so much so that if it were at the distance of the Orion Nebula it would cast shadows.
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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@N06/42979795051
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This is the telescope and mount that I used for my astrophotography on this trip:
www.flickr.com/photos/97587627@N06/28602350028
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Technical information:
Nikon D810a camera body on Tele Vue 101is 101 mm (4") apochromatic refracting telescope, mounted on Sky-Watcher HEQ5 equatorial mount
Fourteen stacked subframes - each frame:
ISO 2500; 1 minute exposure at f/5.4, 540 mm focal length, unguided (with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness / contrast, levels, colour balance, masking of centre of Tarantula Nebula)
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Taken with the C14 and SBIG STXL-6303 at Cerritos College. The moon was still below the horizon, and the sky was cloudless enough for me to do guided shots. There's always moist air to the south from campus, though, and the limiting magnitude was 17.2 for this image. 16 30 s subframes were stacked to create this. An Antlia L filter was used. The position of the supernova is indicated with white line segments.
2024-04-27.222
ASTAP gives a CV magnitude of 11.8
This was essentially maximum brightness for this supernova.
I realize now that I was not setting apertures properly in ASTAP, and all of my previous magnitude estimates are likely too faint.
This is a close-up of relatively small but bright planetary nebula M57. It is a LRGB where the luminance subframes are all just 1 second each. I admit it was an unintentional error but it worked! I had actually set them for 3 seconds each but a technical problem that froze the camera before I could start recording meant that when I re-set I failed to notice it had reverted to 1 second per frame.
L = 509x1 second
R = 151x4 seconds
G = 176x4 seconds
B = 181x4 seconds
Peter
Equipment:
ZWO ASI174MM mono CMOS camera, LRGB filters, 12inch f/10 LX200 SCT, EQ8 mount.
Atik 314L+ with Sigma 70-300 zoom lens (set to 135mm) and Baader 7nm Ha filter (1.25") piggybacked to main scope on a CEM60. Four subframes of fifteen minutes each stacked in Deepskystacker and processed in PS CS2.
Taken early hours of 30th Sept 2021
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 00.48 and 01.11 EDT
* Altitude of centre of frame at time of exposures: ~24°, declining to 21°
* Temperature 11° C.
* Total exposure time: 11 minutes
* 1253 mm focal length telescope
___________________________________________
Description:
This large, pretty and bright open cluster of stars - which happens to lie in our line of sight in front of one of the bright and star-dense arms of our Milky Way galaxy - is a favourite observational target of northern hemisphere astronomers on summer evenings.
From Wikipedia:
"The Wild Duck Cluster is one of the richest and most compact of the known open clusters, containing about 2900 stars. Its age has been estimated to about 250 million years. Its name derives from the brighter stars forming a triangle which could resemble a flying flock of ducks (or, from other angles, one swimming duck)."
For a wider angle view of the region of Scutum surrounding M11, made with a 660 mm focal length telescope in August 2019, click here:
www.flickr.com/photos/97587627@N06/48471276616
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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
Eleven stacked subframes; each frame:
ISO 5000; 1 minute exposure at f/8
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels), slight sharpening
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FR : Musée du cheval
Chantilly (60)
Détail de l'essieu avant directionnel en bois laqué d'un "Brougham", voiture hippomobile produite en Angleterre par Barker & Co vers 1880.
EN; Horse museum
Chantilly
Detail of the lacquered wooden directional front axle of a "Brougham", horse-drawn carriage produced in England by Barker & Co around 1880.
Paid yet another visit to Aladin's cave today (Lamb Engineering)
This is Larry's new engine which will feature in his entry to the AMD World Championships Bike build off later in the year..
It's a single cylinder around 600cc with the head being machined from solid brass..
The frame and forks for the bike have been machined from aluminium, with the exposed gearbox being an integral part of the subframe..
If you behave I may post a picture of it...
Phone image.
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Photographed outside Uluṟu-Kata Tjuṯa National Park, Northern Territory, Australia (440 km by road southwest of Alice Springs), long. 131.04° E., lat. 25.22° S., between 01.53 and 02.26 CAST (Central Australian Standard Time)
* Altitude of centre of frame at time of exposures: 70°
* Temperature 10° C.
* Total exposure time: 16 minutes
* 35 mm focal length wide angle lens
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Description:
The centre of our home galaxy, the Milky Way, lies in the constellation Sagittarius, in the middle of the prominent bulge of stars and nebulae in this view, made with a wide angle 35 mm lens. Numerous star clusters, dark foreground gas clouds, and pink hydrogen gas nebulae are strewn across the frame.
The centre of the Milky Way lies very low on the horizon as seen from the northern hemisphere. Astronomers travel to the south in order to see the magnificence of the Milky Way straight overhead in the months of May-August.
This is the telescope and mount that I used for my astrophotography on this trip:
www.flickr.com/photos/97587627@N06/28602350028
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@N06/42246055924
__________________________________________
Technical information:
Sigma 35mm f/1.4 DG HSM ART Lens on Nikon D810a camera body, mounted on Sky-Watcher HEQ5 equatorial mount with Kirk Enterprises ball head
Sixteen stacked subframes - each frame:
ISO 2500; 1 minute exposure at f/4, 35 mm focal length, unguided (with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness, contrast, colour balance)
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Manufacturer: Sociéte Industrielle de Mécanique et de Carrosserie Automobile, Nanterre - France
Type: 1100 LE 6CV 5-doors hatchback
Production time: mid-year 1975 - mid-year 1981
Production outlet: 476,943
Production outlet: 2,167,129 (1967-1982 / LCV VF2 (Voiture Fourgonette / Vans) until April 1985)
Engine: 1118cc straight-4 Simca 135-series OHV pushrod Poissy engine
Power: 50 bhp / 5.800 rpm
Torque: 77 Nm / 3.000 rpm
Drivetrain: front wheels
Speed: 136 km/h
Curb weight: 932 kg
Wheelbase: 99.2 inch
Chassis: perimeter frame and subframe (with engine, gearbox, suspension) with a welded unibody
Steering: rack & pinion
Gearbox: four-speed manual / all synchromesh / floor shift
Clutch: hydraulic single dry plate disc
Carburettor: Solex 32 BISA
Fuel tank: 42 liter
Electric system: 12 Volts 40 Ah
Ignition system: distributor and coil
Brakes front: hydraulic discs
Brakes rear: hydraulic drums
Suspension front: independent trapezoidal double wishbones (A-arm, control arm), sway bar, longitudinal torsion bar + telescopic shock absorbers
Suspension rear: independent longitudinal trailing arm, sway bar, transverse torsion bar + telescopic shock absorbers
Rear axle: live helical type
Differential: spiral bevel
Wheels: 13 inch steel discs
Tires: 145/80 SR 13 radial ply
Options: three-speed automatic transmission, Ferodo semi-automatic three-speed gearbox (with electronically activated clutch),
Special:
- The 1100 Series (1967-1982), designed by Mario Felice Boano (Project 928), was SIMCA’s first front wheel drive car, one of the first cars with hatchback body configuration (Renault 16 was the first in 1965), at first shown on Sardinia and at the Paris Auto Show in 1967 and available as 3- and 5-doors model, as 3-door Fourgonnette (Van), as 2-door Fourgonnette (Van high roof), as 5-door Estate and as 2-door Coupé Utility (Pick-Up).
- In 1974 the 1100TI was launched as Europe's first "hot hatchback".
- They were assembled in Poissy - France, at the former Barreiros Diesel factory, Madrid - Spain and at Philipsons in Nyköping - Sweden.
- Some late ones are Chrysler-badged and Vans Dodge-badged to make it more complicated.
Manufacturer: Daimler-Benz AG, Stuttgart - Germany
Type: 190 SL W121 B II
Production time: May 1955 - February 1963
Production outlet: 25,881
Engine: 1897cc straight-4 Daimler-Benz M 121 B II SOHC (mounted on a detachable sub-frame)
Power: 105 bhp / 5.800 rpm
Torque: 155 Nm / 3.800 rpm
Drivetrain: rear wheels
Speed: 173 km/h
Curb weight: 1120 kg
Wheelbase: 94.5 inch
Chassis: self-supporting (frame-floor unit with welded unibody), front subframe with front suspension, engine block and steering
Steering: recirculating ball
Gearbox: four-speed manual / all synchromesh / floor shift
Clutch: single dry late disc
Carburettor: twin Solex 44 PHH 2-barrel downdraft
Fuel tank: 65 liter
Electric system: Bosch 12 Volts
Ignition system: distributor and coil
Brakes front: ATE-T-50 power assisted hydraulic 9.1 inch Duplex drums
Brakes rear: ATE-T-50 power assisted hydraulic 9.1 inch drums
Suspension front: independent trapezoidal double wishbones, sway bar, coil springs with rubber auxiliary springs + hydraulic telescopic shock absorbers
Suspension rear: independent single-joint swing axle with longitudinal sliding struts, coil springs with rubber auxiliary springs + hydraulic telescopic shock absorbers
Rear axle: swing axle
Differential: hypoid
Wheels: 5K x 13
Tires: 6.40 - 13
Options: power brakes (standard from 1956), small third-passenger transverse seat, removable hardtop roof, removable hardtop roof with storage box made of wood, high-gloss paint, safety belts in front (from 1961), cigarette lighter, leather seats, special interior with Becker Mexico radio and automatic antenna, whitewall tires, sealed beam headlights, fog lights, “English” instruments, bumper overriders, wheel trim rings, chrome stone guards, chrome rocker strip, jack-hole covers, eyebrow chrome on fenders, ski holders, various suitcases, two-tone colouring
Special:
- The SL was designed by Karl Wilfert, Friedrich Geiger and Walter Häcker and as prototype introduced at the 1954 New York Auto Show. The production model was revealed at the 1955 Geneva Auto Show.
- The “S” stands for “Sport”/ “Sports” while the “L” meant “Leichts”/ “Light”. Some say “SL” stands for “Sehr Leicht”/ “Very Light”.
- During its first years the 190 SL was available as a sports-racing model with small perspex windscreen and spartan one-piece leather covered bucket seats and aluminum doors.
- The 190 SL was primarily intended for the US market; a lot of comfort, but little speed.
- Some owners leave the hardtop permanently on their cars, but an official Coupé was never produced.
- All SLs were assembled in Untertürkheim, Stuttgart - Germany.
- From the total of 25,881 units built, 5,245 remained in Germany, 20,636 units were exported, including 10,368 units to the United States.
Messier 3 (also known as M3 or NGC 5272) is a globular cluster found in the northern constellation of Canes Venatici. The image below was taken on April 23, 2016 from Weatherly, Pennsylvania using a Meade 12” LX-90 telescope, Canon 6D camera both mounted on a Celestron CGEM DX mount. Total exposure time was 3-minutes using 15-second subframes at ISO 5000.
M3 is one of the three brightest globular clusters in the Northern hemisphere (along with M13 and M5). I wonder what our night sky would look like if we were inside a globular cluster? I found an interesting little article here (www.astronomy.com/magazine/press-releases/2014/05/july-2014) worth reading. Imagine a sky with a thousand stars as bright as Sirius!
Manufacturer: British Motor Corporation Limited (BMC), Longbridge - UK
Type: Sprite Mk I (AN5) (Frogeye-Bugeye-Froschauge)
Production time: mid-year 1958 - mid-year 1961
Production outlet: 48,987
Engine: 948cc straight-4 BMC Austin A-series 948 OHV
Power: 42.5 bhp / 5.000 rpm
Torque: 71 Nm / 3.000 rpm
Drivetrain: rear wheels
Speed: 133 km/h
Curb weight: 670 kg
Wheelbase: 80 inch
Chassis: all steel mono-construction with front engine subframe and welded all-steel body
Steering: rack & pinion
Gearbox: close-ratio four-speed manual / II, III and IV synchronized / floor shift
Clutch: 6½ inch single dry plate disc hydraulically operated
Carburettor: twin 1 ⅛ " SU H1 semi-downdraft
Fuel tank: 27 liter
Electric system: Lucas 12 Volts 43 Ah
Ignition system: distributor and coil with auto and vacuum control
Brakes front: Lockheed 7 inch hydraulic drums (2-leading shoe type)
Brakes rear: Lockheed 7 inch hydraulic drums
Suspension front: inmdependent wishbones, rapezoidal triangle cross-guides, helical springs + hydraulic Armstrong lever type shock absorbers (no shock absorbers mounted at the very early models)
Suspension rear: beam axle, radius arms, Panhard rod, anti-roll bar, 2 longitudinal links, 4 quarter-elliptic leaf springs + hydraulic Armstrong lever type shock absorbers
Rear axle: live three-quarter floating banjo type
Differential: hypoid 4.222:1
Wheels: 13 inch pressed steel discs four-nut fixing
Tires: 5.20 x 13 4-ply tubeless
Options: 948cc straight-4 BMC Austin A-series 948 OHV with Shorrock-Supercharger (59bhp, 87Nm, twin SU HS2 carburettors, top speed 148 km/h), factory hardtop, tonneau-cover, heater, demister, radio, wire spoke “knock-on” wheels, 6-ply tires, windscreen washer, rev.counter (when fitted incorporates headlamp high beam warning lamp), chromiun plated front bumper (standard on export models), laminated screen
Special:
- Austin-Healey was a British Sports Car maker founded in 1952 through a joint venture between the Austin division of the British Motor Corporation (BMC) and the Donald Healey Motor Company (Healey), a renowned automotive engineering and design firm. Leonard Lord represented BMC and Donald Healey his firm.
- BMC merged with Jaguar Cars in 1966 to form British Motor Holdings (BMH).
- Donald Healey left BMH in 1968 when it merged into British Leyland.
- Healey then joined Jensen Motors, which had been making bodies for the "big Healeys" since their inception in 1952, and became their chairman in 1972.
- Austin-Healey cars were produced until 1972 when the 20-year agreement between Healey and Austin came to an end.
- The Austin-Healey Sprite was designed by Donald Healey as a low-cost Sports Car and production began at MG's Abingdon factory in March of 1958. Later models were also assembled in Enfield, New South Wales and in Australia.
- A few months later, the new car was officially introduced in Monte Carlo, just prior to the Monte Carlo Rally.
- In the UK it's called "Frogeye", in the US "Bugeye" and in Germany "Froschauge".
- The headlights mounted on the top of hood were "lifted" because of U.S. Import legislations.
- Concealed flip-up headlamps were in the original drawings but high production costs canceled those plans.
- To build this little 2-door Roadster they used Austin, MG and Morris parts to keep the costs down.
- The two front chassis legs projecting forward from the passenger compartment mean the shell is not a full monocoque. The front sheet-metal assembly, including the bonnet (hood) and wings, was a one-piece unit, hinged from the back, that swung up to allow access to the engine compartment.
- The engine for example was also used in the Austin A35 and Morris Minor 1000 Series and the rack and pinion steering was derived from the Morris Minor 1000 Series and the front suspension from the Austin A35.
- It has no exterior door handles and no exterior boot lid (the back seats would need to be folded down to get access, incl. the spare tire).
- The entire front hood hinged upwards, allowing easy and convenient access to the engine.
- It was made at the MG works in Abingdon and sold for £669, so the intention of keeping the price low worked.
- By the quarter-elliptic rear springs, a simple self-supporting body and little weight, the Sprite is a rigid car to drive: But real fun to drive ☺☺!
- They are still very popular for club racing.
Flickr Friday theme, sub framing, my choice was the Albert Memorial, so majestic, and such a tribute of love from Queen Victoria to Prince Albert, a worthy scene for sub framing, Happy Flickr Friday.
Conet C/2020 F3 (NEOWISE) velow the Big Dipper, or in the claws of the Great Bear.
Stack of four subframes, each a 30 second exposure taken with a Canon EOS 550D at ISO 1600, 13mm, f/4.0, Cokin P820 diffusor, tracked with the Vixen Polarie star tracker.
The small galaxy NGC 5643, about 34 mill light years away in Lupus constellation. It's a Seyfert tipe galaxy. LRGB composite for 5 hours. GSO RC 30cms scope, camera STF8300/ AO-8, subframes of 12 min from my backyard observatory at La Colonia, Illapel, Chile. Not often imaged...
NGC 3718, also know as ARP 214, is a distorted spiral galaxy in the Constellation Ursa Major and is located about 59 Million Light Years away. Its distorted form is thought to be gravitational interaction with the other galaxy seen in this image - NGC 3729 - at some point in the distant past. These are all part of a group of galaxies known as the Ursa Major Cluster.
One interesting footnote - below NGC 3718 you can see a small grouping of elongated shapes, very close together. While not shown very well in this image, this is a small group 5 galaxies known as Hickson 56. These Galaxies are estimated to be about 400 Million Light Years away!
These galaxies are very far away and very small. The largest here only measure 2.9" x 2.4" in size. I mention this because I really don't have a scope that is setup for these very small galaxies. SO why did I chose this target? Well, part of me wanted to see what I could do with it. Another part is that this time of year the number of targets is a bit limited - especially what I can access due to the tree lines on my property.
This is the third and last image to come out of my 3 night imaging cycle starting on June 4th. While we had three clear nights, we also had some bands of thin clouds that came through and the overall sky transparency was far from great. The thin clouds are not enough to lose a guide star and disrupt your runs, but they can ruin the contrast on critical subframes. In this case, I had to remove roughly 1/3 of my subs and it reduced the number of Green frames I ended with to less than half what I had for the other channels.
When first processed this image - it looked pretty bad. So I went back to square one, and this time I spent a huge amount of time working on the image deconvolution step. Some people think of deconvolution as a "Sharpening" step. In fact it does something quite different. Working it the frequency domain, it attempt to restore lost information caused by the optics. This is very tricky to use properly and for my first year of astrophotography I could not get any good results out of this at all. Then I got some help from Gary Optiz and Dan Kutcha and I was able follow a "recipe" and get some small advantage to my images. This time though, I really dug into it - played around with every parameter and saw how it impacted the image. At the end of it all, I had finally figured out how to use it properly, and I had a version of the linear image that had more detail than I had before.
With this I went forward and processed the image doing the bulk of the work in Pixinsight, and then shifting to Photoshop for the last polishing phases. I also used Topaz Denoise AI, on a few trouble spots along the way.
In the end - I was happy with the final result - but I also knew that to get the results I really want here I need a few things: 1) a scope with more focal length and resolution 2) Clearer and more transparent skies. 3) and a lot more integration time.
Thanks for looking!
Pat
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Image Details
*Number of frames is after bad or questionable frames were culled.
53 x 120 seconds, bin 1x1 @ -15C, unity gain, ZWO Gen II L Filter
64 x 120 seconds, bin 1x1 @ -15C, Unity gain, ZWO Gen II R Filter
26 x 120 seconds, bin 1x1 @ -15C, unity gain, ZWO Gen II G Filter
46x 120 seconds, bin 1x1 @ -15C, unity gain, ZWO Gen II B Filter
Total of 6.3 hours
30 Darks at 300 seconds, bin 1x1, -10C, gain 100
30 Darks at 90 seconds, bin 1x1, -10C, gain 0
30 L Flats
30 R Flats
30 G Flats
30 B Flats
50 Bias
Capture Hardware:
Scope: William Optics 132mm F/7 FLT APO
Guide Scope: Sharpstar 66EDPHII
Camera: ZWO ASI1600mm-pro with ZWO Filter wheel with ZWO LRGB filter set,
and Astronomiks 6nm Narrowband filter set
Guide Camera: ZWO ASI290Mini
Focus Motor: Pegasus ZWO EAF 5V
Mount: Ioptron CEM 26
Polar Alignment: Ipolar camera
Software:
Capture Software: PHD2 Guider, Sequence Generator Pro controller
Image Processing: Pixinsight, Photoshop - assisted by Coffee, extensive processing indecision and second guessing, editor regret and much swearing….. Given the problems on this image, more than the usual whining….
Globular cluster M5 in Serpens Cauda.
This is an RGB integration of approx 30x180s subframes in each channel captured on a QHY163M camera, WO FLT110 and Optolong filters. Imaging was managed via SGP and PHD2, all post-processing was carried out in PixInsight.
Observed from Prachinburi, Thailand
Whilst Europe bakes in record breaking high temperatures, here in Wales we have another wet weekend.
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 01.50 and 02.14 EDT
* Altitude of centre of frame at time of exposures: ~40°, declining to 37°
* Temperature 17° C.
* Total exposure time: 12 minutes
* 70 mm focal length lens
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Description:
On of the brightest patches in the northern section of our home galaxy, the Milky Way, lies in the constellations Aquila (the Eagle) and Scutum (the Shield). This starcloud contains many open clusters of stars, together with foreground globules of cold dark gas that are the incubators of new star formation.
One of the most prominent star clusters in this area of the sky is M11, the so-called "Wild Duck" cluster, which is a favourite observing target of amateur astronomers with modest telescopes. M11 is the small bright blob in the lower right quadrant in this image. This is a rich open cluster of stars that looks like a duck in flight. See en.wikipedia.org/wiki/Wild_Duck_Cluster for more information about M11.
For a closer in view of M11 and the surrounding area, made in June 2020 with a 660 mm focal length telescope, click here:
www.flickr.com/photos/97587627@N06/50039721548
For a version of this photo WITH LABELS, showing constellation boundaries and the many open star clusters and dark nebulae, click on the RIGHT side of your screen, or click here:
www.flickr.com/photos/97587627@N06/52277624786
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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 Sky-Watcher EQ6-R Pro mount with a Kirk Enterprises ball head
Twelve stacked subframes; each frame:
70 mm focal length
ISO 5000; 1 minute exposure at f/4.5, unguided
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness, contrast, colour balance)
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The planetary nebula NGC2818, another southern target in the Pyxis constellation. This is an Ha L O3 RGB exposure for about 8.5 hrs; Scope GSO RC 30cms, camera Sbig STF8300/AO-8 operating at -35°C. 12 min subframes, from my backyard observatory at La Colonia, Illapel, Chile. This planetary nebula (PLN) doesn't belong to the open cluster (NGC 2818A), but have near the same distance to us.
La nebulosa planetaria denominada NGC2818 en la sureña constelación de Pyxis. No pertenece al cúmulo abierto (NGC 2818 A), sino que está por coincidencia a una distancia y línea de visión similares. Exposición con filtros Ha-L-O3 y RGB, subframes de 12 minutos, telescopio GSO RC de 30cms, cámara Sbig STF8300/AO-8 operando a -35°C, desde mi observatorio casero en La Colonia, Illapel, Chile.
Photo taken in 1987. Image is a scan off of a 3-1/2” x 5” print.
There are 4 typical features of Britain’s Greeves brand motorcycles that are visible here. The leading arm front suspension, the cast alloy I-beam subframe, the Villiers 2-stroke engine and the blue livery with distinctive Greeves’ script.
I think it’s a beauty!
Manufacturer: Chrysler Group LLC for Plymouth, Auburn Hills, Michigan - USA
Type: Fury V8 Series RP2-H27 Convertible
Production time: 1961
Production outlet: 6,948
Engine: 5208cc V-8 Fury V-800 OHV I-head
Power: 230 bhp / 4.400 rpm
Torque: 461 Nm / 2.400 rpm
Drivetrain: rear wheels
Speed: 170 km/h
Curb weight: 1804 kg
Wheelbase: 118 inch
Chassis: box frame with crossbars and unibody body with bolted-on subframe
Steering: worm & three tooth roller
Gearbox: three-speed manual / II and III synchronized / steering column shift
Clutch: 10 inch single dry plate disc
Carburettor: Carter or Stromberg dual troath
Fuel tank: 79 liter
Electric system: Autolite 12 Volts 50 Ah
Ignition system: distributor and coil
Brakes front: 11 inch hydraulic self-adjusting internal expanding drums
Brakes rear: 11 inch hydraulic self-adjusting internal expanding drums
Suspension front: independent ball joints, upper trapezoidal wishbones, upper triangular cross-link, lower simple arm with shock mounted tension strut and along lying torsion bars (Torsion-Aire System) + Oriflow hydraulic telescopic shock absorbers
Suspension rear: beam axle, coil link system, 2½ inch outboard mounted asymmetrical longitudinal leaf springs + Oriflow hydraulic telescopic shock absorbers
Rear axle: live semi-floating type
Differential: hypoid 3.58:1
Wheels: 5K - 14 inch steel discs safety rim type
Tires: 7.5 x 14 4-ply
Options: pushbutton-controlled Torque Flite three-speed automatic transmission, Power Flite two-speed automatic transmission, Sure-Grip differential, power brakes, power steering, DeLuxe steering wheel, power windows, power seats, bucket seats, fold-down armrests, Air Conditioning, pushbutton Hi-Fi radio, rear seat radio speakers, load leveling system, push-button heater / defroster, windshield washer (foot operated), variable speed windshield wipers, outside left mirror, back-up lights, Solex tinted safety glass, bumper guards, colour-matched carpeting, child-guard safety locks, inside “Day/Nigt” rear view mirror, safety-padded sun visors, parking brake warning light, safety seat belts (front and rear), rear window defogger, dual exhaust mufflers, emergency warning lights, custom curb signals,
Special:
- The Plymouth automobile was introduced on July 7, 1928. It was the Chrysler Corporation's first entry in the low-priced field, which at the time was dominated by Chevrolet and Ford.
- The logo featured a rear view of the Mayflower ship which landed at Plymouth Rock, hence the name "Plymouth" as the brand.
- The origins of the first Plymouth can be traced back to the Maxwell automobile. When Walter Chrysler took over control of the trouble-ridden Maxwell-Chalmers car company in the early 1920's, he inherited the Maxwell as part of the package. After he used the company's facilities to help create and launch the Chrysler car in 1924, he decided to create a lower-priced companion car. So for 1926 the Maxwell was reworked and re-badged as a low-end Chrysler model. Then at the end of the decade this model was once again reworked and re-badged, this time to create the Plymouth.
- The word "fury" denotes a type of anger, inspired by the Furies, mythological creatures in Ancient Greek and Ancient Roman mythology.
- From 1960 the name Fury was no longer used for the original Sports Sedans, but for the most exclusive line Plymouth's. The successors of the original type Fury were called Sport Fury since then.
- The 1961 Fury V8 Series RP2-H, with a reskin “below-the-beltline” and its pinched aluminum grille, was available as this 2-door Convertible, as 2-door Hardtop (16,141 units built), as 4-door Hardtop (8,507 units built) and as 4-door Sedan (22,619 units built).
- This second generation mid-sized Fury’s (1960-1961), designed by Virgil Exner, were assembled in Detroit, Michigan (Lynch Road) and in Windsor, Ontario (Canada).
Total exposure was 2 hours 32 minutes at ISO 800 (61 subframes of 150 seconds were stacked). I used Canon 1000D without IR-filter and telescope-refractor Sky-Watcher ED-80 (F=510mm, D=80mm, f/6.4).
This is a detailed Moon mosaic using an infrared pass filter. The mosaic is made up of 24 individual frames, each one is a stack of the best 40% of 1,200 subframes. Taken in trying conditions with occasional rain causing me to dive for cover and protect the scope and mount before I started. By the time I had finished and closed up my home-built observatory the rain had started in earnest.
Peter
Equipment:
ZWO ASI174MM Cool mono CMOS camera, IR pass filter, 14inch f/10 LX200 SCT OTA, EQ8 mount
This is the nebulosity surounding attractive star cluster NGC 6910 in Cygnus. The image is a stack of eleven five-minute subframes in Hydrogen Alpha.
Peter
Equipment:
Atik 460EX mono CCD, 130mm triplet APO, EQ8 mount. As part of a test of accuracy in RA of my EQ8 all images were captured unguided.
Manufacturer: Daimler-Benz AG, Stuttgart - Germany
Type: 190 SL 121-Serie W121 B II BM121.042 Roadster
Production time: May 1955 - February 1963
Production outlet: 25,881
Engine: 1897cc straight-4 Daimler-Benz M 121 B II SOHC (mounted on a detachable sub-frame)
Power: 105 bhp / 5.700 rpm
Torque: 142 Nm / 3.200 rpm
Drivetrain: rear wheels
Speed: 171 km/h
Curb weight: 1164 kg
Wheelbase: 94.5 inch
Chassis: self-supporting (frame-floor unit with welded unibody), front subframe with front suspension, engine block and steering
Steering: recirculating ball
Gearbox: four-speed manual / all synchromesh / floor shift
Clutch: single dry late disc
Carburettor: twin Solex 44 PHH 2-barrel downdraft
Fuel tank: 65 liter
Electric system: Bosch 12 Volts 56 Ah
Ignition system: distributor and coil
Brakes front: ATE-T-50 power assisted hydraulic 9.1 inch Duplex drums
Brakes rear: ATE-T-50 power assisted hydraulic 9.1 inch drums
Suspension front: independent trapezoidal double wishbones, sway bar, coil springs with rubber auxiliary springs + hydraulic telescopic shock absorbers
Suspension rear: independent single-joint swing axle with longitudinal sliding struts, coil springs with rubber auxiliary springs + hydraulic telescopic shock absorbers
Rear axle: swing axle
Differential: hypoid 3,90:1
Wheels: 5K x 13
Tires: 6.40 - 13 Sport
Options: power brakes (standard from 1956), small third-passenger transverse seat, removable hardtop roof, removable hardtop roof with storage box made of wood, high-gloss paint, safety belts in front (from 1961), cigarette lighter, leather seats, special interior with Becker Mexico radio and automatic antenna, whitewall tires, sealed beam headlights, fog lights, “English” instruments, separate cross seat in the back, bumper overriders, wheel trim rings, chrome stone guards, chrome rocker strip, jack-hole covers, eyebrow chrome on fenders, ski holders, various suitcases, two-tone colouring
Special:
- Established in 1871, Benz & Cie. was the most important of several companies founded by Karl Benz.
- Daimler Motoren Gesellschaft (DMG) was founded by Gottlieb Daimler and his partner Wilhelm Maybach in 1890. Daimler died in 1900 and Maybach left DMG in 1907.
- By then, Benz & Cie. and DMG were rivals.
- In 1924, owing to economic necessity after World War I, they entered into an "Agreement of Mutual Interest", allowing each company to manufacture and sell their products under their original brand names. After the official merger in June 28, 1926, the firm became known as Daimler-Benz.
- The SL was designed by Karl Wilfert, Friedrich Geiger and Walter Häcker and as prototype introduced at the 1954 New York Auto Show. The production model was revealed at the 1955 Geneva Auto Show.
- The “S” stands for “Sport”/ “Sports” while the “L” meant “Leichts”/ “Light”. Some say “SL” stands for “Sehr Leicht”/ “Very Light”.
- During its first years the 190 SLR was available as a sports-racing model with small perspex windscreen and spartan one-piece leather covered bucket seats and aluminum doors.
- The 190 SL was primarily intended for the US market; a lot of comfort, but little speed.
- Some owners leave the hardtop permanently on their cars, but an official Coupé was never produced.
- All SL's were assembled in Untertürkheim, Stuttgart - Germany.
- From the total of 25,881 units built, 5,245 remained in Germany, 20,636 units were exported, including 10,368 units to the United States.
IC443 is a supernova remnant about 5000 light years distant. For this false colour image I captured light emitting from hydrogen, sulphur and oxygen ions and then combined in a HSO tone map i.e. hydrogen is red, sulphur is green and oxygen is blue. Throughout much of the jellyfish hydrogen and sulphur emissions are equally strong giving yellow, while oxygen is relatively weak and is only visible around the edges.
The image is an integration of 12 hours of H, 13 of O and 14 of S captured in 10 minute subframes on a QHY163M camera with Optolong filters, The telescope was a WO FLT110 with Flat4 and this was mounted on a Skywatcher AZ-EQ6. Imaging was managed by Sequence Generator Pro with PHD2 for guiding and all post-processing was carried out in PixInsight.
Observed from Prachinburi, Thailand
Moon: Southwestern Quadrant Mosaic
May 8, 2017
This was an experiment to determine a way to create image files large enough for making large, high quality prints. It was also my first use of AutoStakkert!2 (which I LIKE!).
Mosaic of seven subframes, each frame a stack of the best 1666 of 2222 video frames.
Raw video processed in PIPP and converted to .ser files, stacked in AutoStakkert!2, wavelets applied in Registax 6.
Subframes merged with Microsoft ICE. Final processing in Photoshop CC2017.
ASI ZWO290MM Camera
Optolong IR Pass (685nm) Filter - 1.25"
Explore Scientific 3x Barlow lens
Explore Scientific ED80 APO Triplet f/6 Refractor, 480mm focal length
Celestron Advanced VX EQ Mount
Comet C252/P, captured today (2016-04-30) between 0:45h and 2:45h UT in Tenerife, 1180 m altitude. After stacking the subframes I was very surprised by these faint HII regions (unknown to me; perhaps someone can give me some information) at top of the coma and also under the near coma part of the tail (giving false red color to it).
Coma diameter is 37 ' and tail length about 1 degree.
Parallel exposure resulting in a LRGB image.
RGB: 120 x 45 sec, Sony A7s (CentralDS modded), Hyperstar 14"/F1.9, ISO3200, IR block filter
Monochrome: 40 x 180 sec, Starlight Xpress SX-36, RASA 11"/F2.2, L-pro filter
Both mounted at a ASA DDM 85 (unguided)