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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 23.10 and 23.13 EDT
* Altitude of comet's head at time of exposures: ~12°
* Temperature 17° C.
* Total exposure time: 1.25 minutes
* 660 mm focal length telescope
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Description:
This comet has been touted as the brightest in a generation. The last comet that I can remember being this bright was Comet Hale-Bopp in 1997, which was undoubtedly the best comet that i will have seen in my lifetime.
This visitor to the inner solar system was discovered on March 20 this year by astronomers during the NEOWISE mission of the Wide-field Infrared Survey Explorer (WISE) space telescope (hence the name of the comet). It reached naked eye visibility this month, and I finally got into a dark sky - with no Moon in the sky to wash out the fainter outer reaches of the tail - on July 17.
In this view we see the bright head of the comet at the left side, with the broad yellowish dust tail fanning out to the right, and the fainter, narrow bluish plasma or ion tail bordering the dust tail at the top.
At the time of this photo, Comet Neowise was 78 million km (0.52 astronomical units ("AU") - the distance from Earth to the Sun) from the Sun, and 109 million km (0.73 AU) from Earth, and shone at a brightness of third magnitude, with a 10 degree tail.
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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; 15 sec. exposure at f/5.2; unguided
With long exposure noise reduction
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness / contrast)
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Happy 4th July fireworks!
Captured in wisconsin
Gear:
ES80 apo + 0.8x focal reducer ( f/4.8 with an effective focal length of 384 mm)
iEQ45 pro, guided with PhD
30min integration (1min subframes)
Olympus E-M5, ISO 1000, auto dark subtraction filter on
Stacked in Nebulosity, tweaks in Lightroom
Fireball captured in one frame was overlain on the stacked image in Photoshop.
His Name is Stephan. and he is german. we travelled around with him for a couple of days and ended up sharing a bamboo house boat in Kerela for a night. During My three month stay in india, i met many different people from all over the world. After meeting Stephan, i can now say that Germans are my favorite! i love the ripples around his body and how they subframe him into a little motif
Sensia 200 @ 800 cross processed at a shitty lab in Mumbai
Tech: Pentax K1000 35mm
IC1805, the Heart Nebula with the open star cluster Melotte 15 inside. About 6500 light years away from us.
238 Subframes of 3 minutes each, just under 12 hours in total. +
200 calibrationframes.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 03.00 and 03.24 EDT
(285 km by road north of Toronto)
* Temperature 12° C.
* Total exposure time: 11 minutes
* 540 mm focal length telescope
___________________________________________
Description:
This faint and visually very elusive nebula can be photographed to advantage only in a good dark sky.
Known as the "California Nebula" because of its shape, this glowing cloud of red hydrogen gas is quite large; about five times as long as, and a little wider than, the Moon appears in our sky. The nebula is located 1,000 - 2,000 light years from our solar system, and is about 100 light years from end to end. Radiation from the nearby blue-white star Xi Persei (the brightest star in the frame, below the nebula) causes the nebula to fluoresce.
The California Nebula was discovered by famed American astronomer E.E. Barnard in 1884-5, just in time to be added to Dreyer's New General Catalog (NGC).
For a version of this photo WITH STAR LABELS, click on your screen to the RIGHT of the photo, or click here:
www.flickr.com/photos/97587627@N06/28723113074
___________________________________________
Technical information:
Nikon D810a camera body on Teleview 101is apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Eleven 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 (brightness, contrast, colour balance, levels)
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This is my best comet image to date. I can see a fair amount of detail in the dust tail, and a decent showing of the "forward" pointing ion tail.
I am not able to identify the fuzzy blob seen directly above the nucleus as seen in this image. PixInsight Annotation script does not show an object at this location. I cannot see an outburst in any of the subframe data. Please comment with any ideas.
ZWO ASI6200MM-P/EFW 2" x 7 (L)
Tele Vue NP101 (4" f/4.3)
Losmandy G11
Luminance filter only.
2s x 24 subs = 2m total integration time
Processied in PixInsight
Finished in Affinity Photo
The Packard Station Sedan was a pseudo luxury station wagon model produced by the Packard Motor Car Company of Detroit, Michigan between 1948 and 1950, using the Packard Eight platform. By offering the Station Sedan Packard could market a vehicle with station wagon attributes, but without the investment cost associated with a complete station wagon development program.[2]
The Station Sedan used a combination of steel framing and body parts along with structural wood panels made from northern birch to create a "woody" station wagon-like car due to the growing popularity of them after World War II. Unlike other woody wagons of the day, which used wooden passenger compartments mounted to chassis of a particular car, the Station Sedan used a steel subframe and steel passenger doors onto which hard wood panels were mounted. The only wooden door on the vehicle was the rear gate assembly.[3] Unlike competitor station wagons from Buick, Chrysler and Mercury, the Packard's length was not long enough to accommodate optional third row seating.[3]
Neither a sedan, nor true station wagon, the Station Sedan enjoyed limited success, with a listed retail price of US$3,459 ($38,958 in 2021 dollars [4]) for its final year of 1950, and was discontinued when the 1951 Packard models were introduced.
The Wester Veil with more data 7,5h
This is the first time I use this method on pixinsight, (HOO combination).
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -5°C
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher EQ5
Filter: Optrolong L-eXtreme
-Acquisition-
Light : 90x300s (7,5h) at Gain:101 Offset:49
Dark,Flat,Offset
Date : Take on 5 night from 06/13/2021 to 07/12/2021
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
All Processing in Pixinsight
Use EZ_Processing Suite(by darkarchon) in Pixinsight
ForaxX Color combination thecoldestnights.com/
-Pre Processing-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Drizzle x2
Crop the black bands from the stacking
-Processing-
Dynamic Background Extraction
Split RGB Channels
Combine 70% of green and 30% of blue into 'Oiii'
Rename R to Ha
EZ_SoftStretch Ha and Oiii
Pixelmath: HOO combination with ForaxX expressions
R = Ha
G = ((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
B = Oii
Curve Transformation ( RGB/K, Hue, Saturation,...)
SCNR (Green 40%)
EZ_HDR
EZ_Star Reduction
Clear skies !
Manufacturer: Alvis Car and Engineering Company Ltd, Coventry - UK
Type: TB 21 Roadster / 3 Liter Sports
Production time: mid-year 1950 - mid-year 1952
Production outlet: 31
Engine: 2993cc straight-6 OHV seven-bearing short-stroke engine (by ALVIS)
Power: 96 bhp / 4.000 rpm
Torque: 186 Nm / 1.800 rpm
Drivetrain: rear wheels
Speed: 143 km/h
Curb weight: 1280 kg
Wheelbase: 111.5 inch
Chassis: ladder frame with a bolted subframe and separate steel body (by AP Metalcraft, Coventry - UK)
Steering: Marles spindle & nut
Gearbox: four-speed manual / II, III and IV synchronized / floor shift
Clutch: Borg & Beck type 9 A6-G single dry plate disc
Carburettor: single horizontal 38 mm SU H4 (+ electric pump from petrol tank)
Fuel tank: 65 liter
Electric system: Lucas 12 Volts 63 Ah
Ignition system: distributor and coil
Brakes front: hydraulic 11 inch Lockheed drums (two-leading-shoe type)
Brakes rear: hydraulic 11 inch Lockheed drums (two-leading-shoe type)
Suspension front: independent trapezoidal triangle crossbars, silentbloc bushes, sway bar, coil springs + double acting Armstrong hydraulic piston dampers
Suspension rear: rigid axle, silentbloc bushes, longitudinal semi-elliptic leaf springs + double acting Armstrong hydraulic piston dampers
Rear axle: live semi-floating type
Differential: hypoid bevel final drive 3.77:1
Wheels: 15 inch steel discs
Tires: 6.00-15
Options: cloth cap, steel spoke wheels
Special:
- This 3 Liter Roadster (or Sports), based on the TA 14, was up against the Jaguar XK 120, released a year earlier the Sports Car market.
- It was not a success for Alvis (only 31 sold!!!), while Jaguar sold thousands XK 120’s (XK 120 Roadster: 7,612 units built, XK 120 Cabriolet: 1,765 units built and XK 120 Coupé: 2,678 units built).
- The Alvis TB 21 Roadster, assembled in Coventry, was too expensive at £1598 on the home market.
(español abajo) The pencil nebula, NGC 2736 in Vela, a very difficult target, about 24 hours in a mix HOO-L+HOO/LRGB (9 hours in O3 and 5 hours in Ha) from my backyard obs in La Colonia, Illapel, Chile. GSO RC 30cms scope, camera STF8300/AO-8, 8 and 16 min subframes at -35°C. Maxim-Registar-CCDStack-Photoshop software. This picture is dedicated to my daughters. Comments welcome, have a nice day !
La nebulosa del lápiz, también conocida como "el rayo de Herschel", NGC 2736, un blanco difícil en la constelación de Vela. Alrededor de 24 horas d exposición en una mezcla HOO-L+HOO/LRGB (con 9 horas de filtro O3 y 5 de H alfa), desde mi observatorio en La Colonia, Illapel, Chile. Telescopio GSO RC de 30 cms, cámara STF8300/AO-8, tomas de 8 y 16 minutos a -35°C. Softwares Maxim-Registar-CCDStack-Photoshop. Este trabajo está dedicado a mis hijas. Comentarios bienvenidos, que tengan un buen día...
M-1, aka NGC 1952.
en.wikipedia.org/wiki/Crab_Nebula
This is a tiny target, so I used my intrepid C8 since it has a good reach. However, there's nothing like a long focal length telescope (f/10) and a narrowband filter (L-Ultimate) to humble you. I had a hard time polar aligning and framing using NINA because of the narrow FOV and dark filter. NINA complained that there were not enough stars to plate solve. I used long exposures and high gain, but with no success. I removed the filter, refocused, but plate solving would not work.
I switched to SharpCap and it performed better, but had its own idiosyncrasies. I selected dithering while guiding and left the default settings on. When the mount dithered, the target moved from one side of the frame to the other. Siril was unable to align the subframes in post-processing, so I dug out my old copy of Nebulosity 4.0 and did a manual two star alignment that seemed to work. Because of the stacking artifacts, I had to severely crop the image.
The image looks more like a gold nugget than a supernova remnant. Not the best output, but I learned a lot, like use a focal reducer next time.
February 1, 2026, Tallahassee, Florida, Bortle 7, full moon. Seeing was poor and there were thin layers of high altitude cirrus clouds passing by while imaging.
Old "Halley Era" Celestron C8 (1988 more or less) at native f/10, ASI533MC Pro, L-Ultimate narrowband filter, iOptron HAE29; total of 44 120-second light frames with calibration frames. Gain 100, Offset 10. Stacked and processed using Nebulosity 4, Siril, and Photoshop. Astronomy Tools had this remark about this scope and camera combination: "The ideal pixel size for Poor Seeing (4-5" FWHM) seeing is: 1.33 - 2.5" / pixel. This combination leads to slight over-sampling. Will require a good mount and careful guiding."
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
* Temperature 11 degrees C.
Total exposure time: 15 minutes.
* 540 mm focal length telescope
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Description:
This is a large and quite faint emission nebula and star forming region over 100 light-years across, located about 2,400 light-years away in the constellation Cepheus. It is energized by the bright, bluish central multiple star. The very small Elephant’s Trunk nebula (IC 1396A) is inside the dark elongated globule just to the right of centre.
From one web site: "The brightest star (38,000 times brighter than the Sun) ... [at the lower left edge of the nebula] is mu Cephei. It is a red supergiant star with a diameter larger than the orbit of Saturn, some 2536 times the diameter of the Sun. It is one of the largest stars we know of. Also called Herschel’s Garnet Star, mu Cephei is a variable star that varies in magnitude from 3.4 to 5.1 over a period of approximately 730 days."
For a view of this same nebula made with a 200 mm lens on July 1 of this year, click here:
www.flickr.com/photos/97587627@N06/28078652915
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@N06/31041148481
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Technical information:
Nikon D810a camera body on Teleview 101is apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Fifteen stacked frames; each frame:
540 mm focal length
ISO 6400; 1 minute exposure at f/5.4; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (brightness, contrast, colour balance, levels)
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Widefield shot of M31 - taken with waxing crescent in the night sky
Taken using a 55-250mm telephoto lens at 170mm f/7.1
Canon EOS 700D on a HEQ5 Pro mount
1 hr 30 mins of subframes, 3 mins each at ISO 800
Stacked and processed in DSS and GIMP.
NGC 4039, the antennae galaxy, LRGB 8.5 hours total, 16min subframes, telescope GSO 30cms f8 native (mild descollimation), camera STT8300 at -35°C, AO-8 unit; from La Colonia, Illapel, Chile. This is a tribute to my Master (RIP) Daniel Verschatse who won a prize with this same object years ago.
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 23.10 and 23.13 EDT
* Altitude of comet's head at time of exposures: ~12°
* Temperature 17° C.
* Total exposure time: 1.25 minutes
* 105 mm focal length lens
___________________________________________
Description:
This comet has been touted as the brightest in a generation. The last comet that I can remember being this bright was Comet Hale-Bopp in 1997, which was undoubtedly the best comet that i will have seen in my lifetime.
This visitor to the inner solar system was discovered on March 20 this year by astronomers during the NEOWISE mission of the Wide-field Infrared Survey Explorer (WISE) space telescope (hence the name of the comet). It reached naked eye visibility this month, and I finally got into a dark sky - with no Moon in the sky to wash out the fainter outer reaches of the tail - on July 17.
In this view we see the bright head of the comet at the bottom near the horizon, with the broad yellowish dust tail fanning out to the right, and the fainter, narrow bluish plasma or ion tail bordering the dust tail to the left.
At the time of this photo, Comet Neowise was 78 million km (0.52 astronomical units ("AU") - the distance from Earth to the Sun) from the Sun, and 109 million km (0.73 AU) from Earth, and shone at a brightness of third magnitude, with a 10 degree tail.
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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 mount with a Kirk Enterprises ball head
Six stacked frames; each frame:
105mm focal length
ISO 3200; 30 sec. exposure at f/5.6; unguided
With long exposure noise reduction
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness / contrast, colour balance, deblurring of tree horizon)
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This image of NGC1499 was generated from the monthly image data given to iTelescope subscribers. The data was captured on their T80 telescope at E-Eye Fregenal de la Sierra on 27/10/2023.Because so few files had already been calibrated, the master files were created in AstroPixelProcessor before being processed in Pixinsight. The image is made up from 6 x LRGB 180s subframes giving a total integration time of 1.2 hours.
Scrapped, the last MOT expired September 2012 when it failed a test. Rotten front subframe mounts.
Seen in Fratton.
Our closest neighbor, the Andromeda Galaxy.
Another shot made with the new telescope OS Veloce RH200.
Also this image is a quite short expusure of the subject in a 4.5° field of view.
LLRGB made with all 10min subframes time are 30:30:30:30. A car passed during the exposure so a subtle reflection in form of an arch is visible on the image... What a pity.
Thanks for watching!
Manufacturer: Renault S.A., Boulogne-Billancourt (Paris) - France
Type: NN Torpédo 6CV
Production time: 1924 - 1928
Production outlet: ± 150,000
Engine: 951cc straight-4
Power: 15 bhp / 1.980 rpm
Drivetrain: rear wheels
Speed: 60 km/h
Curb weight: 810 kg
Wheelbase: 104.7 inch
Chassis: ladder frame with wodden subframe and separate body
Steering: screw and nut
Gearbox: three-speed manual + reverse / floor shift
Electric system: Bosch 12 Volts with starter/generator by Rhone, Paris
Ignition system: Bosch magneto
Brakes front: mechanical drum brakes
Brakes rear: mechanical drum brakes
Suspension front: semi-elliptic leaf springs
Suspension rear: transverse leaf springs
Rear axle: live
Differential: spiral bevel
Wheels: closed discs
Special:
- The model NN, aka Renault 6CV, was designed by Louis Renault and at first shown at the 1924 Mondial de l'Automobile in Paris.
- In the early '20s Renault released a series of new models, recognizable by their "cheese plate radiator” or "shovel-nosed" hood, with prominent "gills" on the sides of the bonnet/hood for cooling.
- The radiator was placed behind the engine, with the gas tank behind that (note the two caps on the hood).
- In 1927 it became the first car to make a solo trip across the Sahara Desert.
- The NN Series was assembled in Billancourt, France and available as this 2-door Roadster, as 2-door Coupé Limousine, as 4-door Torpédo, as 4-door Landaulet-Taxi, as 4-door Limousine and as rolling chassis for coachbuilders.
- In 1928 the larger and heavier NN2 was introduced (1928-1929), recognizable by the bumpers.
The Tyne ferry "Pride of the Tyne" viewed within the mechanism which raises and lowers the landing with the tides.
Full write up here: theastroenthusiast.com/a-luminous-m101-with-outer-spiral-...
Big, beautiful spiral galaxy M101 is one of the last entries in Charles Messier’s famous catalog, but definitely not one of the least. About 170,000 light-years across, this galaxy is enormous, almost twice the size of our own Milky Way galaxy. M101 was also one of the original spiral nebulae observed by Lord Rosse’s large 19th century telescope, the Leviathan of Parsontown. M101 shares this modern telescopic field of view with more distant background galaxies, foreground stars within the Milky Way, and a companion dwarf galaxy NGC 5474 (upper left). The colors of the Milky Way stars can also be found in the starlight from the large island universe. Its core is dominated by light from cool yellowish stars. Along its grand design spiral arms are the blue colors of hotter, young stars mixed with obscuring dust lanes and pinkish star forming regions. Also known as the Pinwheel Galaxy, M101 lies within the boundaries of the northern constellation Ursa Major, about 23 million light-years away. Its companion NGC 5474 has likely been distorted by its past gravitational interactions with the dominant M101.
I chose to dump a lot of integration time with longer subframes (28 hours worth of 3 minute frames) to try to reveal some of the fainter outer arms not shown in most astrographs. I think I succeeded quite well – you can see the three fainter arms take shape on the left side of the galaxy. Compared to my last image of M101, this is quite the improvement!
You can view all the background galaxies in this image: flic.kr/p/2n8WdGu
Website: theastroenthusiast.com/
Instagram: www.instagram.com/the_astronomy_enthusiast/
Full version: theastroenthusiast.com/wp-content/uploads/2021/12/rosette...
Starless version: theastroenthusiast.com/wp-content/uploads/2021/12/starles...
I highly recommend opening the full version to take a closer look at some of the finer details revealed by the large integration time. A starless copy is also provided to show off fainter detail.
This incredibly detailed image of the Rosette nebula was created from more than 110 hours of exposure across three continents — Europe, USA, and Oceania. We combined 1064 subframes and 6791 minutes of exposure to reveal faint details previously masked by lower amounts of data. The high exposure time also allowed us to sharpen fine features, giving the image more contrast and revealing more fine structures.
On the top of the image lies a wispy structure of bok globules and dust, framed by the glowing ionized gas behind it. The center of the image displays the faint particle streams created by sulfur and oxygen gas blown away from the bright cluster of stars. Just below the center of the rosette nebula lies a beautiful mountain-like structure created by sulfur and hydrogen gas. Through the center of the image, faint wisps of glowing sulfer gas are visible above the dominant oxygen gas.
Credits:
Image Acquisition: Jens Unger (www.instagram.com/jazz.astro/), Rob Olson (www.instagram.com/the.robservatory/), Dominic Annis (www.instagram.com/domnuch/), Justin P. (www.instagram.com/justadudewitha_camera_/), Amrit Prasad (www.instagram.com/amrit.insta/), Tommy Lease (www.instagram.com/colorado_astro/), Jay Aigner (www.instagram.com/aignerastro/)
Image Processing: William Ostling (theastroenthusiast.com/), Justin P. (www.instagram.com/justadudewitha_camera_/)
We would love to have you in our astrophotography group! The link to join is in our Instagram bio: www.instagram.com/friendly.cosmos/
It's not the best time here for astrophotography, the nights are short the summer solstice approaches.
But I managed to have 3 hours of data on the Western Veil
The Western Veil (also known as NGC 6960) is a part of the Cygnus Loop a large a supernova remnant whose explosion dates back 10.000 years.
The Western Veil is a nebula made of ionized gas and dust located about 1,400 light years from Earth
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -5°C
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher EQ5
Filter: Optrolong L-eXtreme
-Acquisition-
Light : 36x300s ( 3h ) at Gain:101 Offset:49
Dark,Flat,Offset
Date : Take on 3 night 06/13-15/2021
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
All Processing in Pixinsight
Use EZ_Processing Suite(by darkarchon) in Pixinsight
-Pre Processing-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Drizzle x2
Crop the black bands from the stacking
-Processing-
Linear Fit
Channel Combination
DBE
EZ_Deconvolution
Background Neutralization
Photometric Color Calibration
SCNR (green 50%)
EZ_Denoise
EZ_Soft Strech
EZ_HDR
Curves Transformation with mask on nebula for Saturation, Hue and K channel
EZ_Star Reduction
Clear skies !
This a monochrome image that was captured in Ha narrowband only, with subframes of 10 minutes each. I had intended to capture OIII and SII as well, but the target was above my limited southern horizon for only about an hour. More to come if I can get some more limited "peeks" before its gone for this season, and certainly more to come if I go to WInter Star Party next year.
Equipment:
ZWO ASI6200MM-P/EFW 2" x 7 (Ha)
TeleVue NP101is (4" f/4.3)
Losmandy G11
Software:
Captured in NINA
Processed in PixInsight
Integration:
Ha 4 x 600s = 0:40
Manufacturer: Auto Union AG, Auto Union AG, Chemnitz - Germany
Type: F4 Series 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 dashboard, 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.
It was mostly cloudy this weekend so I didn't get much of a chance to add to the Orion images, I went out and tried shooting at a place I thought would make a good winter shooting location based on light pollution maps (easy access, supposedly bortle 3), turned out not so great, guess I'll have to keep searching. I also changed up my setup a little bit, opened up the legs on my tripod and hung a 20 pound dumbbell under it for better stability, now it's rock solid. I tried shooting 5 minute exposures with my D7000 and Samyang 135mm lens, it seems like I can get to 5 minutes fairly consistently with not too many subs that have to be thrown out (keeper rate of about 75% I'd guess), but once I go above 5 minute exposures the keeper rate drops down to probably 30%. The periodic error (?) of the mount is 10 minutes from what I've read so I guess once you get up to that length of exposure you are running into mount limitations. I'm thinking of buying a guidescope and camera and trying out some guiding with the mount to see if I can improve the keeper rate, I'd really love to take some super long exposures (like 10 minutes) to really bring out the dust around this area as well.
So I ended up only getting another 6 subs out of all the ones I shot thanks to clouds and tracking error, I decided to go back and re-calibrate, register, and stack in PixInsight this time using the subframe selector script to weight the subs prior to registering/stacking. I also tried not going to wild on the post processing and just focusing on bringing out the dust without destroying the image with noise.
1 stack of 58 60s images, Canon 800D at ISO 800, Canon 400mm f5.6 lens at f6.3, iOptron Skyguider Pro tracker. 120 darks, 120 biases. Processed in PixInsight as below
* CC defect list + master dark (sigma = 8)
* Subframe selection
30*(1-(FWHM-FWHMMin)/(FWHMMax-FWHMMin))
+ 30*(1-(Eccentricity-EccentricityMin)/(EccentricityMax-EccentricityMin))
+ 20*(SNRWeight-SNRWeightMin)/(SNRWeightMax-SNRWeightMin)
+ 20
Eccentricity < 0.7 && SNRWeight > 1 && FWHM < 5. Keep frames 7173 and 7177 even though they failed the rejection conditions, for meteors
* star alignment:
img 8411 ref, frame adaptation (let's see if this works)
* ESD integration, range exclude
* drizzle integration, gaussian kernel\
*****Linear processing
*** Initial
* Crop
* DBE tolerance 3
*** CC
* PCC on Pleiades, default settings pixel size 2, background neutralization upper limit 0.0012
*** Decon
* star mask creation: extract luminance get starmask with starnet, then range mask 0.1-1 (1). from stretched luminance range mask 0.55-1 (2). Pixel math max the 2 as binary_star_mask. 4x dilate, 6x convolve
* PSF - ezdecon script
* background mask -ezdecon script and curves
* with background mask on, inverted, apply decon 100 iterations on luminance, deringing global dark 0.01 light 0.002 and local deringing with binary star mask, wavelet regularization
*** Denoise
Using jonrista.com/the-astrophotographers-guide/pixinsights/eff... as implemented by EZSuite.
* EZDenoise, TGV 1500 edge 1e-5, default MMT
***** Nonlinear
*** Initial stretch
* Masked stretch, default settings
* using a contrasty luminance as mask, curves stretch
*** Stretched color mods
* with binary_star_mask protecting stars, ACDNR on chrominance, lightness mask, stdev 4 iterations 6
* CC background ref upper limit 0.125
* invert, SNCR green 1, invert again (to fix magenta hues in whites)
* SNCR green 0.8
*** Star mods
* extract star mask with starnet, blur 3 layers of a trous, curve boost
* with it on, curve saturation upwards. Clone stamp out big stars - small_star_mask
* using that as a start, EZStarReduce using morphological transformation
* with small_star_mask on, unsharp mask 0.9, w/ deringing
***MLT stretch
www.stelleelettroniche.it/en/2014/09/astrophoto/m42-ngc19...
**Initial (fine details)
* created a new multiscale linear transform, kept 5 layers
* diffed from original image to create a "blurred" version of original image
* extracted luminance from original, s-shaped RGB curve used as mask on blurred version
* used curves to create s shape in RGB (asymmetrical, like a camera curve) and pump up saturation a lot
* pixelmath sum the 3, rescaled, back to original image
**Second (nebula)
* created a new multiscale linear transform, kept 7 layers, and diff from original
* extract luminance from diff, s-shaped RGB curve. Use as mask on blurred version
* slight boosts in sat and RGB
* pixelmath sum the 3, rescaled, back to original image
*** Finishers
* EzDenoise, TGV 1500 edge 8e-3, default MMT
* LHE kernel 512 contrast 1.5,slight boost in sat, 50-50 mix with original
* LHE kernel 256 contrast 1.5, 20-80 mix with original
* dark structure enhance
* MMT sharpen, 6 layers biases 0.05 0.05 0.025, 0.025, 0.012, 0.005 with luminosity mask s-curved for more contrast
A complete rework and framing from my previous version of the Pleaides.
This version was to show more of the dust clouds surrounding the reflection nebula which is just as interesting as the star cluster and it's nebula itself.
Captured from my home in Gérgal, Almería, Spain in two nights on the 28 and 29th of November 2021
Subframes:
Red: 168 x 120s = 5.6h
Green 172 x 120s = 5.7h
Blue 172 x 120s = 5.7h
Calibration
20 x Darks and Flat Darks
20 x Flats per filter for each night
This is part of my ongoing experiment to adapt one of my mono lunar/planetary cameras, a cooled ZWO ASI174MM, for deep sky work through my 300mm f/10 SCT. This is only a slightly trimmed LRGB image so M27 only just fits vertically in this close-up view. All luminance subframes were just 20 seconds each.
Practice experiments on two previous nights in the last week were ruined by a combination of poor skies with high cloud and some technical issues working out the right settings. I'm sure I can later improve on this image once I work out the optimum camera settings for the scope and add more data. The most important aspect was to gather appropriate dark and flat frames to ensure amp noise was removed.
The other parallel experiment was to abandon autoguiding and rely on the accuracy of my EQ8 mount.
Peter
L = 97x20 seconds
R = 13x30 seconds
G = 14 x30 seconds
B = 15x30 seconds
Peter
Manufacturer: Pontiac Motors Division, Kansas City, Kansas - USA / General Motors Company, Detroit, Michigan - U.S.A.
Type: Firebird Trans Am Turbo 4.9
Engine: 4940cc V-8 302 Turbo 90°
Power: 203 bhp / 4.000 rpm
Speed: 190 km/h
Production time: 1980 - 1981
Production outlet: 178,229 (all Firebirds 1980-1981)
Curb weight: 1706 kg
Special:
- This car of the second generation (1970-1981) has a three-speed Turbo-Hydramatic automatic gearbox, a Rochester M4MC 4-barrel carburettor, a Garrett TB305 turbocharger, a 12-Volts electric system, a 79 liter fuel tank and rear wheel drive.
- The separate partial F-body frame chassis with self-supporting body with front subframe has a 108.2 inch wheelbase, a bulge in the hood (to create more space for the turbo), recirculating ball VPAS steering, a special bird decal on the hood, turbo graphics on the hood and deck lid spoiler, front trapezoidal wishbones, independent coil spring front suspension with sway bar, longitudinal semi-elliptic rear suspension with anti roll bar, telescopic shock absorbers all round, special disc wheels, tire size P225/70 R 15, ventilated hydraulic servo disc brakes at the front and powered hydraulic drum brakes at the rear.
- A “Yellow Bird” package, an electronic-tuned stereo radio with a four-speaker system, a new dark blue interior color, and new seating which came in five colors were optional.
- The second generation Firebirds were assembled at plants in Van Nuys (California) and Norwood (Ohio). Norwood used lacquer based paint while Van Nuys used water based paint , due to California's tightening pollution regulations. The water based paint often failed and delaminated during the warranty period and subsequently, cars had to be repainted.
M42 The Orion Nebula imaged in HaOiiiOiii. The Ha image is mapped to red and consists of 6 hours of 60 second subframes. The Oii image is mapped to green and blue and consists of 4 hours worth of 60 second subframes.
Ha data was captured during December 2019 and January 2020.
Ts65 Quad Astrograph & ASI1600MM Pro camera
Manufacturer: Wilhelm Karmann GmbH, Osnabrück - Germany / Volkswagen AG (VAG), Wolfsburg - Germany
Type: Typ 34 1500S Karmann Ghia Coupé
Production time: 1962 - 1965
Production outlet: 29,502
Production outlet: 42,505 (September 1961 - July 1969: 1500, 1500S and 1600 models)
Engine: 1493cc (HO4 OHV) four-cylinder boxer forced air-cooled
Power: 54 bhp / 4.200 rpm
Torque: 106 Nm / 2.400 rpm
Drivetrain: rear wheels
Speed: 145 km/h
Curb weight: 866 kg
Wheelbase: 94.5 inch
Chassis: central tubular frame with continuous deck, rear forked subframe and monocoque all-steel body
Steering: worm & roller with hydraulic damper
Gearbox: four-speed manual / all synchronized / floor shifter
Clutch: single dry plate disc
Carburettor: twin Solex 32 PDSIT downdraft
Fuel tank: 40 liter
Electric system: Bosch 6 Volts 77 Ah
Ignition system: distributor and coil
Brakes front: ATE hydraulic Duplex drums
Brakes rear: ATE hydraulic drums
Suspension front: independent lengthwise crank trailing arms, anti-roll bar connected to upper trailing links, crossed transverse round torsion spring rods, progressively acting rubber springs + hydraulic telescopic shock absorbers
Suspension rear: pendulum axle, double jointed CV joint trailing arms, transversely rotating torsion bars, progressively acting rubber springs + hydraulic telescopic shock absorbers
Rear axle: live swing type
Differential: spiral bevel 4.125:1
Wheels: 4½J x 15 safety rim wheels
Tires: 6.00S x 15L Bias 6-Ply tubeless
Options: Fichtel & Sachs Saxomat semi-automatic four speed transmission (an electromagnetic clutch with a centrifugal clutch used for idle), three-speed automatic transmission, Air Conditioning (USA), radio, electrically operated sliding steel sunroof
Special:
- The body, based on Typ 3 platform (VW 1500/1600) and for that called „große Karmann-Ghia“ / „big Karmann-Ghia“ in Germany, was restyled by Sergio Sartorelli from Carrozzeria Ghia SpA, Turin - Italy, but built by Karmann in Osnabrück - Germany.
- The Typ 34 was the flagship model of the entire Volkswagen line. It was the most expensive Volkswagen available (handcrafted body), the fastest, and the most luxurious (built-in fog lights, cigar lighter, electric clock, locking steering column, front & rear vent windows, variable wiper controls and luxurious interior).
- Initially, this would replace the original Type 14 Karmann Ghia, but later it was decided to assemble both types at the same time.
- Sales went bad because Type 34, nicknamed “Razor-Edge Ghia” in the UK, was almost as expensive as a Porsche 356 and it was not offered officially in the USA. But nowadays the USA has the largest number of known Typ 34’s Karmann Ghia’s left in the world (400 of the total 1,500 (officially registered) to 2,000 or so remaining.
- Currently, less than 1500 are worldwide registered at the “VW Type 34 Karmann Ghia Registry”, San Diego, California - USA.
- Production figures from Convertibles differences, but it is very likely that 12 vehicles (prototypes and zero-series) were built at Karmann in Osnabrück. Some sources mention 17 prototype units.
- Lorenz Karosserie GmbH, Wetter an der Ruhr, Northrhein Westfalen - Germany converted Coupé’s into Convertibles on customer request. There should have been about 20 Lorenz Convertibles.