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Messier 45, the closest of any of the 110 Messier objects. It is located in the constellation of Taurus, 444 light years away, visible with the naked eye.
I took this over 7 nights from Sept 15-Dec 12, 2023
Camera: QHY268M
Telescope: 11" Celestron Edge HD with Hyperstar V4.0
Optolong LUM-224x120sec
Camera: QHY128C
Telescope: Astrotech AT65EDQ
Optolong LUM-9x480sec
Optolong LUM-17x300sec
10h 5m
I have been trying longer subframes with the Hyperstar, outside of the 30sec I have been stuck on for years. Each panel has a minimum of 20 frames at 120 seconds through an Optolong LUM filter. I'm starting another round hoping to double them by the end of the season
Resolution ............... 1.432 arcsec/px
Rotation ................. -19.722 deg
Reference system ......... ICRS
Observation start time ... 2023-12-12 12:00:00 UTC
Focal distance ........... 540.27 mm
Pixel size ............... 3.75 um
Field of view ............ 5d 17' 16.9" x 3d 9' 0.2"
Image center ............. RA: 3 46 18.110 Dec: +24 10 51.43
Image bounds:
top-left .............. RA: 3 55 02.484 Dec: +26 32 11.56
top-right ............. RA: 3 33 00.671 Dec: +24 44 12.27
bottom-left ........... RA: 3 59 28.195 Dec: +23 33 13.77
bottom-right .......... RA: 3 37 52.872 Dec: +21 47 43.30
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 23.30 and 00.01 EDT
(285 km by road north of Toronto)
* Altitude of M51 at time of exposures: 41°, decreasing to 36°
* Temperature 16° C.
* Total exposure time: 15 minutes
* 2483 mm focal length telescope
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Located just south of the end star of the Big Dipper in the constellation Ursa Major (The Great Bear) (but actually across the border in the constellation Canes Venatici - The Hunting Dogs) the Whirlpool galaxy is a favourite target of amateur astronomers, especially in the northern hemisphere spring and early summer.
M51, which has a black hole at its core, is about 35% of the size and mass of our own Milky Way galaxy. It was the first galaxy to be identified as spiral in structure. The two portions of this galaxy interact with each other; the smaller satellite portion is named NGC 5195. The distance to this galaxy is still quite uncertain; estimates are between 15 and 35 million light years. By contrast, the great Andromeda Galaxy lies a mere 3 million light years from us.
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Click here to see the equipment used to photograph this galaxy:
www.flickr.com/photos/97587627@N06/49937525648
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Technical information:
Nikon D810a camera body at prime focus of Meade 30 cm (12") LX-850 Schmidt-Cassegrain telescope, mounted on Astrophysics 1100GTO equatorial mount
Fifteen stacked frames; each frame:
2483 mm focal length
ISO 5000; 60 seconds exposure at f/8, unguided
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance)
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The first clear nights after the rainy season and I needed to test some new gear and combos and that was my excuse for picking some easy targets. This was taken with a Canon 400mm f5.6L lens on a QHY183C colour camera connected via an Astromechanics EF focus adapter which enabled Sequence Generator Pro's autofocus routine to work with the lens. The image is an integration of nearly 10 hours total exposure (199 x 180 second subframes). The mount was a Skywatcher AZ-EQ5. Image capture was managed via SGP and PHD2 and all post-processing was carried out in PixInsight. As usual, I was defeated by Alnitak.
Observed from Prachinburi, Thailand.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 21.57 and 22.18 EDT
(285 km by road north of Toronto)
* Altitude of M17 at time of photo: 27°
* Temperature 14° C.
* Total exposure time: 10 minutes
* 540 mm focal length telescope
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Description:
One of the showpieces of the northern hemisphere summer sky is this diffuse nebula of hydrogen gas, which can be seen in amateur telescopes quite low in the southern sky, just outside the band of the Milky Way.
Known as the "Omega Nebula" because of the similarity of its shape to the last letter in the Greek alphabet, M17 is a hotbed of star formation.
From Wikipedia: "The Omega Nebula is between 5,000 and 6,000 light-years from Earth and it spans some 15 light-years in diameter. The cloud of interstellar matter of which this nebula is a part is roughly 40 light-years in diameter and has a mass of 30,000 solar masses. The total mass of the Omega Nebula is an estimated 800 solar masses.
It is considered one of the brightest and most massive star-forming regions of our galaxy. ...
The open cluster NGC 6618 lies embedded in the nebulosity and causes the gases of the nebula to shine due to radiation from these hot, young stars."
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@N06/29309651576
And for a wider angle view of this entire region, showing neighbouring nebulae and stars clusters, click here:
www.flickr.com/photos/97587627@N06/28874267555
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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
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 (brightness, contrast, unsharp mask, levels)
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Photographed from mid-town Toronto, Canada, at 18.43 EST (Moon altitude: 54° | Sun 7.6° below the horizon)
* Temperature 5° C.
Although this evening was very clear, there was a persistent gusty wind from the west, which made it difficult to keep the telescope steady during the ten subframes that make up this image.
Here the Moon, gliding through the constellation Gemini (The Twins) was 78.7% sunlit, on its way to its full phase in the early evening of March 1 (four days from now).
Although it is subtle, some colour can be seen on the lunar disk, particularly in the Moon's so-called maria ("seas"), which of course are lava plains and not water.
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Nikon D850 camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Sky-Watcher AZ-EQ6 SynScan mount.
Best eight of ten identical stacked frames; each frame:
* ISO 100, 1/100 sec. exposure, f/8
Stacked in Registax
Processed in Photoshop CS6
(brightness, contrast, colour saturation)
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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.
Captured from my backyard in Gérgal, Almeria Spain over 3 nights.
This project was to be paired with RGB stars from the RGB image also posted here. Unfortunately the stars were not good enough due to a rotator tilt problem I had during some of the imaging sessions. Instead, this the whole image with Ha, Sii and Oiii data.
Captured on 21, 22, 23rd of February 2022.
Subframes
59 x Ha 300s : 4h 55min
42 x Sii 300s : 3h 30min
51 x Oiii 300s : 4h 15min
Calibration:
20 Bias and Darks
20 Flats for each filter per night.
Manufacturer: Volkswagen AG (VAG), Wolfsburg - Germany
Type: Typ 3 Variant 1600 Luxus (L)
Production time: 1965 - 1973
Production time: 1961 - 1973 (all Typ 3's)
Production outlet: 1,202,483 (all 1500/1600 Variant models)
Production outlet: 2,583,015 (all Typ 3's / all models)
Engine: 1584cc four-cylinder boxer forced air-cooled
Power: 54 bhp / 4.000 rpm
Torque: 110 Nm / 2.200 rpm
Drivetrain: rear wheels
Speed: 135 km/h
Curb weight: 1000 kg
Wheelbase: 94.5 inch
Chassis: central tubular frame with continuous deck, rear forked subframe and monocoque body
Steering: worm & roller with hydraulic damper
Gearbox: four-speed manual / all synchronized / floor shifter
Clutch: dry plate disc
Carburettor: twin Solex PDSIT downdraft
Fuel tank: 40 liter
Electric system: 12 Volts
Ignition system: distributor and coil
Brakes front: hydraulic ATE discs
Brakes rear: hydraulic drums
Suspension front: independent lengthwise crank trailing arms, anti-roll bar connected to upper trailing links, crossed transverse round torsion spring rods + hydraulic telescopic shock absorbers
Suspension rear: double jointed CV joint trailing arms, transverse torsion bars (Variant model with additional compensating springs) + hydraulic telescopic shock absorbers
Rear axle: live swing type
Differential: spiral bevel
Wheels: 4½J x 15 safety rim wheels
Tires: 6.00 x 15 Bias 6 Ply
Options: Fichtel & Sachs Saxomat semi-automatic four speed transmission (an electromagnetic clutch with a centrifugal clutch used for idle), Bosch D-Jetronic electronic fuel injection (from 1967 ”E” models), Air Conditioning (USA)
Special:
- Typ 3 (Projekt EA 142: 1961 – 1973, introduced at the 1961 Frankfurt Motor Show) was the first "big Volkswagen" and the last series with the air-cooled boxer engines.
- It shared the Beetles gearbox, rear axle and the engine mounted in the back (into a subframe which contained the complete rear suspension) and almost half of the total production were Variants (43 %).
- Since 1966 all models became a 12 Volts electric system and were called "VW 1600", but the "1600 A" still had the old 1493cc engine with only 45 bhp/4.000 rpm.
- Typ 3 Series was available as this 3-door “Squareback”, as 2-door Notchback Sedan, as 2-door Fastback Coupé, as 3-door Delivery Sedan and as 2-door Convertible (only 12 built) in Europe. Cars built in Brasil (nicknamed “Zé do Caixão” (meaning "Coffin Joe") and Argentina could be delivered with 4 doors.
- Type 3 output continued in Clayton (Australia) until 1974 and in São Bernardo do Campo (Brazil) until 1982.
This is my project for October 2017: Helix Nebula (NGC 7293) or: "The Eye of God". This is a preliminary version of this ongoing project, this one only without narrow band filters. 24 h total exposure time (180 sec for each subframe). Only data of the RGB camera with a L-pro filter.
ATIK 490 color on Hyperstar 14" /F1.9. ASA DDM85 mount with pointing file guiding. Six nights of capturing in October 2017. Later I will process the narrow band filter data (h-Alpha, OIII, SII and infrared) collected in parallel for another 24 hours. Tenerife 1180 meters above sea level.
IC 63 is an emission nebula in the constellation Cassiopeia. It is about 550 light-years from Earth. It is is being shaped by radiation from the nearby variable star, Gamma Cassiopeiae, which is slowly eroding away the surrounding clouds of dust and gas. The star is estimated to be 3-4 light-years from the nebula.
This image is a broadband image using an Antlia Triband RGB filter. I was pleasantly surprised by how pronounced the Ha is in this broadband image with just 45 minutes of integration time.
Date: October 29, 2025
Bortle Class 5 backyard, SF Bay Area (East Bay)
Capture: 30 x 90-sec subframes, OSC
Telescope: Celestron C9.25 SCT
Accessory: Starizona HyperStar C9.25-v4 lens
Imaging Camera: ZWO ASI 2600MC
Antlia Triband RGB Ultra, 2"
Mount: iOptron GEM45
ZWO ASIAIR Plus Control and Capture
Calibrated with Darks, Flats and Dark Flats
Processed with PixInsight, Photoshop
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
between 01.46 and 02.19 EDT
(285 km by road north of Toronto)
* Altitude of nebula at time of exposures: 53°
* Temperature 13° C.
* Total exposure time: 16 minutes
* 540 mm focal length telescope
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Description:
Visually with the unaided eye, or in binoculars or a telescope, the distinctively-shaped North America Nebula appears as a large but faint white cloud in the middle of our Milky Way galaxy. The digital camera sensor, however, reveals the red glow of ionized hydrogen gas.
This nebula is 1,600 light years distant from our solar system. Clouds of dark gas lie between us and the nebula, blocking the light behind and creating the apparent shape of the nebula.
For a wider angle view of this nebula - photographed with a telephoto lens at the end of July this year - that also shows the adjacent Pelican Nebula - click here:
www.flickr.com/photos/97587627@N06/35952320980
... and for an even wider angle view of the constellation Cygnus (The Swan), including the North America Nebula and other hydrogen gas clouds, also made in July, click here:
www.flickr.com/photos/97587627@N06/35914900410
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Technical information:
Nikon D810a camera body on Teleview 101is (4") apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount
Sixteen stacked subframes; each frame:
ISO 8000; 1 minute exposure at f/5.4, unguided
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness / contrast, only moderately competent star masking)
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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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Photographed at Algonquin Provincial Park, Ontario, Canada, between 23.29 and 23.51 EDT
(285 km by road north of Toronto)
* Temperature 17° C.
* Total exposure time: 6 minutes.
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Description:
One of the brightest sections in our home galaxy, the Milky Way, appears in the small constellation Scutum (the Shield), which appears in the southern sky half way from the horizon to the zenith as seen from southern Canada and the northern United States.
In this area appear many foreground cold, dark nebulae, which obscure the light of the stars beyond. These dark regions were photographed and catalogued by the great American astronomer E. E. Barnard (1857 - 1923) (en.wikipedia.org/wiki/Edward_Emerson_Barnard), and bear the designation "B", numbered from 1 to 370.
Near the centre of this view is a favourite target of amateur astronomers with modest telescopes: M11, the "Wild Duck Cluster". 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 version of this photo WITH labels, click on the RIGHT side of your screen, or click here:
www.flickr.com/photos/97587627@N06/28867652495
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Technical information:
Nikkor AF-S 70-200 mm f/2.8 G ED VRII lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Six stacked frames; each frame:
200 mm focal length
ISO 4000; 1 minute exposure at f/4.5; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (brightness, contrast, levels, colour balance, colour desaturation)
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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.
✨ Heart Nebula (IC 1805) Overview The Heart Nebula, officially designated IC 1805, is a vast emission nebula located about 7,500 light-years away in the constellation Cassiopeia. Named for its striking resemblance to a human heart, this celestial cloud glows intensely red due to ionized hydrogen gas energized by a cluster of young, massive stars at its core known as Melotte 152.
🌌 Key Features
Type: Emission nebula (H II region)
Distance: ~7,500 light-years
Size: Spans about 150 arcminutes—roughly four times the diameter of the full Moon
Core Cluster: Melotte 15, containing stars up to 50 times the mass of the Sun
Colouration: Rich reds from hydrogen, with blues and oranges from ionised oxygen and sulfur.
Center (RA, hms): 02h 33m 18.552s
Center (Dec, dms): +61d eg 22' 27.823"
Size: 47.1 x 46.9 arcmin
Radius: 0.554 deg
Pixel scale: 1.01 arcsec/pixel
### Session Log: January 9, 2024
- Target: Heart/Fish Head Nebula (NGC 896)
- Location: Havant, UK
- Telescope: Skywatcher Evostar 120mm, Skywatcher 0.85x reducer flattener, f6.375, 768mm
- Mount: iOptron CEM40g
- Imaging Camera: ZWO ASI533MM Pro
- Gain: 101, (Offset: 70 if one is used)
- Temp: -10°C (cooled)
- Subframes:
- Ha : 50 x 300s
- R: 66 x 90s
-G: 55 x 90s
- B: 50 x 90s
- Calibration frames:
- BIAS:
- Flats:
- Darks:
- Dark flats
- Filters: ZWO Ha, ZWO Red, ZWO Blue, ZWO Green
- Guiding: iOptron iGuider f4 integrated to the mount, dither every 5 frames
- Accessories: Primalucelab Eagle 5, Primalucelab ECCO, Primalucelab ESATTO, Primalucelab ARCO, Primaluce lab ALTO/GIOTTO
- Environmental: Bortle 5
- Software: Primalucelab Eagle Manager, N.I.N.A, PHD2
- Notes: No notes from the session, no calibration frames were taken on the night, the plan was to use the pre-done catalogue.
📚 Software & Processing Summary:
- Stacking: Starpx.com
- Processing: Starpx.com with the enhanced further processed in Pixinsight to bring out the nebulosity
- Final Editing: Photoshop with colour correction and crop
The Crab Nebula, also known as Messier 1 or NGC 1952, is a famous astronomical object located in the constellation of Taurus. It is a supernova remnant, resulting from a massive stellar explosion that was observed by Chinese astronomers in the year 1054. The nebula is approximately 6,500 light-years away from Earth and spans about 10 light-years in diameter.
At the heart of the Crab Nebula lies a pulsar, which is a rapidly rotating neutron star. This pulsar, also known as the Crab Pulsar, is only about 6 miles in diameter, has a mass greater than the Sun and spins 30 times per second. Observations indicate that the Crab Nebula is expanding at a rate of 1,500 km per second since its explosion over 900 years ago.
AQUISITION:
Telescope: SkyWatcher Esprit 150
Camera: QHY268MM
Filters: Astronomik Deep Sky Ha/OIII
SUBFRAMES:
Ha: 96 x 300"
OIII: 98 x 300"
Total exposure time: 16.2hrs
Taken Jan/Feb 2024 by Hector Jimenez
My new winter project. A 1979 Mini 850. Its had rebuilt subframes and a reconditioned engine so drives really nice. I'm intending on a full respray fairly soon but still deciding on a colour!
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
between 22.01 and 22.24 EDT
* Altitude of centre of frame at time of exposures: ~27°, declining to 24°
* Temperature 3° C.
* Total exposure time: 12 minutes
* 150 mm focal length lens
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Description:
Although Scutum is the fifth smallest constellation in the sky, it contains many open star clusters, a globular star cluster, and many dark foreground gas clouds. Located in the heart of northern hemisphere summer Milky Way, Scutum also features a bright starcloud that is easily visible to the unaided eye, and is magnificent to observe in binoculars - as long as you are in a dark sky location well away from the light pollution of our cities!
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@N06/52403087835
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Technical information:
Nikkor AF-S 70-200 mm f/2.8 G ED VRII lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with Kirk Enterprises ball head
Twelve stacked subframes; each frame:
ISO 4000; 1 minute exposure at f/4.5
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, colour balance)
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Photographed from mid-town Toronto, Canada, at 22.15 EST (Moon altitude: 53° | Sun 57° below the horizon)
* Temperature -10° C.
► I have redone this image by stacking multiple identical frames, and reprocessing with a different, more realistic colour balance. ◄
This was the first clear night in some weeks in Toronto. Yes it was very cold, but this was the day when I received my new Nikon Z7 mirrorless camera, and I just had to try it out on the Full Moon. Actually, the Moon was not yet quite full when I got the subframes from which this image was made; it would not reach its full phase for another 2 hours, 26 minutes. Also, the Moon was 5° south of the ecliptic, so we could look "over" the north limb (or edge) of the Moon's disk, and see some of the shadows inside the craters along the north (upper) limb that are apparent in this view.
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Nikon Z7 camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Sky-Watcher AZ-EQ6 SynScan mount.
Best nine of twelve identical stacked frames - each frame:
● 1253 mm focal length
● ISO 100, 1/400 sec. exposure, f/8
Subframes stacked in Registax
Processed in Photoshop CS6
(cropping, field rotation, brightness, contrast, colour saturation, colour balance, sharpening)
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 00.53 and 01.14 EDT
(285 km by road north of Toronto)
* Altitude of GALAXIES at time of exposures: 39°, declining to 35°
* Temperature 0° C.
* Total exposure time: 10 minutes
* 660 mm focal length telescope
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Description:
The constellations Leo, Ursa Major and Canes Venatici, which are well seen in the northern hemisphere spring, are populated with many galaxies that can be seen in amateur telescopes, as long as the observer gets out of the light-polluted city and finds a dark rural sky.
Near the familiar star pattern of Leo (the Lion) are three bright galaxies that are favourite targets of amateur stargazers. M66 (lower left) is a spiral galaxy located about 31 million km from our Milky Way galaxy. It has loosely wound arms and prominent dust lanes, and recedes from us at the rate of ~700 km per second.
The nearby M65 (lower right) is another spiral galaxy that is a little fainter and 4 million km further away than M66.
Both of these galaxies were discovered by famed French astronomer and comet hunter Charles Messier on 1780 March 1 at the Paris Observatory.
The larger but fainter galaxy NGC 3628 (top centre, also called the "Hamburger Galaxy) is a spiral galaxy at the same distance (35 million km) as M65. Discovered by English astronomer William Herschel in 1786, this galaxy appears almost edge-on as seen from Earth, and has a very prominent dark dust lane along its outer edge.
Foreground stars to about 16th magnitude can be seen in this image.
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@N06/40825176593
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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
Ten stacked subframes; each frame:
ISO 2500; 1 minute exposure at f/5.2, unguided
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (levels, brightness / contrast, colour balance)
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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!
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.
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Photographed from mid-town Toronto, Canada, at 18.43 EST (Moon altitude: 57° | Sun 14° below the horizon)
* Temperature 4° C.
The sky was reasonably clear, with some thin cirrus cloud, when I was able to get the ten base subframes that make up this view of the Moon high over Toronto early on this mild January evening before the heavier cloud moved in.
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Nikon D850 camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Sky-Watcher AZ-EQ6 SynScan mount.
Best ten of fourteen identical stacked frames; each frame:
* ISO 100, 1/120 sec. exposure
Stacked in Registax
Processed in Photoshop CS6
(brightness, contrast, sharpening on right side of Moon)
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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.
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...
I was struggling to somehow show the blue colored Squid nebula blanketed inside the red colored Flying Bat nebula
Celestron C8 with Starizona Hyperstar at F/1.9 using Optolong L-eXtreme F2 dual band filter, ZWO ASI294MC Pro camera
6 hours 24 minutes total integration time
192 x 2 minute subframes
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
Unfortunately this failed its last MOT in January 2024 and seems to have been sat here since, replaced as a daily driver by a FIAT 500. The MOT fail sheet is quite long, but the worst item is probably a corroded subframe mount, common on these I think. So definitely saveable. It's been in the same ownership here for a long time, so who knows - maybe it'll come back one day.
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.
Whilst Europe bakes in record breaking high temperatures, here in Wales we have another wet weekend.
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.
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.
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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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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