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This is another image I completed on my recent trip to Kartchner Caverns. I had been collecting data with three different combinations of camera and telescope, but just could not get the signal to noise ratio I wanted. After this last run, I had a ton of data, over 100 subframes in each channel of LRGB. With so many subs, I skipped the calibration frames and just stacked them all. Pretty much all the flaws were rejected by the algorithm, and it came out pretty clean. A little cleanup with GraExpert, plus normal processing in PI. Description below is stolen from APOD.
In this celestial abstract art composed with a cosmic brush, dusty nebula NGC 2170, also known as the Angel Nebula, shines just above the image center. Reflecting the light of nearby hot stars, NGC 2170 is joined by other bluish reflection nebulae, a red emission region, many dark absorption nebulae, and a backdrop of colorful stars. Like the common household items that abstract painters often choose for their subjects, the clouds of gas, dust, and hot stars featured here are also commonly found in a setting like this one -- a massive, star-forming molecular cloud in the constellation of the Unicorn (Monoceros). The giant molecular cloud, Mon R2, is impressively close, estimated to be only 2,400 light-years or so away. At that distance, this canvas would be over 60 light-years across.
Cameras: QSI 683, ASI 2600mm
Telescopes TEC 140, Vixen VC200L
Taken from multiple locations in multiple years, finished in Southern Arizona, October 2024.
Reprocessed Aug 2025 with GraXpert
The nebula off center left is SH2-102. There are a number of dark nebulae placed around the image.
Dwarf 3
530x45sec subframes, which is bit more than 6 and a half hours of exposure time.
Brenda has a brand new MOT. A certain amount of surgery was needed, both on Brenda’s subframe and my wallet, but we’re good to go for another year of adventures. When we first took possession of her two and a half years ago, I was frightened to drive her out of the lane at the end of our garden and onto the main road, but nowadays it’s a joy to trundle along at a modest pace along the A30 on the inside lane, towards the blissfully peaceful and charge free car park on the Towans in winter. Even though we’ve stripped out all the soft furnishings and brought them into the house until springtime to keep them from getting damp, she’s comfortable enough to sit in with a cup of tea after a stumble over the dunes, gazing out over the black water towards the darkening hulk of the headland around the bright lights of St Ives. Not that I’m planning to drive Brenda around St Ives any time soon. Anything that might involve reversing in tight spaces is still a bit of a nerve jangler, even with the aid of the onboard reversing camera. Still, I’ve been brave enough to stop in the M&S car park just off Loggans roundabout in the rush hour twice in the last week. Creeping around a car park in over six metres of steel without bashing pedestrians can be a challenge in the dark.
We ended up going to the big free car park on consecutive afternoons. As you’ve no doubt remembered, neither of us have ever been keen on the business of mornings, and at this time of year the sun sets before half past four in the afternoon. So despite a firm intention to head slightly further afield, more often than not we come here. Sometimes we bring lunch with us. On this occasion we picked up a couple of pasties and a salivating spaniel called Rosie. Ali’s sister’s dog. Much as I was delighted to learn that Prima does a flaky steak pasty, having an excitable hound within three inches of my face while I was trying to eat it was rather less enjoyable. And because Rosie didn’t really get the idea that I was hoping to wash it down afterwards, the post lunch coffee was abandoned in favour of letting her loose across the dunes before she exploded with excitement - and other things best not mentioned here. But Ali likes to take the dog for a stomp while I take pictures, so we stomped together for some distance along the dunes before descending onto the beach, where we split up. That dog must cover at least twenty miles in comparison to the two or three we usually manage.
I spent some time on the beach with the long lens, picking out lone figures bathed in light against the backdrop of the bluff and the warmly lit seaspray. Everyone except me seemed to be walking their dogs on this bright winter afternoon that was full of atmosphere. Sunbeams moved continually in and out of the clouds, suddenly illuminating the landscape before everything disappeared into shadows once more. It was an afternoon for catching moments. The lady in the distance really needed to be walking towards me or away from me, but instead she stood in the shallows, throwing a ball for one of her expectant companions, while the other sniffed about in the sand behind her. Actually, I just looked at the picture I worked on from this earlier part of the session and I like it more than I did at first. It might yet make it into these pages - you never know.
After I was happy enough with the shots I’d grabbed down on the beach, I moved up to the dunes, hoping to catch some light on them, much as I’d done the day before, as well as on the last outing of the three happy snappers with Dave and Lee a month earlier. By now we were getting close to sunset, and after trying a wider shot, I returned to the brilliant telephoto lens. Each time the sun peaked out from the dark clouds, the scene before me became a mixture of fire and shadow, parts of the beach lighting up in a golden blaze. I just needed someone to walk across that patch of golden blaze. It seemed unlikely, because who’d be daft enough to walk across the wettest part of the sand and risk a wave breaking over their walking boots? But happily, one barefooted soul obliged. There’s always somebody who wants a paddle, whatever the season.
Shoots at this time of year are often brief, but at the same time I’m always home for tea, and even today I managed the mile across the undulating landscape to the van, arriving just as Ali was unlocking. With a damp snoozing dog sprawled out on an equally sodden blanket across the passenger seat in the cab, we sat in the back and watched the sea through the open side door nursing the steaming mugs we’d been denied earlier in the day. Coffee at last on a perfect winter afternoon.
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NOTE: This photo is mislabelled as having been made on Dec. 16. It was made on Dec. 21!
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Photographed from mid-town Toronto, Canada, at 04.55 EST (Moon altitude: 41° | Sun 30° below the horizon)
* Temperature -6° C. ~ warmer than last week!
The Sun reached the December solstice - marking the start of winter in the northern hemisphere and of summer in the southern hemisphere - at 05.44 EST today. The subframes for this image of the Moon were obtained just 49 minutes earlier.
At the time of this photo the Moon had passed its last quarter phase exactly 8 hours earlier, so the Moon was in its waning crescent phase, with the terminator (the dividing line between day and night) already appearing slightly curved. Slightly less than half (actually, 46.7%) of the Moon is illuminated by the Sun in this photo.
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Nikon D810 camera body on Explore Scientific 152 mm (6") apochromatic refracting telescope, mounted on Sky-Watcher AZ-EQ6 SynScan mount.
1200 mm focal length, f/8
Best twelve of fourteen identical stacked frames; each frame:
* ISO 200, 1/200 sec. exposure
Stacked in Registax
Processed in Photoshop CS6
(image rotation, brightness, contrast, 35% colour desaturation, sharpening on left side of Moon)
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1995 Chrysler Atlantic Concept
The Chrysler Atlantic was a retro concept car created by Chrysler and fabricated by Gaffoglio Family Metalcrafters in California. It was first shown in 1995. The Atlantic was designed by Bob Hubbach and inspired by the Bugatti Atlantique. The idea for this car began out as a sketch on a napkin by Chrysler's president Bob Lutz in early 1993 and also involved the automaker's chief designer, Tom Gale.
The Atlantic has several similarities to the opulent vehicles of the 1930s such as the aforementioned Bugatti Type 57S Atlantique (or Atlantic). Its styling is also more than a little inspired by the Talbot-Lago T150 SS Coupe that was constructed in 1938, such as the shape of the side windows and the curved boot. Some of the retro details include a straight-8-engine that was actually constructed from two 4-cylinder Dodge Neon engines with an S configuration 4.0 L., which is rarely used in modern cars. Other retro touches to the car's look include the interior that is replete with Art Deco-style gauges. The Atlantic Concept has around 360 horsepower (268.5 kW) and uses Chrysler's 42LE transaxle transmission lifted from the Chrysler LHS mounted to the rear subframe. Power is sent from the engine to the transaxle through a long torque tube hidden under a large tunnel in the interior. Riding on a 128-inch (3,251 mm) wheelbase, its front wheels measure 21 inches and 22 inches in the rear — large at that time.
It was one of Chrysler's most popular concept vehicles and has proven popular enough to still make the occasional public appearance.
The Atlantic's popularity has also allowed its overall design and image to be associated as part of both advertising and labeling of packages associated with a variety of automotive car care products, accessories, and electronics.
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 02.29 and 02.50 EDT
(285 km by road north of Toronto)
* Temperature 12° C.
* Total exposure time: 10 minutes
* 540 mm focal length telescope
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Description:
One of the most famous and best known objects in the sky is this large spiral galaxy, which can be seen with the unaided eye in a dark-sky location late in the northern hemisphere summer and in the autumn.
M31 is about 50% larger than our own Milky Way galaxy, and lies at a distance of about 2.5 million light years. For more information about M31, click here:
en.wikipedia.org/wiki/Andromeda_Galaxy
For a version of this photo WITH LABELS, click on your screen to the RIGHT of the photo, or click here:
www.flickr.com/photos/97587627@N06/29251167742
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Technical information:
Nikon D810a camera body on Tele Vue 101is apochromatic refracting telescope, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Ten stacked frames; each frame:
540 mm focal length
ISO 4000; 1 minute exposure at f/5.4; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (levels, brightness, contrast, colour balance, sharpening)
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M51, also known as the Whirlpool Galaxy, is a spiral galaxy located in the constellation Canes Venatici. It is approximately 23 million light-years away from Earth and has a diameter of about 100,000 light-years. The galaxy is named after its distinctive spiral arms that resemble a whirlpool.
M51 is a popular target for astronomers and amateur stargazers due to its brightness and proximity to Earth. It is also a prime example of a grand design spiral galaxy, with well-defined spiral arms that are thought to be caused by density waves in the galaxy's disk.
The Whirlpool Galaxy is also notable for its interaction with a smaller companion galaxy, NGC 5195. The two galaxies are connected by a bridge of gas and dust, and their gravitational interaction has caused a burst of star formation in the Whirlpool Galaxy's outer regions.
AQUISITION:
Telescope: SkyWatcher Esprit 120
Camera: QHY268MM
Filters: Astronomik Deep Sky LRGB-Ha
SUBFRAMES:
Lum: 236 x 120"
Red: 74 x 300"
Green: 60 x 300"
Blue: 60 x 300"
Hydrogen Alpha: 60 x 300"
Total exposure time: 39 hrs
Taken between March & May 2023
M51 in Ursa Major is the first galaxy for which a spiral structure was detected. William Parsons, the 3rd Earl of Rosse, observed and sketched M51's spiral arms using his 72" telescope in Ireland. M51 tidally interacts with an adjacent smaller companion galaxy, NGC 5194, creating the extended area of brightness you can see below and to the right of the galaxy pair.
Telescope: Celestron EdgeHD 8"
Reducer: 0.7x (1440mm Focal Length)
Camera: QSI 683wsg
Filters: Baader RGB-CCD + UV/IR Cut
Mount: Astro-Physics Mach1 GTO
Integration: 40-50 mins each LRGB (5 min subframes)
Processing Software: PixInsight v1.8
NGC 6995 also know as the Eastern Veil is a part of the Cygnus Loop, a large supernova remnant in the constellation Cygnus.
She is located around 2500 light-years.
Personally i see the face of the Joker 😄
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -5°C gain 101 offset 49
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher AZ-EQ6
Filter: Optolong L-eXtreme
-Acquisition-
Light : 128x300s
Total integration time 10,6h
Dark: 100x300s Flat-50 Bias-100
Date : 20,21,23,24,25 August 2022
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
Ez Processing Suite from darkarcon
darkarcon website : darkarchon.internet-box.ch:8443/
-Pre Processing in PixInsight-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Image Integration
Drizzle x2
Dynamic crop
-Processing
DBE MasterLRGB
___RGB layer___HOO
Split RGB channels to build Ha and Oiii
Ha=R Oiii= B*0.3+G*0.7
EZ_Soft Stretch
HOO combination with Foraxx formula
R=Ha
G=((Oiii*Ha)^~(Oiii*Ha))*Ha + ~((Oiii*Ha)^~(Oiii*Ha))*Oiii
B=Oiii
___L layer___
Ez_Deconvolution
Ez_Soft Stretch
Local Histogram Equalization with nebula mask
UnsharpedMask with nebula mask
___LRGB___
Ez_Denoise
Curve Transformation
Annotation
Save as PNG
Clear skies !
The photo is of the visitors at the Frido Kahlo exibition, as the title says, the slow shutter speed rendering the "abstraction"; the projected form on the wall, the red (pink) band and the moving darker forms of the visitors around the yellow form serving as frame in frame, or #subframing; with the projected colors amphasizing the red and the yellow, caught during exposure, among the many colors she used so skillfully.
The nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt, in the Orion constellation.
The Horsehead Nebula is approximately at 1400 light-years from Earth.
This is a two panel mozaic
Pre process : flic.kr/p/2mZk6WG
-Equipment-
Scope: TS-Optics 94/414 EPDH (414mm focal)
Camera: ZWO ASI533MC Pro at -25°C gain 101 offset 49
Guiding: ZWO OAG
Guiding camera: ZWO ASI 120MM
Mount: Skywatcher AZ-EQ6
Filter: Optrolong L-eXtreme
-Acquisition-
Light : Panel 1-41x300s / Panel 2-36x300s
Total integration time 6,5h
Dark-100x300s Flat-50 Bias-100
Date : 25,24 January 2022
Location : France-Alsace Bortle 4/5
-Software-
Carte du Ciel, N.I.N.A, Phd2 , PoleMaster and PixInsight
Ez Processing Suite from darkarcon
darkarcon website : darkarchon.internet-box.ch:8443/
-Pre Processing each panels in PixInsight-
Image Calibration
Cosmetic Correction
Debayer
Subframe Selector
Star Alignement
Local Normalization
Drizzle x2
Dynamic crop
-Processing
DBE master Light
Split L,R,G,B layer from Master light
__L__
Ez_Deconvolution
Ez_Denoise
Ez_Soft Streatch
UnsharpedMask
LocalHistogramEqualization
__RGB__
Linear Fit
BackgroundNeutralization
PhotometricColorCalibration
Ez_Soft Streatch
Starnet++
CuvesTransformation with mask
SCNR star mask
Bring back stars with PixelMath
__LRGB__
LRGBCombination
Final CurvesTransformation
DarkStructureEnhance Script
Save as jpg
Clear Skies !
Andromeda Galaxy is an island universe that lies some two million light years from our own Milky Way Galaxy. I think of my imaging system as a time machine that captured this object as it appeared two million years ago. If it is still there, I wonder what it looks like now.
This is a preliminary LRGB image to which I willl add Hydrogen alpha data (Ha). The Ha data will highlight the star-forming regions in the spiral arms of the galaxy. My objective in this rendering was to explore the full LRGB possibilities before adding the Ha data.
60-second subframe exposures were taken to minimize saturation in the bright galactic center.
ZWO ASI6200MM-P/EFW 2" x 7 (LRGB)
Tele Vue NP101is (4" f/4.3)
Losmandy G11
Integration time:
L: 60s x 233 = 3:53
R: 60s x 74 = 1:14
G: 60s x 80 = 1:20
B: 60s x 71 = 1:11
Total integration time: 7:31
Captured with NINA, processed with PixInsight, and finished with Affinity Photo.
Andromeda Galaxy is an island universe that lies some two million light years from our own Milky Way Galaxy. I think of my imaging system as a time machine that captured this object as it appeared two million years ago. If it is still there, I wonder what it looks like now.
This is an LRGB image that is augmented with Ha data to highight the star forming regions, which appear as reddish blotches in the spiral arms of the galaxy. The preliminary LRGB and Ha data that comprise this image were uploaded on November 1st and 12th, respectively.
60-second subframe exposures were taken in LRGB and HDRMT was used in PixInsight processing to minimize saturation in the bright galactic center.
ZWO ASI6200MM-P/EFW 2" x 7 (Chroma 3nm Ha, ZWO LRGB)
Tele Vue NP101is (4" f/4.3)
Losmandy G11
Integration time:
Ha: 600s x 16 = 2:40
L: 60s x 233 = 3:53
R: 60s x 74 = 1:14
G: 60s x 80 = 1:20
B: 60s x 71 = 1:11
Total integration time: 10:11
Captured with NINA, processed with PixInsight, and finished with Affinity Photo.
Located close to the Orion Nebula and usually included in the same frame but not very often given the main stage.
Imaged 17 Dec 2022 on a single night test imaging session after a complete rebuild of the Celestron C11 Edge HD imaging setup.
This is 362 x 60 second subframes totaling 6 hours of integration.
The full details are available on my Astrobin page astrob.in/w1lbb3/0/
Technical summary:
Celestron C11 Edge HD with 0.7 focal reducer.
ZWO ASI2600 MC Pro camera.
Baader Moon and Sky Glow filter.
EQ6 R Pro mount.
200mm guide scope.
No flats, no darks only 50 bias frames for calibration.
Edited with PixInsight and Adobe Lightroom Classic.
Andromeda at this time of year doesn't get high enough above the horizon to photograph until about 2am or so. It starts getting too light to photograph at around 4am. Which gives only about 2 hours during one night to capture the image. I'm not usually up at 2am, but Seestar can be set to autopilot and do the late night/early morning work while you sleep.
782 ten-second subframes taken over two nights.
Seestar S50 mosaic mode | Polar Alignment
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Photographed at Algonquin Provincial Park, Ontario, Canada
(285 km by road north of Toronto)
* Temperature 17° C.
* Total exposure time: 6 minutes.
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Description:
High in the northern hemisphere summer sky our home galaxy, the Milky Way, runs through the constellations Cassiopeia (left side), Cepheus (centre) and Cygnus (right side).
This area of the sky is riddled with glowing red clouds of hydrogen gas, numerous star clusters, and areas of dark foreground gas that obscures the light of millions of stars beyond.
Just a little above and to the right of centre is the bright circular red gas cloud IC 1396. For a close-up view of this nebula made with a 400 mm lens in August 2015, click here:
www.flickr.com/photos/97587627@N06/19929294304
One of the most distinctive gas clouds is the aptly named "North America Nebula", at bottom right. For a close-up view of this nebula made with a 400 mm lens, click here:
www.flickr.com/photos/97587627@N06/19933485213
For a version of this photo WITHOUT labels, click on the LEFT side of your screen, or click here:
www.flickr.com/photos/97587627@N06/28165947613
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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 3200; 1 minute exposure at f/4; unguided
(with LENR - long exposure noise reduction)
Subframes registered in RegiStar;
Stacked and processed in Photoshop CS6 (brightness, contrast, levels, colour balance, colour desaturation)
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M17 to M16 The Swan and Eagle Nebulas
Taken on 9/5/16, I was going to add more subframes but I decided move on to other targets. Only 4 exposures, 20 minutes long.
No flats or bias and only 6 dark frames used
QHY10 One-Shot color
AstroTech AT65EDQ
Orion Sirius Mount(on pier)
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Photographed at Algonquin Provincial Park, Ontario, Canada, between 21.46 and 22.03 EDT
(285 km by road north of Toronto)
* Temperature 15° C.
* Total exposure time: 6 minutes
* 20 mm lens
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130 degrees of the northern portion of our home galaxy, the Milky Way, and some 80,000 stars, are seen in this wide angle image, running from the constellation Cepheus at left, through Cygnus and Aquila, to Scutum at right. The Milky Way bulges noticeably at the right side, toward the centre of the galaxy in Sagittarius (out of view to the right).
A little left of and below centre is the shocking pink, distinctively-shaped North America Nebula in the constellation Cygnus. For a telephoto view of this nebula made with a 300 mm lens on the same night, click here:
www.flickr.com/photos/97587627@N06/29220929561
Just to the right of the North America Nebula lies a region of glowing red hydrogen gas surrounding the star Gamma Cygni. For a telephoto view of this region, click here:
www.flickr.com/photos/97587627@N06/27845511250
And near the left edge, just below centre, is a fainter circular area of glowing red hydrogen gas, called IC 1396. For a close-in view of this gas cloud, click here:
www.flickr.com/photos/97587627@N06/19929294304
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Sigma 20 mm f/1.4 ART lens on Nikon D810a camera body, mounted on Astrophysics 1100GTO equatorial mount with a Kirk Enterprises ball head
Six stacked frames; each frame:
20 mm focal length; ISO 2500; 60 seconds exposure at f/4
(with LENR - long exposure noise reduction)
Subframes stacked in RegiStar;
Processed in Photoshop CS6 (brightness, contrast, levels, colour balance)
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Adam, a sculpture on the left side of the entryway to the Rodin Museum, Benjamin Franklin Parkway, Philadelphia, Pennsylvania
Some of the middle-sized bells in Loughborough's Carillon. It was built after the first world war as a war memorial. The bells were cast in Loughborough's John Taylor bell foundry and funded by individuals and local businesses. The 46 metre high carillon tower was officially opened on 22 July 1923; this photograph was taken 100 years and a day after that! There is a total of 47 bells sounded by mechanical links to an organ-like keyboard whose keys need to be played by the carilloneur with fists and feet. It's wise to avoid ascending past the bass bells when the carillon is playing!
I love dark nebulas: dust lanes and molecular clouds which occlude starlight and create unique whispy and tendril-like shapes in the sky.
In the constellation Cepheus there's a large emission nebula (IC 1396) which includes the famous Elephant Trunk nebula (IC 1396a), along with interesting dark nebulas (example: LDN 1104, 1111, 1121, 1130, etc). Some of these are included in the LDN and Barnard catalogues, however, after watching the latest Astro Imaging Channel episode, I'm not sure if they've been labelled correctly!
This image was taken with a Televue NP101is telescope mounted on a ZWO AM5 mount. Imaging camera was an ASI 2600MM Pro and Baader LRGB filters. Autoguiding was done using a SXpress Lodestar mounted on an off-axis guider. 2.5 hours of subframes were stacked
and processed in Pixinsight to obtain the final image.
Inside an old shelter
#FlckrFriday
#542
This week's FlickrFriday theme is: #Subframing
Le thème de ce FlickrFriday est: #Sous-ossature
O tema desta FlickrFriday é: #Sub-enquadramento
本次 FlickrFriday 主題: #子框架
FlickrFriday-Thema der Woche: #Unterrahmen
El tema de FlickrFriday es: #Sub-encuadre
I photographed this nebula not long ago, so why photograph it again? The answer is I used a different smart telescope: The Dwarf III. I still use the Seestar S50. I'll go into my reasons later. This is my very first Dwarf III image.
Dwarf III - Gain 60, 15 second exposures, (after culling) 720 subframes.
aka Cocoon Nebula
Dwarf 3
252 sixty second subframes for an approximate total of 4 hours and 12 minutes
Here's something to think about.
The Cocoon Nebula is about 7.5 light years in diameter, Using that as a measure the rectangle that delineates this image covers roughly 158 light years across (x axis) and 75 light years high (y axis), The depth (z axis) however is 2500 light years to the nebula. So we're viewing a great deal more space along the z axis than x or y, Also stars behind C19 will also be visible if they are bright enough. This means we are getting the illusion of more stars than the implied flat surface of the photo.
Put another way: if we took a slice of space encompassing the nebula 7.5 light years thick perpendicular to our line of sight of the nebula we would hardly see any stars at all.
Space is more empty than astro photos make them out to be.
At the center of this image is M 100, a face-on spiral that is part of the Virgo Cluster of galaxies. It is located in the constellation Coma Berenices. The distance to it is about 55 million light years -- the same as the rest of the Virgo Cluster. It is also known as NGC 4321.
To the right of it in this image (but south of it on the sky) is another spiral galaxy, NGC 4312. The Cosmicflows-2 catalog (Tully, et. al., 2013) puts the distance to this galaxy as 37.2 million light years -- significantly closer to us than M 100. It is also an edge-on galaxy, giving it a more flattened appearance.
This is a stack of 20 6 min exposures taken from my Bortle 8/9 backyard in Long Beach, CA. I used a Celestron Edge HD 925 at f/2.3 with Hyperstar lens and an Atik 314L+ color CCD camera with a Baader light pollution filter. Preprocessing of subframes in Nebulosity; registration, stacking, and processing in PixInsight; final touches in Photoshop.