M51 The Whirlpool Galaxy – LRGBHa, “smooth” version

M51 The Whirlpool Galaxy - LRGBHa,

Variant 1 with Hydrogen Alpha data, not sharpened.

M51 The Whirlpool Galaxy through moonlight and Saharan dust – my first (semi)complete astrophotography project

This is my first astrophotography project. After months of preparation, I’ve finally managed to acquire my own, complete set of data and process it.

ACQUISITION

· Over 5 nights- 21-25 February 2021, with nearly full moon and a lot of dust from Sahara over the sky in Poland. Poor seeing conditions that impacted acquisition and guiding, with very few stars visible to the naked eye.

· Location: backyard.

· L: 72 x 300 s

· RGB and Ha: 20x 300s each.

· 30 dark frames

· 30 dark flats and 30 flats per filter.

GEAR

· Telescope: Skywatcher Maksutov-Newtonian 190mm/1000mm.

· Camera: ZWO ASI 1600MM-PRO (cooled to -20, gain 139)

· Filters: ZWO L, R, G, B, Baader Halfa 7nm- 36mm

· Guiding: ZWO ASI 120MM Mini.

· ZWO EAF.

· Mount: Skywatcher NEQ6 with Rowan belt mod.

· Computer: ASIAir V1.

PROCESSING (done entirely in Pixinsight):

· Blink to reject the worst subs (about 15%).

· WeightedBatchPreprocessing: calibration, registration, stacking (Hydrogen alpha not calibrated with flats due to significant overcorrection).

· MureDenoise on all stacks.

· DynamicCrop

· DynamicBackgroundExtraction with custom settings and lots of it- 4-6 iterations. There were horrible gradients due to moonlight and dust and flats didn’t necessarily make the stacks better…

· LinearFit on all the stacks.

— Luminance:

o Deconvolution with custom masks and settings with the EZ Decon script,

o Denoise with EZ Denoise script with custom settings,

o MaskedStrech to non-linear with custom settings,

o LocalHistogramEqualization with custom settings.

— RGB:

o ChannelCombination

o PhotometricColorCalibration with BackgroundNeutralization (that worked very well indeed!)

o Further nuked visible color cast in the background with custom mask (range_mask+star_mask) and SCNR.

o Denoise with EZ Denoise script with custom settings,

o MaskedStrech to non-linear with custom settings,

o Mild deconvolution with custom masks and settings with the EZ Decon script,

— Hydrogen Alpha

o HistogramTransformation to non-linear with custom settings,

o Starnet to remove the stars with range mask to leave grainy structures in the galaxy’s arms in the picture.

o Curves, HistogramTransformation and masks to clip the background entirely and most of the diffuse Ha glow.

— RGB + Hydrogen Alfa

o ChannelExtraction: R, G and B from RGB stack.

o Pixelmath to combine R with Ha

o ChannelCombination to reintegrate R(with Ha), G and B.

o Slight ACDNR

— RGBHa + Luminance

o LRGBCombination with custom settings,

o EZ HDR with custom settings,

o Contrast slightly enhanced with Curves,

o Mild saturation enhancement with ColorSaturation,

o EZ Star Reduction (stars were bloated due to poor seeing and questionable guiding; still not happy at all with how they turned out),

o PNG to publish and gloat.

o Sleep!

Posted by herbert307 on 2021-03-16 07:29:15

Tagged: , M51 , WHIRLPOOL , GALAXY , ASTROPHOTOGRAPHY , SPACE

Blue Galaxy

Blue Galaxy

Edited European Southern Observatory image of the galaxy M98.

Original caption: The colour blue has many associations â coldness, sadness, serenity. However, the colour holds a completely different meaning for astronomers, as demonstrated by the edge-on spiral galaxy Messier 98. Messier 98, also known as NGC 4192, is located approximately 50 million light-years away in the constellation of Coma Berenices (Berenice’s Hair). In this spectacular image from ESOâs New Technology Telescope (NTT), the galaxyâs perimeter, rippled with gas and dust, is dotted with pockets of blueish light. These are regions filled with very young stars, which are so hot that they glow with a bright blue hue. These young stars are burning at such high temperatures that they are emitting fierce radiation, burning away some of the dense material that surrounds them. In total, Messier 98 is thought to contain one trillion stars! The NTT is a 3.58-metre telescope at the La Silla Observatory, which pioneered the use of active optics and was the first in the world to have a computer-controlled main mirror.

Posted by sjrankin on 2016-10-29 05:04:49

Tagged: , Messier 98 , NGC 4192 , 29 October 2016 , Edited , ESO , European Southern Observatory , M98 , Galaxy

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

While the Mobile World Congress in full swing, it is impossible for us not to talk announcements from Samsung, Sony and Nokia.

But it is also connected accessories which will be discussed in today’s show.
As it is purely personal headband connected and anklet that I look most looking forward to have a truly complete range with my wrist that will tell me if I smell feet, my head, my measure heart and my ankle that will tell me how my head. Then and only then, I’ll swim in happiness connected in all its splendor with monitoring my health insured directly from a super computer in the basement of the White House. Anyway, here’s our recap of the first day of MWC in the # freshnews day.
Samsung introduces the New Galaxy S5 and Gear Fit phones coming out

And now it’s done, the new Galaxy S5 phones coming out has finally been officially presented. Fortunately for many of us no longer able to sleep as the suspense was unbearable. The facade of the S5 is almost identical to the S4 though it is slightly larger. Two touch buttons and a home button that also acts as a fingerprint reader, which is essential to the keke evening with the ability to make purchases or to switch to private mode found under the screen.

This is the back of the device that stands out the most because Samsung chose a material giving a faux leather stamped appearance which greatly improves the grip. Clement whispers in the atrium for the trolls, this is the special texture dressing. A heart rate sensor has been added under the photo sensor. Note also that the S5 waterproof and dustproof. Processor, camera and battery ahead of course very powerful, all technical details in our dedicated section. New S5 phones coming out should be available for sale from April 11 to an unknown price.
Side accessories wrist, you spoke yesterday Gear 2 and Gear 2 Neo, but Samsung returned to the charge, this time on the market bracelets connected. The Gear Fit runs Tizen and features a curved screen and 1.84 inch round. Besides the classical notifications bracelet reads your heart rate and will be equipped with an accelerometer as a gyroscope. It may therefore warn you if you ever walk upside down, for example, which can always be handy to not have the ankles swell. Note that the bracelet Gear Fit is both lightweight and hypoallergenic, what a shame for fans of mycoses.
Nokia goes Android

Nokia’s start with that, as rumor suggested, ended up spending Android. With models X, X Plus and XL, the Finnish manufacturer seeks to retain some specific Windows Phone as tiles or notifications fastlane center while enjoying the Android platform. However, Google has not certified the Nokia X, which will therefore don’t have a prior access to Google Play . However Nokia promises to provide the most popular applications, without more is known at this time. What is certain is that the phone will benefit from applications Microsoft Skype or as OneDrive Here Maps. Mails for Outlook and it will therefore not Gmail.

Six months after the beginnings of redemption by Microsoft and a few weeks before its realization brand therefore seeks to reconcile the two worlds to keep the best, all at entry level prices. In fact, the Nokia X will be available for sale at 119 euros and XL, a 5-inch phone will arrive on the market in the spring to 149 euros. I must say that the Lumia, more upscale but only Windows Phone had been commercial failures in spite of certain qualities. Time will tell if this strategy enables Nokia to regain some of its luster.
Sony Unveils Xperia Z2

On the other flagship now turn to the new Xperia Z2 phones coming out, the high-end Sony. With a 5.2 inch screen for 158 grams, the water resistant smartphone as dust appears no less than 3 GB of RAM with a quad core processor at 2.3 Ghz. The camera is 20.7 megapixels and shoots in 4K or 120 frames per second in 720p. Z2 also propose a system of noise reduction should be significant for the convenience of contacts that you call from the party to dork or one of many shootings in which you participate. Available in black, white and purple, Xperia Z2 is announced at 700 euros, and finally 699 in marketing release. Small flat perhaps internal storage is limited to 16GB.

Source: ift.tt/1lhcgni Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Posted by abdelfattahben on 2014-05-13 12:15:54

Tagged: , Galaxy , S5 , Gear , Fit , Nokia , X , Xperia , Z2

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

While the Mobile World Congress in full swing, it is impossible for us not to talk announcements from Samsung, Sony and Nokia.

But it is also connected accessories which will be discussed in today’s show.

As it is purely personal headband connected and anklet that I look most looking forward to have a truly complete range with my wrist that will tell me if I smell feet, my head, my measure heart and my ankle that will tell me how my head. Then and only then, I’ll swim in happiness connected in all its splendor with monitoring my health insured directly from a super computer in the basement of the White House. Anyway, here’s our recap of the first day of MWC in the # freshnews day.

Samsung introduces the New Galaxy S5 and Gear Fit phones coming out

And now it’s done, the new Galaxy S5 phones coming out has finally been officially presented. Fortunately for many of us no longer able to sleep as the suspense was unbearable. The facade of the S5 is almost identical to the S4 though it is slightly larger. Two touch buttons and a home button that also acts as a fingerprint reader, which is essential to the keke evening with the ability to make purchases or to switch to private mode found under the screen.

This is the back of the device that stands out the most because Samsung chose a material giving a faux leather stamped appearance which greatly improves the grip. Clement whispers in the atrium for the trolls, this is the special texture dressing. A heart rate sensor has been added under the photo sensor. Note also that the S5 waterproof and dustproof. Processor, camera and battery ahead of course very powerful, all technical details in our dedicated section. New S5 phones coming out should be available for sale from April 11 to an unknown price.

Side accessories wrist, you spoke yesterday Gear 2 and Gear 2 Neo, but Samsung returned to the charge, this time on the market bracelets connected. The Gear Fit runs Tizen and features a curved screen and 1.84 inch round. Besides the classical notifications bracelet reads your heart rate and will be equipped with an accelerometer as a gyroscope. It may therefore warn you if you ever walk upside down, for example, which can always be handy to not have the ankles swell. Note that the bracelet Gear Fit is both lightweight and hypoallergenic, what a shame for fans of mycoses.

Nokia goes Android

Nokia’s start with that, as rumor suggested, ended up spending Android. With models X, X Plus and XL, the Finnish manufacturer seeks to retain some specific Windows Phone as tiles or notifications fastlane center while enjoying the Android platform. However, Google has not certified the Nokia X, which will therefore don’t have a prior access to Google Play . However Nokia promises to provide the most popular applications, without more is known at this time. What is certain is that the phone will benefit from applications Microsoft Skype or as OneDrive Here Maps. Mails for Outlook and it will therefore not Gmail.

Six months after the beginnings of redemption by Microsoft and a few weeks before its realization brand therefore seeks to reconcile the two worlds to keep the best, all at entry level prices. In fact, the Nokia X will be available for sale at 119 euros and XL, a 5-inch phone will arrive on the market in the spring to 149 euros. I must say that the Lumia, more upscale but only Windows Phone had been commercial failures in spite of certain qualities. Time will tell if this strategy enables Nokia to regain some of its luster.

Sony Unveils Xperia Z2

On the other flagship now turn to the new Xperia Z2 phones coming out, the high-end Sony. With a 5.2 inch screen for 158 grams, the water resistant smartphone as dust appears no less than 3 GB of RAM with a quad core processor at 2.3 Ghz. The camera is 20.7 megapixels and shoots in 4K or 120 frames per second in 720p. Z2 also propose a system of noise reduction should be significant for the convenience of contacts that you call from the party to dork or one of many shootings in which you participate. Available in black, white and purple, Xperia Z2 is announced at 700 euros, and finally 699 in marketing release. Small flat perhaps internal storage is limited to 16GB.

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Gear Fit, Nokia X, new phones coming out, Xperia Z2, Galaxy S5

Source: New Phones Coming Out ift.tt/1lhcgni Visite New Phones Coming Out

Source: ift.tt/1jntM7F Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Posted by abdelfattahben on 2014-05-13 12:31:03

Tagged: , Galaxy , S5 , Gear , Fit , Nokia , X , Xperia , Z2

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Galaxy S5, Gear Fit, Nokia X and Xperia Z2

While the Mobile World Congress in full swing, it is impossible for us not to talk announcements from Samsung, Sony and Nokia.

But it is also connected accessories which will be discussed in today’s show.
As it is purely personal headband connected and anklet that I look most looking forward to have a truly complete range with my wrist that will tell me if I smell feet, my head, my measure heart and my ankle that will tell me how my head. Then and only then, I’ll swim in happiness connected in all its splendor with monitoring my health insured directly from a super computer in the basement of the White House. Anyway, here’s our recap of the first day of MWC in the # freshnews day.
Samsung introduces the New Galaxy S5 and Gear Fit phones coming out

And now it’s done, the new Galaxy S5 phones coming out has finally been officially presented. Fortunately for many of us no longer able to sleep as the suspense was unbearable. The facade of the S5 is almost identical to the S4 though it is slightly larger. Two touch buttons and a home button that also acts as a fingerprint reader, which is essential to the keke evening with the ability to make purchases or to switch to private mode found under the screen.

This is the back of the device that stands out the most because Samsung chose a material giving a faux leather stamped appearance which greatly improves the grip. Clement whispers in the atrium for the trolls, this is the special texture dressing. A heart rate sensor has been added under the photo sensor. Note also that the S5 waterproof and dustproof. Processor, camera and battery ahead of course very powerful, all technical details in our dedicated section. New S5 phones coming out should be available for sale from April 11 to an unknown price.
Side accessories wrist, you spoke yesterday Gear 2 and Gear 2 Neo, but Samsung returned to the charge, this time on the market bracelets connected. The Gear Fit runs Tizen and features a curved screen and 1.84 inch round. Besides the classical notifications bracelet reads your heart rate and will be equipped with an accelerometer as a gyroscope. It may therefore warn you if you ever walk upside down, for example, which can always be handy to not have the ankles swell. Note that the bracelet Gear Fit is both lightweight and hypoallergenic, what a shame for fans of mycoses.
Nokia goes Android

Nokia’s start with that, as rumor suggested, ended up spending Android. With models X, X Plus and XL, the Finnish manufacturer seeks to retain some specific Windows Phone as tiles or notifications fastlane center while enjoying the Android platform. However, Google has not certified the Nokia X, which will therefore don’t have a prior access to Google Play . However Nokia promises to provide the most popular applications, without more is known at this time. What is certain is that the phone will benefit from applications Microsoft Skype or as OneDrive Here Maps. Mails for Outlook and it will therefore not Gmail.

Six months after the beginnings of redemption by Microsoft and a few weeks before its realization brand therefore seeks to reconcile the two worlds to keep the best, all at entry level prices. In fact, the Nokia X will be available for sale at 119 euros and XL, a 5-inch phone will arrive on the market in the spring to 149 euros. I must say that the Lumia, more upscale but only Windows Phone had been commercial failures in spite of certain qualities. Time will tell if this strategy enables Nokia to regain some of its luster.
Sony Unveils Xperia Z2

On the other flagship now turn to the new Xperia Z2 phones coming out, the high-end Sony. With a 5.2 inch screen for 158 grams, the water resistant smartphone as dust appears no less than 3 GB of RAM with a quad core processor at 2.3 Ghz. The camera is 20.7 megapixels and shoots in 4K or 120 frames per second in 720p. Z2 also propose a system of noise reduction should be significant for the convenience of contacts that you call from the party to dork or one of many shootings in which you participate. Available in black, white and purple, Xperia Z2 is announced at 700 euros, and finally 699 in marketing release. Small flat perhaps internal storage is limited to 16GB.

from new phones coming out ift.tt/1lhcgni
source: New Phones Coming Out

Source: ift.tt/SWYcJk Galaxy S5, Gear Fit, Nokia X and Xperia Z2

Posted by abdelfattahben on 2014-05-13 12:31:09

Tagged: , Galaxy , S5 , Gear , Fit , Nokia , X , Xperia , Z2

The Core of Barred Spiral Galaxy NGC 1365

The Core of Barred Spiral Galaxy NGC 1365

The barred spiral galaxy NGC 1365 in Fornax is feeding material into its central region, igniting massive star birth and probably causing its bulge of stars to grow. The material also is fueling a black hole in the galaxy’s core. A galaxy’s bulge is a central, football-shaped structure composed of stars, gas, and dust.

A barred spiral galaxy is characterized by a lane of stars, gas, and dust slashing across a galaxy’s central region. It has a small bulge that is dominated by a disk of material. The spiral arms begin at both ends of the bar. The bar is funneling material into the hub, which triggers star formation and feeds the bulge. This Hubble image reveals only the core of the galaxy within its elongated bulge. The galaxy’s two large and prominent spiral arms are well outside the field of view.

For more information, visit: hubblesite.org/news_release/news/1999-34

Credit: Allan Sandage (The Observatories of the Carnegie Institution of Washington) and John Bedke (Computer Sciences Corporation and the Space Telescope Science Institute), John Trauger (Jet Propulsion Laboratory), NASA, ESA, Rainier Peleti, and C. Marcella Carollo (Johns Hopkins University and Columbia University)

Posted by NASA Hubble on 2018-05-18 18:14:17

Tagged: , NGC 1365 , Hubble , NASA , space , cosmos , astronomy , galaxy , barred spiral galaxy , Hubble Space Telescope , black hole

Backyard Milkyway

Backyard Milkyway

After a day of heavy rain, some hail, and then sunshine, the sky cleared enough to let the milky way shine

©Terry L Richmond

Posted by Terry L Richmond on 2018-09-28 05:13:43

Tagged: , sky , nature , smoke , astronomy , galaxy , landscape , night , space , outdoor , moon , grass , no person , atmosphere , field , hill , exploration , astronomical object , air , outer space , calamity , tree , riding , darkness , green , explosion , star , flying , outdoors , universe , track , sun , milky way , man , dust , water , spacecraft , hillside , science , mountain , meteorological phenomenon , large , dawn , midnight , train , travel , computer wallpaper , eruption , grassy , snow , standing

Computer Screen Cleaner – best cleaning Kit with Spray Bottle, Microfiber Cloth, Cleaning Brush for Apple Laptop, iphone, ipad, imac, Galaxy phone, Tablets, Monitor, Cell Phones, HD, Smart TV, Clean PC or Mac, 3D, LCD, LED, GPS, Xbox, and Keyboard

Computer Screen Cleaner - best cleaning Kit with Spray Bottle, Microfiber Cloth, Cleaning Brush for Apple Laptop, iphone, ipad, imac, Galaxy phone, Tablets, Monitor, Cell Phones, HD, Smart TV, Clean PC or Mac, 3D, LCD, LED, GPS, Xbox, and Keyboard

Computer Screen Cleaner – best cleaning Kit with Spray Bottle, Microfiber Cloth, Cleaning Brush for Apple Laptop, iphone, ipad, imac, Galaxy phone, Tablets, Monitor, Cell Phones, HD, Smart TV, Clean PC or Mac, 3D, LCD, LED, GPS, Xbox, and Keyboard

Computer screen like a dust magnet?… newestgadgetsinfo.com/computer-screen-cleaner-best-cleani…

Posted by carlophils on 2015-04-20 17:56:51

Tagged: , Apple , Best , Bottle , Brush , Cell , Clean , Cleaner , Cleaning , Cloth , Computer , Galaxy , iMac , iPad , iPhone , Keyboard , Laptop , Microfiber , Monitor , Phone , Phones , Screen , Smart , Spray , Tablets , Xbox

The Mice

The Mice

This colliding pair of spiral galaxies is known as "The Mice" because of the long tails of stars and gas emanating from each galaxy. Otherwise known as NGC 4676, they will eventually merge into a single giant galaxy.

In the galaxy at left, the bright blue patch can be identified as a cascade of clusters and associations of young, hot blue stars, whose formation has been triggered by the tidal forces of the gravitational interaction. Streams of material can also be seen flowing between the two galaxies in this Hubble Space Telescope image.

The clumps of young stars in the long, straight tidal tail (upper right) are separated by fainter regions of material. These dim regions suggest that the clumps of stars have formed from the gravitational collapse of the gas and dust that once occupied those areas. Some of the clumps have luminous masses comparable to dwarf galaxies that orbit in the halo of our own Milky Way.

For more information, visit: hubblesite.org/image/1183/news_release/2002-11

For a computer simulation of The Mice colliding, visit: hubblesite.org/video/285/news_release/2002-11

Credit: NASA, H. Ford (JHU), G. Illingworth (UCSC/LO), M. Clampin (STScI), G. Hartig (STScI), the ACS Science Team, and ESA

Posted by NASA Hubble on 2019-04-09 20:57:37

Tagged: , NGC 4676 , Interacting galaxies , colliding galaxies , galaxy collision , galaxy , galaxies , space , astronomy , NASA , Hubble , Hubble Space Telescope , cosmos

Interacting Galaxy NGC 4485

Interacting Galaxy NGC 4485

Galaxy NGC 4485 is irregular in shape, but it hasn’t always been so. Part of NGC 4485 has been dragged toward a second galaxy, named NGC 4490 — which lies out of frame to the bottom right of this image. Between them, these two galaxies make up a galaxy pair called Arp 269. Their interactions have warped them both, turning them from spiral galaxies into irregular ones.

NGC 4485 is the smaller galaxy in this pair, which provides a real-world example for astronomers to compare to their computer models of galactic collisions. The most intense interaction between these two galaxies is all but over; they have made their closest approach and are now separating. The trail of bright stars and knotty, orange clumps that we see here extending out from NGC 4485 is all that connects them — a trail that spans some 24,000 light-years.

Astronomers believe that many of the stars in this connecting trail could never have existed without the galaxies’ close encounter. When galaxies interact, hydrogen gas is shared between them, triggering intense bursts of star formation. The orange knots of light in this image are examples of such regions, clouded with gas and dust.

A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Kathy van Pelt.

For more information, visit: www.spacetelescope.org/images/potw1419a/

Credit: ESA/Hubble & NASA; Acknowledgment: Kathy van Pelt

Posted by NASA Hubble on 2019-04-11 05:57:45

Tagged: , NGC 4485 , NGC 4490 , Arp 269 , Interacting galaxies , colliding galaxies , galaxy collision , galaxy , galaxies , space , astronomy , NASA , Hubble , Hubble Space Telescope , cosmos , ESA , Hidden Treasures