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Triplet de galaxies spirales dans la constellation du lion, situées à 35 millions d'années lumière.
A gauche NGC 3628, et à droite M65 (NGC 3623) en haut et M66 (NGC 3627) en bas
Prise le 20/05/2020
200/1000 EQ6-r pro
Autoguidage OAG + T7m (ASI 120mm)
Canon 1000D défiltré partiel
49*180" => 2h27'
ISO 800
DOF 50-100-20
Traitement Siril + Pixinsight
La Comète C/2020 F3 Neowise de passage au dessus des alignements de Carnac.
Canon 1300D stock
Samyang 14mm f/2.8
ISO 800
20*15s
2*30s pour l'avant plan
Omegon Mini Track Lx2
Traitement Sequator Lightroom et Photoshop CC
19-4-2021 Messier 63 or M63, also known as NGC 5055 or the seldom-used Sunflower Galaxy, is a spiral galaxy in the northern constellation of Canes Venatici with approximately 400 billion stars.
Distance to Earth: 27 million light years
Distance: 29.3 Mly (8.99 Mpc)
Apparent size (V): 12′.6 × 7′.2
Group or cluster: M51 Group
Redshift: 484 km/s
Constellation: Canes Venatici
39 light frames 32 dark frames 180sec's iso800.
Nikon D750-Nikon600mm Fl f4 prime & Nikon 2x teleconverter on SWNEQ6-R-Pro mount PHD2 guide- deepsky stacker - Photoshop, bortle 4.
Last night I added some time to a session I did in February for a total of just over four hours of 3 minute subs. Struggled to beat the first version I did of this 2 years ago, and that was only 28 minutes for heavens sake! Got there in the end though :)
That star was gagging for some spikes :)
SW ED80/EQ5
Nikon D70 modded, Baader Neodymium filter
84 x 180sec subs, iso 800, for a total of 4 hours 10 minutes
Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD
Stacked in DSS and processed in CS5. Spikes by StarSpikes Pro
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山上的七姊妹
提起深空拍攝十居其九會認為是很困難的，還要花上許多時間去拍攝及處理，加上這些深空天體再過數千年也不會有變化，只要有不錯器材，加上天氣及時間的許可，很容易便會得到一張美麗的深空天體相片。想要有變化就要像風景一樣加入不同地景去配合，令深空天體構圖不再死板。
往時就曾經嘗試多個不同的深空及地景組合，但只屬於 Wildfield 方式拍攝，深空天體不太突出，被地景搶了風頭。今次就嘗試用上 135mm 鏡頭找尋簡單地景，深空天體也可以變得大一點。剛好在陰那山的第一晚設定好器材後，便看見七姊妹星團在飯堂上的水庫探頭而出，用上 5 分鐘時間將其捕獲下來，再花上 30 秒地景，簡單地在 Photoshop 處理一下便得到這張「山上的七姊妹」。
Photo by siuba
日期：2015/10/16 @ 梅州陰那山
相機：Sony A6000
鏡頭：Samyang 135 mm f/2.0 ED UMC
追星儀：Kenko Skymemo RS
設定：ISO 1600, 300s x1 (30s x1 地景)
香港拍攝難度：★★ (五星最難)
建議鏡頭焦距：135 ~ 300mm
適合拍攝月份：9 月 ~ 12 月 (香港)
I managed to add 3 hours to my previous version of this on Saturday night, but that has little to do with the above result. This is my first attempt at collaboration with my good friend Dave Williams (whom I have never met, as he lives in the frozen northern wastelands known as Manchester). Dave works in NB, and provided Ha, which I added as a luminance layer (after trying a few other techniques without success), and this is the result. Now I'm fully aware that what you can see above is predominantly luminance, with a bit of RGB thrown in to provide character, so Dave very much deserves most of the credit for this image. However, as he's not on Flickr, I'm happy to accept it :)
This is also my first attempt at combining Ha with RGB (albeit as luminance), and It makes my previous version look a bit sick :)
RGB:
SW ED80/EQ5
Nikon D70 modded, Baader Neodymium filter
45 x 180secs iso 800, 60 x 180secs iso 640 (5 hours 15 minutes)
Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD
Stacked in DSS and processed in CS5
Ha:
15 x 600secs (2 hours 30 minutes)
Used Hasselblad 250mm f4 lens at f4 (cropped - quite a bit!)
Moravian G2 8300
Astrodon 5nm Ha filter
Takahashi EM200 mount
Guiding: DMK through an old 100mm M42 lens
Three clear nights on the bounce - whatever next?! :)
Took advantage of the weather to give this a really good crack, something I've been waiting to do since the arrival of the ED80. This is full frame, so the focal length is ideal. As near as dammit 8 hours total exposure, made up of various sub lengths and iso settings. The variation in iso seems to improve the overall noise in the final tif, so I was able to stretch this a little further (some would say too far!). Not sure if it's a little too contrasty - all a matter of personal taste I suppose. Overall, I'm very pleased with this :)
SW ED80/EQ5, cropped
Nikon D70 modded, Baader Neodymium filter
18 x 4 mins iso 1600
30 x 6 mins iso 1250
22 x 10 mins iso 800
Guiding: Quickcam Pro4000/9x50 finderscope, PHD
Stacked in DSS and processed in CS5
A new object for me, and interesting looking area with slight reflection nebula in places, i'm sure there is more than ive been able to pick up but i managed to get some blue at the top there :) there is also dark nebula in near-black and obviously the red emission nebula forming the famous cave shape near the bottom.
ED80 / 350D / EQ6 - CLS FILTER
6 x 5min 4 x 10min lights / 6 darks and a batch of flats and bias frames (for a change :) )
Reprise du traitement de la grande nébuleuse d'Orion M42 avec Pixinsight
Publication originale du 21/11/2019 : flic.kr/p/2hNUMvL
Newton SW 200/1000 sur N-EQ5
Canon 1000D défiltré partiel
Correcteur Baader MPCC MkIII
ISO 1600
221x30" => 1h50'
DOF 60-50-15
2019. 04. 27.
Mount: HEQ-5 Goto
OTA: Skywatcher 200/800
Skywatcher F4 CC
Canon EOS 6D (modfied)
Expo: 42X210s light, 20 dark, 20 flat, 20 flatdark, ISO 1600
Processed with: Nebulosity, Startools, Photoshop
After a few cloudy and foggy nights, I finally had the opportunity to get to know my new digital telescope “ZWO Seestar S50 Smart Telescope” better and try it out with excellent visibility.
The constellation of Orion is one of the most beautiful and striking winter constellations. It contains a star-forming region and many interesting celestial objects. The most famous are probably the Horsehead Nebula and the Orion Nebula.
Left photo: M42 (Orion Nebula) and M43 (De Mairan's Nebula, which looks like a sphere), both are in the area of Orion's sword
Right photo: IC 434 with Horsehead Nebula & NGC 2024 (Flame Nebula) with Alnitak, the star that stands on the left in Orion's belt.
Post-processing with LuminarNeo.
===
Nach ein paar trüben und nebligen Nächten gab es nun endlich wieder die Gelegenheit, mein neues Digitalteleskop „ZWO Seestar S50 Smart Teleskop“ näher kennenzulernen und bei hervorragender Sicht auszuprobieren.
Das Sternbild Orion ist eines der schönsten und auffälligsten Wintersternbilder. Es enthält ein Sternentstehungsgebiet und viele interessante Himmelsobjekte. Die bekanntesten sind wohl der Pferdekopfnebel und der Orionnebel.
Linkes Foto: M42 (Orionnebel) und M43 (De Mairans Nebel, der wie eine Kugel aussieht), beide befinden sich im Bereich von Orions Schwert.
Rechtes Foto: IC 434 mit dem Pferdekopfnebel und NGC 2024 (Flammennebel) mit Alnitak, dem Stern, der links im Gürtel des Orion steht.
Taken with a TMB92L, Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 32 180-second light frames and 28 180-second dark frames, all at ISO 400, as well as 31 flat and 25 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop. Diffraction spikes added with StarSpikes Pro.
Another Messier object to check off the list, and the only one in Capricornus. The star to the left (east) is 41 Cap. If you look closely, you will see some tiny (very distant) galaxies that share the view with this globular cluster.
This image is a stack of 23 guided 90s exposures made with a Celestron Edge HD 925 at f/2.3 with HyperStar and an Atik 314L+ color CCD. Preprocessing in Nebulosity; stacking and initial processing in PixInsight; final touches in PS CS 5.1.
The image center (J2000) is at
RA 21h 40m 50s
DEC -23° 12' 6"
NGC 7635, ou nébuleuse de la Bulle, est une nébuleuse d'environ 10 années-lumière de diamètre située dans la constellation de Cassiopée.
Elle est formée par le vent stellaire créé par l'étoile SAO 20575 à une vitesse de plus de 1 700 km/s.
A gauche l'amas ouvert Messier 52
Newton SkyWatcher 200/1000
Monture EQ6-r pro
Canon 1000D défiltré partiel
Correcteur de coma Baader MPCC Mk III
Filtre Ha EOS Clip Astronmik 12 nm
Autoguidage OAG + ZWO ASI 290mm mini
ZWO EAF
ASIAIR Pro
Traitement Pixinsight + Photoshop CC
Prise le 28/11/2020, lune 96% :
110*300" => 9h10'
ISO 800
M78 (ou NGC 2068) est une nébuleuse par réflexion située dans Orion. C’est la nébuleuse diffuse la plus brillante d'un groupe de nébuleuses qui comprend NGC 2064 et NGC 2067.
Matériel :
Newton SkyWatcher 200/1000
Monture EQ6-r pro
Canon 1000D défiltré partiel
Correcteur de coma Baader MPCC Mk III
Autoguidage OAG + ZWO ASI 290mm mini
ZWO EAF
ASIAIR Pro
Traitement Pixinsight + Photoshop CC
Session 1 le 18/12/2020 :
50*300" => 4h10'
ISO 800
Session 2 le 09/01/2021
54*300" => 4h30'
ISO 800
TOTAL 8h40'
Taken - after a recording time of 32 minutes - with my new digital telescope “ZWO Seestar S50 Smart Telescope”.
The Orion Nebula or Great Orion Nebula (also known as Messier-42, M42 or NGC 1976) is a diffuse nebubula situated in the Milky Way, being south of Orion's Belt in the constellation of Orion, and is knoes as the middle "star" in the "sword" of Orion. It is one of the brightest nebulae and is visible to the naked eye as a bright spot in the night sky.
De Mairan's Nebula (Messier-43, M43 or NGC 1982 is physically part of the Orion Nebula and looks like a sphere, and is separated from Orion Nebula by a dense (black) lane of dust known as Northeast Dark Lane.
At the top left you can already see the Running Man or Ghost Nebula (Sh2-279, S279 or NGC 1977) - still quite dark.
The photo consists of many individual images, each exposed for 10 seconds over a period of 32 minutes and automatically stacked by the Smart Telescope. This suppresses image noise and reveals more details - the longer the recording time, the clearer the result.
I then edited the resulting photo with Luminar Neo and jpg-Illuminator.
===
Aufgenommen nach einer Aufnahmezeit von 32 Minuten mit meinem neuen Digitalteleskop “ZWO Seestar S50 Smart Teleskop”.
Der Orionnebel oder Große Orionnebel (auch bekannt als Messier-42, M42 oder NGC 1976) ist ein diffuser Nebel in der Milchstraße, der sich südlich (unterhalb) des Oriongürtels im Sternbild Orion befindet und als mittlerer „Stern“ im „Schwert“ des Orion bekannt ist. Er ist einer der hellsten Nebel und am Nachthimmel mit bloßem Auge als heller Fleck sichtbar.
De Mairans Nebel (Messier-43, M43 oder NGC 1982) ist physikalisch Teil des Orionnebels und sieht aus wie eine Kugel. Er ist vom Orionnebel durch eine dichte (schwarze) Staubspur getrennt, die als "Northeast Dark Lane" bezeichnet wird.
Oben links kann man bereits - noch recht dunkel - den "Running Man" oder Geisternebel (Sh2-279, S279 oder NGC 1977) erkennen.
Das Foto besteht aus vielen Einzelbildern, die während eines Zeitraums von 32 Minuten jeweils 10 Sekunden belichtet und durch das Smart Telekop automatisch "gestackt" (gestapelt) wurden. Dadurch wird das Bildrauschen unterdrückt und es werden mehr Details sichtbar - je länger die Aufnahmezeit, desto klarer also das Ergebnis. Danach habe ich das so entstandene Foto mit Luminar Neo und jpg-Illuminator nachbearbeitet.
www.focustoinfinity.de/blog/Astrofotografie: Was ist eigentlich Stacking?
www.astroshop.de/magazin/produkttests/teleskop-tests/smar...
Same ol' same ol' :)
I uploaded a version of this a month or so back that was supposed to be a combination of this year's data and last year's. Turned out it wasn't - what I got out of DSS was exactly last years data - it completely ignored this year's. DSS playing silly buggers.
This, on the other hand, is the combined data - 2 hours 23 minutes of 60 second subs. This is about three quarter frame, and rotated to provide a different angle - change is as good as a rest. Nice and small and cute :)
SW 200p, EQ5 unguided
Nikon D70 modded, iso1600, Baader MPCC and Neodymiun filter
142 x 60sec
darks, bias and flats.
Stacked in DSS and processed in CS5
Autosave3
I was browsing through some old captures, and then find this one. Why did I forget to publish it?
I don't know! Well, better later than never.
This was my first capture using my T6i, back on July 9, 2020.
I remember now, why I did capture the Crux again. My hope was to compare, side by side, my old Nikon D5000 and the "new" Canon T6i. Well, my D5000 served me well for a long time, but now it needs to retire. :)
The old picture: www.astrobin.com/sr6a6v/B/?nc=user
No darks, flats or bias
142x30s, ISO 1600
Nikon 135mm AI f2.8(f4) with Canon EOS Adapter
The Crux constellation and the Coalsack Nebula (C99) captured with an old DSLR.
My Nikon D5000 have a serious issue with its sensor. On the right corner and top of the image we can see it failure. A region of the sensor which does have a lack of sensitivity.
First I though it was a "flat frame issue", but it's not. Darks and bias doesn't help.
Only after a carefully processing I'm "ok" in posting this picture. But my Nikon D5000 is old, and I'm not happy to say that it needs to retire.
I found an empty piece of plastic the other day, on which I had no hesitation in slapping a modded Canon 500D, purchased at a very reasonable price from James Stannard here. There then followed a bit of a learning curve - having been used to a Nikon - which has taken up the best part of two weeks. But I got there in the end :)
This is another collaboration with my good friend Dave Williams from the northern wastelands, who generously donated large portions of Ha, used as luminance.
I will now spend some time trying to breathe life into my Nikon D70 so that I can inflict some considerable pain on the thing, before I eventually kill it - slowly.... :)
RGB:
SW ED80/EQ5
Canon 500D modded, Baader Neodymium filter
90 x 180 sec subs, iso 1600, total 4 hours 30 minutes
Acquisition: APT
Guiding: Quickcam Pro4000/9x50 finderscope, PHD
Stacked in DSS and processed in CS5.
Ha (Dave Williams):
Takahashi FS78 with reducer
G2 8300 camera
10 x 10 minute subs for 1 hour 40 minutes
The complete mosaic with this globular cluster and its surroundings can be viewed at flic.kr/p/2m84gRJ
Globular cluster M4 is the closest globular cluster to the Earth. It is situated in a very colorful part of the sky known as the Rho Ophiuchi dust complex. You can get a hint of the colors in the background of this image. This is part of the larger mosaic I am working on constructing around Antares. This is proving to be a good bit more challenging than the one near Sadr ( flic.kr/p/tYxubt ), mostly due to so many bright stars in the region. The gradients from the colors of interstellar dust and gas is also a challenge to work with.
The panels of the mosaic are stacks of 90 s shots. This portion includes 3 panels. There are 4 in the i Sco mosaic posted earlier (available at flic.kr/p/2gbsUqJ ). The 90 s shots were taken with a guided Celestron Edge HD 925 at f/2.3 with HyperStar and an Atik 314L+ one shot color camera. Preprocessing in Nebulosity with flats, darks, and bias frames; stacking, compiling the mosaic, and initial processing in PixInsight; final touches in PS CS 5.1.
Image center (J2000) is at
RA 16h 22m 57s
DEC -26° 23' 1"
The image spans about 1.5° x 1.0°.
Very early this morning, I had an epiphany, and made a big discovery.
As most of you know, I own a 10" Meade LX200 telescope. The focal ratio of the telescope is f/6.3, which puts it about 15-20 percent optically faster than a standard f/10 Schmidt-Cassegrain.
For a couple years, I've had an f/6.3 focal reducer/field flattener for a smaller f/10 8-inch Meade LX5 telescope I also own.
I decided to experiment - and in the process of doing so, I made my 10" LX200 optically faster by 50%. What does this mean?
I now have significantly more light gathering power, at a small cost. The focal length is halved from 1600mm to 800mm.
Not only that, I can shorten my exposure time by half!
This is the first result: Messier 42 - AKA The Great Orion Nebula.
10x5 seconds for the core
20x30 seconds for the outer fringes.
15x5-second dark calibration frames
30x30 second dark calibration frames
10 "T-shirt" flat calibration frames
It would've taken me about twice as long to gather the data to produce this image!
A very big spiral galaxy in the Triangulum constellation.
► IN THE FOV:
Nebulas: M33
► TECHNICAL DETAILS:
Canon EOS60D (no-mod)
TS APO 804 FPL53
HEQ5 (unguided)
480mm - f/6.0 - ISO800
Light Frames: 10x180'' + 5x240''
Dark Frames: 11x180'' + 7x240''
Bias Frames: 19x
Click HERE for more astrophotography and details! ;)
► FOLLOW ME ON:
English below:
Il Velo del Cigno è un resto di supernova che ha un'estensione angolare di circa 3 gradi e, secondo le osservazioni più precise, la distanza da noi è di circa 1470 anni luce. E' catalogato come Sh2-103 (W78 come sorgente radio) ma le sue parti hanno identificazione del più utilizzato catalogo NGC, la parte orientale è NGC 6992 e 6995, mentre la parte più occidentale è NGC6960.
Per riprenderlo quasi nella sua interezza, ho esguito un mosaico di 2x2, ogni pannello ha circa 5 ore e mezza di integrazione con pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm per la nebulosa mentre per le stelle sono un'ora di pose da 60 secondi senza filtri. Telescopio newton 150/600 con correttore Tecnosky 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione in Pixinsight.
The Cygnus Loop is a supernova remnant with an angular extension of about 3 degrees and, according to the most precise observations, its distance from us is about 1,470 light-years. It is cataloged as Sh2-103 (W78 as a radio source), but its parts are identified in the most widely used NGC catalog: the eastern part is NGC 6992 and 6995, while the westernmost part is NGC 6960.
To capture it almost in its entirety, I created a 2x2 mosaic. Each panel took about 5.5 hours of integration, with 10-minute guided exposures using an Antlia ALP-T 5nm dual-band filter for the nebula, and one hour of 60-second exposures without filters for the stars. 150/600 Newtonian telescope with Tecnosky 0.95x corrector, Tecnosky Vision 571C camera, Eq6-R Pro mount, Pixinsight processing.
IC434 + NGC 2024 + NGC 2023 in the constellation of Orion (near Orion's Belt)
Taken with digital telescope “ZWO Seestar S50 Smart Telescope” in Mosaic/Framing mode with 62 minutes (372 x 10 seconds) exposure time edited with Luminar Neo, Neat Image and Jpg Illuminator.
I would have liked to expose for longer, but then the high fog came.
NGC 281, often referred to as the Pacman Nebula due to its resemblance to the character from the video game "Pac-Man," is an emission nebula located in the constellation Cassiopeia. It lies about 9,200 light-years away from Earth. NGC 281 is part of the Milky Way galaxy and is a region of active star formation.
Here pictured from Stockholm Bortle 8/9 with a WO Magrez90 and a ASI294MM can. About 5 hours of data, processed in pixinsight
Località: Verona, Italia
Data: 18.10.2022
Partendo dall'originale monocromatico, ho lavorato con i livelli di Photoshop associando i colori dei vari gas di questo stupendo oggetto, cercando di essere il più fedele possibile.
Prossima sessione sarà riprende questo oggetto con il filtro OII per poi integrarlo con il monocromatico di questa foto fatto in H-alpha... cosi vedremo realmente i colori di questa nebulosa.
100 x 60s
(1 hr, 40 min total)
ZWO ASI1600MM Pro
Newton Skywatcher 150/750 PDS Explorer
EQ - Celestron AVX Advanced VX
Filter H-Alpha
DSS + Photoshop
his is a re-processing of Lagoon and Trifid project from Abastumani. July 17th 2015.
Just 5 x 2 mins of exposures with regular Nikon D750 camera.
TS80APO refractor (480mm f/6)
iOptron iEQ30 Pro mount
processed in PixInsight
slightly enhanced in Lr
Clustermania :)
A three hour gap in the endless, persistent cloud cover gave me just enough time to do another one of these things. Nebulous stuff takes several sessions under my light polluted skies, and would take months with the weather being as it is, so clusters beckon.
This is M38, aka NGC 1912, aka The Starfish Cluster (don't ask me why), and to the right is NGC 1907. M38 is about 4,200 light years away and is about 25 light years in diameter, similar to that of its more distant neighbour M37. It is about 220 million years old. NGC 1907 is around 4,500 light years from Earth. It contains around 30 stars according to Wiki (looks like more to me) and is over 500 million years old.
This is a closer crop than my previous two cluster efforts, for two reasons: first, the framing was rubbish, and second, the stars at the edges reminded me just how much I need a field flattener!
I'm running out of double clusters to do :)
SW ED80/EQ5
Canon 500D modded, Baader Neodymium filter
56 x 180 sec subs, iso 1600
Acquisition: APT
Guiding: Quickcam Pro4000/9x50 finderscope, PHD/EQMOD/AstroEQ
Stacked in DSS and processed in CS5.
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獵戶座褔祿壽三星一帶 Orion Belt Wide Field
近日天氣仍然時好時壞，數日前趁著好天氣匆匆的走到深空拍攝勝地試一下新鏡頭。現時初昇的獵戶仍然在較低位置，加上天氣的不濟，最後只能拍到8幅共32分鐘總曝光，訊噪比十分低。但總算為新鏡頭開光， 當作試鏡大家就先忍耐著看一下吧 :)
Photo by Michael Leung
日期：2015/09/13 @ 北潭涌
相機：CentralDS 600D @ -4c
鏡頭：Samyang 135 /2 @ f2.8
追星儀：iOptron ZEQ25
導星：Guided QHY5LII Mono
其他：IDAS LPS-D1 Filter
設定：ISO 1600, 240sec x 8 (Darkframe / Bias)
香港拍攝難度：★ (五星最高)
建議鏡頭焦距：100 ~ 300mm
適合拍攝月份：10月 ~ 3月 (香港)
大概方向：東昇西落
We had several clear nights on the bounce a week or two back, and I spent the time imaging this thing as Cygnus was still getting up above my house a little late. This is just short of 10 hours, but I put it away because I got the feeling it was out of focus when comparing it with the version I did back in 2011 with the 200p. The stars in the cluster don't look quite as tight as I think they should.
Whaddya reckon? Out of focus?
Cloudy nights begs for revisits of old data ...
18x180s SII
14x180s Hα
4x180s OIII
100xBias
50xFlats per channel
50xDark Flats per channel
100xDarks
Processed in Pixinsight
Taken with a TMB92L, Canon T3i DSLR, and Celestron Advanced VX mount. Consists of 41 light and 39 dark frames, each a 50-second exposure at ISO 800, stacked in DeepSkyStacker and processed in Photoshop.
"Stairway to Heaven"A few nights ago I was out gazing the milky way in the early pre-dawn sky. Twas a windy night at Dinosaur Point and i was tired and feeling less-than creative finding myself having difficulty composing. Watching the milky way in transit, i noticed the center hovering over the hills along the horizon reaching straight upward into the infinite sky. it appeared to be a cosmic stairway to heaven. Click and Voila! This shot really came to life in post, after delicate processing, the colors and details of the milky way make the pre-dawn sky bloom with color. Enjoy and thanks for stopping by:-)
This revision softens contrast and color corrects stars.
Imaging telescope or lens: Nikon NIKKOR 180 F2,8 AIS ED
Imaging camera: Nikon d7100
Mount: ORION Sirius EQ-G
Guiding telescope or lens: Nikon NIKKOR 180 F2,8 AIS ED
Software: Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions, PixInsight 1.8 Ripley PixInsight , Photoshop CS 6 Adobe
Resolution: 3992x3448
Dates: Feb. 10, 2016, Feb. 13, 2016, Feb. 28, 2016, March 4, 2016, Nov. 3, 2016, Nov. 6, 2016, Nov. 8, 2016
Frames:
129x75" ISO1000
5x100" ISO1250
11x75" ISO1250
41x60" ISO1600
151x75" ISO1600
23x80" ISO1600
Integration: 7.4 hours
Avg. Moon age: 9.44 days
Avg. Moon phase: 32.46%
Bortle Dark-Sky Scale: 4.00
Temperature: 2.00
Astrometry.net job: 1319036
RA center: 93.598 degrees
DEC center: 22.281 degrees
Pixel scale: 4.441 arcsec/pixel
Orientation: 89.593 degrees
Field radius: 4.107 degrees
Locations: Home observatory, Cheyenne, WY (elevation: 6014'), United States
Just before the Event Horizon Telescope started its imaging run on the supermassive black hole at the center of M87, I was imaging the same region of the sky with my Celestron Edge HD 925. The galaxy in question, M87, is in the lower left corner of this image. It is the closest Brightest Cluster Galaxy (BCG) to us, and it shows a relativistic jet when you take enough data to capture that feature.
The other galaxies that cross the top part of this picture are known as Markarian's Chain -- all of the prominent galaxies in this picture are part of the Virgo Cluster. M87 and the rest of the Virgo Cluster galaxies are about 55 million light years away. At that distance, if there was a civilization looking back at Earth, the image they would currently get is of a planet whose biosphere had just rebounded from the Chicxulub impact. However, any such image is exceedingly unlikely. On the full size scale of this image (1684x2408 pixels), the supermassive black hole would be 16 millionths of a pixel in size. That black hole is roughly 3 million times the diameter of the Earth. Using a radio telescope the size of the Earth, we were just able to resolve the black hole.
This image is a mosaic of 4 separate tiles. Each of those is a stack of 4 minute exposures. Images were shot with an Edge HD 925 at f/2.3 with Hyperstar and an Atik 314L+ color CCD. Preprocessing was done in Nebulosity. The stacking, initial processing, and mosaic composition was done in PixInsight. Final processing was done in PixInsight and PS CS 5.1.
The image center (J2000) is at:
RA 12h 29m 9s
DEC +13° 0' 17"
The image spans 1° 10' by 1° 40'.
There are 14 galaxies with NGC designations, and about 100 galaxies in total visible in the picture.
Taken with a TMB92L, Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 42 120-second light frames and 45 120-second dark frames, all at ISO 800, as well as 32 flat and 50 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop.
Taken with a TMB92L, Canon T3i DSLR, and Celestron CG-4 mount. Consists of 37 light and 29 dark frames, each a 40-second exposure at ISO 800, stacked in DeepSkyStacker and processed in Photoshop.
Another ellipsoidal collection of stars leftover from the formation of the Milky Way Galaxy. Part of why the center appears so dense is that, at over 11 kpc, the center is farther away than the center of our galaxy.
Stack of 24 90s exposures shot with a Celestron Edge HD 925 at f/2.3 with Hyperstar and an Atik 314L+ color CCD. Preprocessing in Nebulosity; stacking and processing in PixInsight; final touches in PS CS 5.1.
Image center (J2000) is at
RA 21h 33m 27s
DEC -0° 49' 30"
Ref: www.skyandtelescope.com/observing/3200-phaethon/
Look just right the center of image to see this 6 km size asteroid move. Estimated magnitude 10.9 and somewhat brighter and faster moving than just two days ago. Nearly overhead at the end of this brief timelapse. 143 minutes lapsed time.
Nikon d7100, Nikkor 180mm f/2.8, iso 3200, @ f/4 and f/5, 30 sec exposure with 4 sec gap between frames. Played back at 40 fps.
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南半球的銀河，跟我們看慣的有不一樣的景致。近中央可以看到很易辨認的南十字座 (Crux) 和煤袋星雲 (Coalsack Nebula)，往右一點比較光的是船底座大星雲 (NGC3372)；相片右下角有大麥哲倫星系 (Large Magellanic Cloud)，右上角一片的紅色是甘姆星雲 (Gum Nebula) 部份。
Photo by Michael Leung @ New Zealand
Canon EOS 650D
Samyang 14mm f/2.8
Taken with a TMB92L, Canon T3i DSLR, and Celestron CG-4 mount. Consists of 41 light and 23 dark frames, each a 35-second exposure at ISO 800, stacked in DeepSkyStacker and processed in Photoshop.
NGC 3718 and its little friend This critter sits near the lower left corner of the bowl of the 'Big Dipper', and is a tough nut to crack.
Last night, I broke through the skin of that nut. :)
35 one-minute exposures @ ISO3200 using a Nikon D5500 and a 10-inch Meade LX200.
Stacked in Deep Sky Stacker and fine-tuned in Adobe Photoshop CS6.
This is a portion of the dust complex just north of Antares, in Scorpius. The blue reflection nebula at the left surrounds the star i Sco. This is a mosaic of 4 panels which consist of stacks of 90 s subframes. My intention is to expand upon this later. Here is the final version.
Subframes taken with a guided Celestron Edge HD 9.25" at f/2.3 with Hyperstar and an Atik 314L+ color CCD. Preprocessing in Nebulosity; processing and mosaic creation in PixInsight; final touches in PS CS 5.1.
Image center is near
RA 16h 26m
DEC -25.3°