Pleiades (Messier 45 or Seven Sisters)

Pleiades (Messier 45 or Seven Sisters)

Constellation: Taurus.
Session: 15 Nov 2018

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In astronomy, the Pleiades (/ˈplaɪədiːz/ or /ˈpliːədiːz/), or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

Source: Wikipedia
—————————————————————————————————

• Optics: Takahashi FSQ-85EDX super apo (quadruplet 85/450).
• Mount: Skywatcher N-EQ6 Pro.
• Filters: Astronomik LRGB (36 mm).
• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel.
• Camera: QHY163M mono.

L: 120x60s | binning 1×1 | Gain 120 | Offset 80 | cooled -20°c.

R: 10x60s | binning 1×1 | Gain 120 | Offset 80 | cooled -20°c.

G: 10x60s | binning 1×1 | Gain 120 | Offset 80 | cooled -20°c.

B: 10x60s | binning 1×1 | Gain 120 | Offset 80 | cooled -20°c.

Integration: 2,5 hours.
Correction: Darks, Flats, Bias

Notes: Mapped LRGB, maybe RGB filters not in focus as well, not polar alignment, moonlight.

Pixinsight, Adobe Photoshop.

© www.infinitalavita.comCristian Cestaro.

Posted by infinitalavita on 2018-11-15 22:00:00

Tagged: , takahashi , Astrofotografia , astrophotography , Cristian Cestaro , www.infinitalavita.com , infinita è la vita , infinite is life , messier 45 , m45 , seven sisters , sette sorelle , pleiadi

Mars | 2018-07-16 6:26 UTC | RGB

Mars | 2018-07-16 6:26 UTC | RGB

Seeing was not bad, but not as good as July 14th, and transparency was extremely variable due to clouds coming through. While processing the Mars images from this night, our hard drive started slowing down and eventually started giving I/O errors, usually a sign that a drive has failed. Fortunately, restarting my computer fixed all the problems but I decided to back up the remaining 1 terabyte of unprocessed data to another drive to be safe.

Notes:
Syrtis Major is rising.
Dust clouds appear to be escaping from Hellas Basin.
The south polar cap is mostly obscured by dust.

Telescope: Celestron C14 EdgeHD
Camera: ZWO ASI290MM
Barlow: Astro-Physics Advanced Convertible Barlow
Filters: Chroma Red, Chroma Green, Chroma Blue

Link: www.chappelastro.com/astrophotography/solar_system/mars/2…

Posted by Chappel Astro on 2018-10-23 02:52:36

Tagged: , Mars , Planet , Space , Astronomy , Astrophotography , Celestron , ZWO

The Pleiades (M45)

The Pleiades (M45)

The Pleiades (also known as the Seven Sisters and Messier 45). This is one of my favourite autumn targets and one I feel compelled to image every year in order to try and improve on previous attempts. Their rising heralds the arrival of the constellation of Orion which pursues them. I love the mythology associated with the Pleiades and Orion and different cultures have their own stories to explain them. M45 always seems like it should be a fairly easy object to image and it is, however processing it is another matter. This image was made over two nights (24/09/18 and 03/10/18). The original idea was to capture all the data in one night but the first night, although being very clear, was a full Moon and many of the subs were washed out making processing a nightmare. The second night the Moon wasn’t an issue but conditions were still less than ideal and we were shooting into a murky sky with high cloud. Ultimately I combined the best shots from both nights and this is the result…by no means perfect but as good as I can get it, not too noisy and a reasonable amount of nebulosity coming through.

The Pleiades are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and luminous stars that have formed within the last 100 million years. A faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now likely an unrelated foreground dust cloud in the interstellar medium, through which the stars are currently passing.

Computer simulations have shown that the Pleiades were probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

Information courtesy of Wikipedia:
en.wikipedia.org/wiki/Pleiades
en.wikipedia.org/wiki/Pleiades_(Greek_mythology)

060 x 300 second exposures at Unity Gain (139) cooled to -20°C
030 x dark frames
063 x flat frames
100 x bias/offset frames
Binning 1×1

Total integration time = 5 hours

Captured with APT
Guided with PHD2
Polar Alignment with SharpCap Pro
Processed in Nebulosity, Fitsworks, Microsoft ICE and Photoshop

Equipment
Telescope: Sky-Watcher Explorer-150PDS
Mount: Skywatcher EQ5
Guide Scope: Orion 50mm Mini
Guiding Camera: ZWO ASI120MC
Imaging Camera: ZWO ASI1600MC Pro
Baader Mark-III MPCC Coma Corrector
Light pollution filter

Posted by Davide Simonetti on 2018-10-07 11:51:56

Tagged: , Pleiades , Seven Sisters , Messier 45 , Star Clusters , Stars , M45 , Maia , Electra , Taygete , Alcyone , Celaeno , Sterope , Merope , Pleione , Atlas , Astrophotography , Astronomy , Space

M45 – The Pleiades Cluster

M45 - The Pleiades Cluster

The Pleiades, also known as M45, the Seven Sisters or Subaru (Japan), is an open star cluster containing middle-aged stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

[Info from Wikipedia]

ZWO ASI1600MC-Pro with Baader IR/UV cut filter
Explore Scientific ED80
Celestron AVX Mount, guided
105 minutes of integration time

Shot from the L&A County Dark Sky Viewing Area in Erinsville, Ontario

Posted by Dark Arts Astrophotography on 2018-08-11 20:24:48

Tagged: , astrophotography , astronomy , space , Sky , stars , star , science , m45 , Subaru , subarudarksky , Pleiades , Cluster , Messier

M45- The Pleiades Cluster

M45- The Pleiades Cluster

The Pleiades, also known as M45, the Seven Sisters or Subaru (Japan), is an open star cluster containing middle-aged stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

[Info from Wikipedia]

Nikon D7000
Explore Scientific ED80
Celestron AVX Mount
9 x 120 second exposures @ ISO 1600

Shot from the North Frontenac Township Dark Sky Preseve near Plevna, Ontario

Posted by Dark Arts Astrophotography on 2016-08-28 16:26:41

Tagged: , astrophotography , astronomy , space , stars , Sky , star , Cluster , Pleiades , Subaru , night , Nebula , nature , natur

Milky Way

Milky Way

The Milky Way is the galaxy that contains our Solar System. The Milky Way is a barred spiral galaxy some 100,000–120,000 light-years in diameter, which contains 100–400 billion stars. It may contain at least as many planets as well. The Solar System is located within the disk, about 27,000 light-years away from the Galactic Center, on the inner edge of one of the spiral-shaped concentrations of gas and dust called the Orion Arm. The stars in the inner ≈10,000 light-years form a bulge and one or more bars that radiate from the bulge. The very center is marked by an intense radio source named, Sagittarius A*, which is likely to be a supermassive black hole. Stars and gases at a wide range of distances from the Galactic center orbit at approximately 220 kilometers per second. The constant rotation speed contradicts the laws of Keplerian dynamics and suggests that much of the mass of the Milky Way does not emit or absorb electromagnetic radiation. This mass has been given the name “dark matter”. The rotational period is about 240 million years at the position of the Sun. The Galaxy as a whole is moving at a velocity of approximately 600 km per second with respect to extragalactic frames of reference. The oldest known star in the Galaxy is at least 13.6 billion years old and thus must have formed shortly after the Big Bang. Surrounded by several smaller satellite galaxies, the Milky Way is part of the Local Group of galaxies, which forms a subcomponent of the Virgo Supercluster.

Posted by pcbackup154 on 2014-06-17 16:27:25

Tagged: , abstract , airglow , argentina , astrophotography , canon , computer , deepsky , dream , galaxy , high , landscape , light , map , meade , mendoza , milkyway , music , nature , night , nightglow , nightphotography , nikon , photoshop , planet , process , stacker , stars , sun , time , way

Pleiades (Messier 45)

Pleiades (Messier 45)

Constellation: Taurus.
Session: 17 Jan 2018

Follow me on:
Instagram | www.infinitalavita.com

Some on sale on microstocks here:
Shutterstock | Fotolia.

In astronomy, the Pleiades (/ˈplaɪədiːz/ or /ˈpliːədiːz/), or Seven Sisters (Messier 45 or M45), is an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. The celestial entity has several meanings in different cultures and traditions.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades was probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.

Source: Wikipedia
—————————————————————————————————

• Optics: Primalucelab 80/500 APO (doublet).
• Mount: Skywatcher N-EQ6 Pro.
• Filters: Astronomik luminance, IDAS LPS D1.
• Accessories: QHYCCD QHYCFW-2-M motorized filter wheel, Primalucelab focal reducer (0.8x)
• Camera: QHY163M mono.

L (IDAS LPS D1): 12x300s | binning 1×1 | Gain 60 | Offset 15 |
cooled – 20°c.

Integration: 1 hour.
Correction: Darks, Flats, Bias

Notes: Only luminance, used medium dither.

Pixinsight.

© www.infinitalavita.com • Cristian Cestaro

Posted by infinitalavita on 2018-01-17 22:00:00

Tagged: , pleiades , pleiadi , m45 , messier 45 , qhy163m , qhy , www.infinitalavita.com , Cristian Cestaro , infinita è la vita , infinite is life , Astrofotografia , astrophotography , astrophotographer , astrofotografo

Zodiacal Light

Zodiacal  Light

This panorama of 2016’s very first sighting of the Milky Way in the area was shot with a timeless beauty, a vintage Minolta lens, the MC Rokkor PG 58mm/f1.2 to be exact. I was skeptical about a vintage lens lacking all the modern lens coatings to perform the way it did. It is akin to using a 1968 slide ruler (Google it you, millennials!!) to perform a complex calculation that would require a computer now.

That is not what is special about this picture. What is special is the fact that I captured the more timeless beauty, the Zodiacal Light that is so coveted by astrophotographers.

Thanks to Wisanu Boonrawd for identifying it. Zodiacal light is a faint, roughly triangular, diffuse white glow seen in the night sky that appears to extend up from the vicinity of the Sun along the ecliptic or zodiac. In this picture you see the Zodiacal light right at the bottom center of the horizon. Zodiacal light is produced by sunlight reflecting off dust particles in the Solar System known as cosmic dust. (With help from Wikipedia)

Posted by Rajesh Jyothiswaran on 2017-01-11 04:27:27

Tagged: , A7RII , Hagerman Milky Way , ILCE-7RM2 , Light , Minolta MC Rokkor PG 58mm f1.2 , National , Night , Nightscape , Sony , Texas , Wildlife , Zodiac , Zodiacal Light , astrophotography , cloud , sunrise

Pleiades, 50mm, No Tracking, Finger Lakes region of New York

Pleiades, 50mm, No Tracking, Finger Lakes region of New York

Now that the Milky Way is settling down for the winter, I decided to move on to other subjects on this very clear night. My last few outings have been increasingly plagued by dew forming on my lens. Actually, my entire camera has been dripping wet most nights. So I went to Walmart yesterday and grabbed a few sets of hand-warmers and taped a pair around my lens. They fit perfectly! No need to wipe every 90 seconds. I shot for hours without any dew at all, while my car made puddles around its perimeter.

Because my nifty-fifty gets nasty real quick on any stars that aren’t near dead-center, I had to re-frame the Pleiades every 5 minutes or less. That makes a pretty big difference. I also shot nearly 600 dew-free frames of Andromeda last night. Here’s that:

www.flickr.com/photos/15304966@N06/36609692994/in/photost…

I used DeepSkyStacker to stack 238 images captured with my Canon 50mm f/1.8 set to f/2.2, 5-seconds, ISO 12800 on a Canon 60D body.

I stretched the output just a bit in Photoshop — only 1-1/2 Levels adjustments — any more brought all the noise back. I was pleased to get this much dust glow without having a background that looked like a rain-soaked end-of-semester sofa sitting at the curb. I tweaked the colors a bit to get some blue back, and then cropped and re-sampled the image 200 percent.

My computer, my drives and my long lens are conspiring to get a cheap tracker for me this Christmas. They’ve had just about enough of these shenanigans.

Posted by Douglas Gray on 2017-09-25 06:19:11

Tagged: , astrophotography , Pleiades , 50mm , astronomy , stars , dust , gas , cluster , hand , warmers , DeepSkyStacker , night

Pleiades

Pleiades

The Pleiades (M45). This is a shot I’ve been wanting to do for a long time. Previous attempts were unsatisfactory because my 127 Mak has too much focal length for this object and looked straight through it and using a camera lens made unattractive spokes around the stars caused by the iris of the lens. With the 150mm Newtonian scope the framing is pretty much perfect and plenty of nebulosity can be captured. Also the spikes caused by the secondary mirror spider add to the image. Not perfect perhaps but definitely the best attempt so far. This image has been edited sine originally being posted with extra data added and flat files replaced.

[Wikipedia] In astronomy, the Pleiades, or Seven Sisters (Messier 45 or M45), are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky.

The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium, through which the stars are currently passing. Computer simulations have shown that the Pleiades were probably formed from a compact configuration that resembled the Orion Nebula. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.[en.wikipedia.org/wiki/Pleiades]

68 x 75 second exposures at 400 ISO (one hour and 15 minutes integration time).
68 x dark frames
24 x flat frames
21 x bias/offset frames (subtracted from flat frames only)

Captured with APT
Guided with PHD2
Processed in Nebulosity and Photoshop

Equipment:
Sky-Watcher Explorer-150PDS
Skywatcher EQ5 Mount
Orion 50mm Mini Guide Scope
ZWO ASI120 MC imaging and guiding camera
Canon 700D DSLR

Posted by Davide Simonetti on 2017-09-17 20:28:52

Tagged: , Pleiades , Messier 45 , M45 , Seven Sisters , Stars , Space , Astronomy , Astrophotography