Eta Carinae Nebula region shot in Hydrogen Alpha, this was a test series of frames of the new mount, so was never intended to be a finished image.

Distance of object about 6500 - 10'000 light years.

Further info here :

en.wikipedia.org/wiki/Carina_Nebula

Heres an 'older' wider field of View version in colour of the same region flic.kr/p/wNLY6B

Downloaded the trial version of PixInsight the other day (for the third time), and gave it a good going over, as much as I could. Finally came to the conclusion, rightly or wrongly, that there isn't a huge amount in PI that can't be done in PS, with one or two exceptions, one of which is DBE.

I used DBE on this as the gradient had caused problems in my previous iterations, then processed in PS. One other plus from PI was that, having studied a few tutorials, I learnt a bit more about noise reduction, and put that into practice.

This has to be my final version of this - I'm not going to get anything more out of it. I think it beats my previous one :) I saw a version of this the other day, probably better than this, that consisted of less than 3 hours of 5 minute subs - my skies got a verbal lashing that night, I can tell ya! :)

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

16 hours of 4 - 12 minute subs @ ISO 640 - 1600

Guiding: Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in PI and CS5

I had wanted to capture images of this comet when it was at perihelion, but it ended up being cloudy that morning. This was a few days prior.

Val Racine, Québec, Canada - Printemps 2016

My friend and I went near Mont-Mégantic for a wonderful astronomy trip. On our last night, we got up at 2am in the hope of observing the galactic center of the Milky Way (right). It is just beginning to be visible in the spring. Just before sunrise (light blue halo on the left), the clouds left and we were able to capture the entire Milky Way. The yellow halos are caused by light pollution Val Racine (left) and Notre-Dame-des-Bois (right, in the clouds).

---

Mon ami et moi nous sommes rendus près du Mont-Mégantic pour un merveilleux séjour d'astronomie. Je vous le conseil vraiment, le ciel étoilé est une richesse! À notre dernière nuit, nous nous sommes levés à 2h du matin dans l'espoir d'observer le centre galactique de la Voie Lactée (à droite). Il commence à peine à être visible au printemps. Quelle chance nous avons eu! Juste avant le lever du soleil (ciel bleu pâle à gauche), les nuages ont quitté et nous avons pu capturer l'ensemble de la Voie Lactée. Les halos jaunes sont causés par la pollution lumineuse de Val Racine (à gauche) et Notre-Dame-des-Bois (à droite, dans les nuages).

À bientôt,

Fred

This is part of the larger NGC2264 Christmas tree cluster. It is located in the constellation of Monoceros at about 2500 light years away. This interstellar beast is formed of cosmic dust and gas interacting with the energetic light and winds from hot young stars.

Details

Mount: Avalon Linear Fasy reverse

Telescope: AT8RC

Camera: QSI690wsg with 3nm Ha filter

46x1800s totalling 23 hours of data

IC4628 is located in the constellation of Scorpius around 6000 light years from earth.

(this is only a 'portion' of the actual nebula).

Shot from Newport area Sydney Australia.

Exposure Time: 10mins per exposure/shot equalling:

4hrs of Hydrogen Alpha.

Equipment used:

Telescope: William Optics 110Triplet

Mount : Paramount MYT

Camera: Atik One+ OAG

Filters: Astronomik HA 6nm

Software (Capture): The SkyX

Processing : Pixinsight.

The Wishing Well Cluster, formally known as NGC 3532, is a breathtaking open star cluster nestled in the southern constellation of Carina, lying about 1,300 light-years from Earth. With over 400 stars densely packed into its luminous heart, it spans a region roughly 50 light-years across, shimmering like a scattering of silver coins—hence its poetic nickname. The cluster contains a rich mix of hot blue giants and older, cooler stars, and it gleams with such brightness that it is easily visible to the naked eye under the dark Namibian skies.

NGC 3532 lies in a star-forming region of the Milky Way, surrounded by a vibrant complex of emission nebulae and molecular clouds. Among these are the RCW 54b, 54c, and 54d regions—dense knots of glowing hydrogen gas within the larger RCW 54 complex. Each of these nebulae is a cradle of ongoing star formation, rich in ionized gas and dust, energized by the ultraviolet radiation from hot young stars.

RCW 54d is a relatively compact, bright region, (upper Left), appearing like a glowing ember embedded in the interstellar medium. It is likely powered by a small group of O or B-type stars buried within.

RCW 54c extends more diffusely, (left hand side), with wispy filaments and darker dust lanes weaving throughout. The gas flows towards the bottom of the image hinting at complex magnetic fields and turbulent gas dynamics.

RCW 54b, the most nebulous and irregular of the group, (right hand side) is partially obscured by foreground dust but still radiates a soft, ruddy hue. It may be in an earlier or less active phase of stellar birth than its siblings.

Together, the Wishing Well Cluster and the surrounding RCW 54b–d nebulae form a jewel-like tableau in the Carina region, where the galaxy’s spiral arm folds into a corridor rich with gas, dust, and stellar activity. The entire field of view is a tapestry of light and structure, revealing the chaotic beauty of a galaxy alive with stellar creation ...

PlaneWave Delta Rho 350

10 Micron GM2000 HPS

Moravian C5S-100M

The image is a two panel mosaic. Total acquisition time: ca. 16 hrs 46 Minutes

Imaged on September 9th, 2023. A Wide field view showing the NGC 6888, SH2-101, and WR 134. This spring and summer have been challenging, with abundant clouds during prime imaging time and wildfire smoke, which blanketed the night skies. I welcome cooler temps and hopefully clearer skies in October.

OTA: William Optics RedCat 51 II

Main Camera: ZWO ASI2600MC Pro

Mount: ZWO AM5 · ZWO TC40 Carbon fiber tripod

Filter: Antlia ALP-T Dual Band 5nm 2"

Accessories: Astrozap 4" Dew Heater · Pegasus Astro Powerbox Micro · Starizona Filter Drawer 2" · ZWO ASIAIR Mini · ZWO EAF

Software: Adobe Lightroom · Pleiades Astrophoto PixInsight

Guidescope: William Optics UniGuide 50mm

Guide Camera: ZWO ASI220MM Mini

English below

La nebulosa Pellicano (IC 5070) è una regione H II nella costellazione del Cigno. Insieme alla vicina nebulosa Nord America (NGC 7000) forma un interessante complesso con molte regioni di formazione stellare.

Integrazione di quasi 9 ore, pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm, mentre per le stelle 50 pose da 1 minuto con filtro broadband SV260, telescopio newton 150/600 con correttore 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione Pixinsight.

The Pelican Nebula (IC 5070) is an H II region in the constellation Cygnus. Together with the nearby North American Nebula (NGC 7000), it forms an interesting complex with many star-forming regions.

Integration time nearly 9 hours, 10-minute guided exposures with an Antlia ALP-T 5nm dual-band filter, and 50 1-minute exposures with an SV260 broadband filter for the stars. A 150/600 Newtonian telescope with a 0.95x corrector, a Tecnosky Vision 571C camera, an Eq6-R Pro mount, Pixinsight processing.

Taken with a TMB92L, Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 33 130-second light frames and 33 130-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.

IC 1805, surnommée la nébuleuse du Cœur, est une nébuleuse en émission située à environ 6 500 année-lumière dans la constellation de Cassiopée.

Au centre de cette nébuleuse se trouve un amas ouvert, Melotte 15

Newton SkyWatcher 200/1000

Monture EQ6-r pro

ASI 2600 MC pro

Correcteur de coma Baader MPCC Mk III

ZWO OAG + ZWO ASI 290mm mini

ZWO EAF

ASIAIR Pro

Filtre Optolong l-eXtreme 2"

Traitement PixInsight + Photoshop CC

Prise le 13/02/2021 :

110*300" => 9h10'

Gain 100 - Temp -20°C

DOF

The Orion Nebula, also known as M42, is a diffuse nebula located about 1,344 light-years away from Earth in the constellation Orion. It is a well-known stellar nursery, where new stars and planetary systems are forming from collapsing clouds of gas and dust. Spanning about 24 light-years in diameter, it is one of the closest and largest regions of massive star formation visible to us.

At the heart of M42 lies the Trapezium Cluster, a young open cluster of stars. This cluster consists of four main stars arranged in a trapezoid shape within a 1.5 light-year diameter. Two of these stars can be resolved into binaries, bringing the total to six visible stars in the cluster. These stars, along with many others in the nebula, are in the early stages of their evolution. The Trapezium Cluster is part of the larger Orion Nebula cluster, which includes about 2,800 stars spread over 20 light-years.

Near the top of the frame is Sh2-279, the Running Man reflection nebula.

All the surrounding dust and lanes of dark-nebulae are part of the Orion Molecular Cloud complex.

This was a moderately complicated image to make, being an HDR:

300 lights at 1s - for the stars, especially the trapezium cluster in the core

100 frames at 180s for the detail in the dust

20 frames at an intermediate 30s for a smooth blend

TI: 6.25hr

Processed in PixInsight: WBPP, BlurXterminator, ABE, SPCC, NoiseXterminator, HDRComposition, Seti Astro's Statistical Stretch; finished in Affinity (tonemapping, HSL, clarity).

Prints, cards and more: shiny.photo/photo/M42-and-De-Mairan-s-Nebula-905695a23bff...

two frame mosaic ic1848 the'Soul nebula' in cassiopeia

a dslr osc image

scope - ED80

Camera - 350D

mount - EQ6, (guided with finderguider)

Filters - eos clip CLS

left pane; 5x600s right pane; 7x600s with calibration frames

stacked in DSS, stitched in Ps process in Ps.

Eta Carinae (NGC 3372) - The Carina Nebula (7 500 light years from earth). Situated in the Southern Hemisphere constellation Carina (The Keel).

First Light - June 2015 - My first attempt at wide-field, deep sky Astophotography (photographed close to the city lights).

This was my 1st astrophoto, view some of my later images HERE.

Imaged with my new Canon 60Da, that is able to photograph in the Hydrogen Alpha (Hα) Infrared wavelength of light (656.28 nm), which picks up all the Hydrogen gasses and nebulosity of Nebulae (seen in red in this photo).

Telescopes are like time machines, and this is what the Carina Nebula looked like 7 500 years ago (as the light took that long to reach us, travelling at 300 000 km/s).

There were some technicalities with the Guide Scope with my first attempt, so the exposures where shorter than I would have preferred. Luckily all of that is sorted out now for next time.

Gear:

GSO 6" f/4 Imaging Newtonian Telescope (Astrograph).

Celestron Advanced VX Equatorial Mount.

Orion UltraBlock Narrowband Light Pollution Filter.

Canon 60Da DSLR.

Processed in PixInsight.

Polar Aligned, but Unguided.

Stacked 20 sec. exposures (Lights/Subs).

Calibration Frames: Darks and Bias frames (no Flats).

Photographed rather close to the "light polluted" suburbs of the West Rand and North Rand of Johannesburg (Gauteng Province, South Africa). Light Pollution Map.

Astrometry info:

RA, Dec center: 161.295395072, -59.9748363573 degrees

Orientation: 1.13072058041 deg E of N

Pixel scale: 6.62902545394 arcsec/pixel

Field contains: NGC 3372

nova.astrometry.net/user_images/774839#annotated

Martin

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佳節將近，《星野行》在此祝大家聖誕新年快樂。

聖誕樹星團 / 錐狀星雲

近中央三角形分佈的就是聖誕樹星團 (NGC2264)，樹頂位置是倒著的錐狀星星雲，這片美麗的天區是在麒麟座附近，要尋找也不困難。

除此之外圖中還有一些有趣的天體，如緊接聖誕樹左下有點毛毛的是狐狸皮星雲，還有左上像個彎刀的有趣星雲 - 哈勃變光星雲 (NGC2261, Hubble's Variable Nebula)。

Photo by Michael Leung

Date: 5 Nov 2016

Location: 廣東 從化

Camera: ASI 1600MM-C @ -10c

Telescope: Borg 90FL w/0.72x reducer (360mm f/4)

Mount: AZEQ6 Guided ASI120MM-S

Setting: Ha 10min x9, LRGB 3min x8 per channel.

Process: PI, PS CC

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

ASIAIR Pro

51*300" => 4h15'

48*300" => 4h00

Total 8h15'

Traitement PixInsight + Photoshop CC

A reprocess of previous data - NGC2244 / Rosette nebula.

ED80 - ATIK16HR - astronomik ha clip/baader OIII filters. Processed in photoshop - capture/stacking nebulosity.

i really must leave this data alone now :D

The Andromeda Galaxy also known as Messier 31, M31, or NGC 224, is a spiral galaxy approximately 780 kiloparsecs (2.5 million light-years) from Earth. It is the nearest major galaxy to the Milky Way.

Taken with a TMB92L, Canon T3i DSLR, and Celestron CG-4 mount. Consists of 29 40-second light frames and 24 40-second dark frames, 25 5-second light frames and 25 5-second dark frames, all at ISO 800, as well as 11 flat images, stacked in DeepSkyStacker and processed in Photoshop.

This huge ball of stars predates our Sun. Long before mankind evolved, before the dinosaurs roamed and even before the Earth existed, several star globes condensed and orbited a young galaxy, the Way Milky Of the approximately 200 globular clusters that survive today, Omega Centauri is the largest, with some ten million stars. Omega Centauri is also the brightest globular cluster: with an apparent visual magnitude of 3.9 it is visible to the naked eye for southern observers. Cataloged as NGC 5139, Omega Centauri is about 18,000 light years away and is 150 light years across. Unlike many other globular clusters, Omega Centauri stars have different ages and several chemical traces, indicating that this 12-billion-year globular cluster has a complex history.

Captured 12, december, 2018.

Autor: Mario Poblete

In 1771 the French astronomer Charles Messier published a catalogue listing 110 nebulae and star clusters. He did this to help comet hunters discern between fuzzy blobs in the sky that were new comets, or already-discovered deep sky objects. Messier listed each object with the letter “M” (for Messier, of course) and a catalogue number. Unknown to Messier at the time was the fact that some of these “nebulae” were discreet galaxies like our Milky Way, located millions of light-years from us on Earth. My photo brings you three of these Messier objects, M31, M33 and M110. Apart from their dry catalogue names, two of these galaxies have the common names of the “Andromeda Galaxy” (M31) and the “Triangulum Galaxy” (M33).

I captured this photo without the use of a telescope or telephoto lens. I shot nine pictures of the foreground and sky, plus twelve “dark” frames, which were combined in software to reduce the amount of digital noise present. For all of the twenty-one images, I used the same equipment and settings. These were my Canon EOS 6D Mk II camera, a Yongnuo 50mm f/1.4 lens @ f/2.0, using an exposure time of 6.0 seconds @ ISO 12800.

An underrated area of the Gamma Cygni nebula IC 1318 - vdB 134 is a reflection nebula, reflecting the light of ω1 Cygni about 869 ly distant.

Toward the bottom of the frame is planetary nebula PLN 86 + 5 1.

128 * 3min lights OSC data with a Skywatcher 8" Quattro and Neodymium filter, lots of biases, flats and darks processed in APP, PI and Affinity.

English below:

Nella parte più meridionale della costellazione del Cigno si trova il resto di supernova G65.2+5.7 esteso per circa 180 parsec. La sua parte meridionale è nota come Sh2-91: una dedole e bella struttura filamentosa distante da noi circa 2600 anni luce. Nella parte alta, al centro, è presente la piccola nebulosa planetaria PK064+05.1 attorno alla stella HIP96295 che appare molto arrossata.

Somma di pose guidate da 10 minuti per un totale di 16 ore e 50 minuti con filtro dualband Antlia ALP-T 5nm per la nebulosa mentre per le stelle sono una ventina di minuti 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 HSO in Pixinsight.

In the southernmost part of the constellation Cygnus lies the supernova remnant G65.2+5.7, which extends for about 180 parsecs. Its southern portion is known as Sh2-91: a beautiful, intricate filamentary structure about 2,600 light-years away. In the upper center, the small planetary nebula PK064+05.1 orbits the star HIP96295, which appears very red.

A total of 16 hours and 50 minutes of guided exposures were taken using an Antlia ALP-T 5nm dual-band filter for the nebula, while the stars were taken for about twenty minutes of 60-second exposures without filters. 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, Tecnosky Vision 571C camera, Eq6-R Pro mount, and HSO processing in Pixinsight.

SIMPLE = T / file does conform to FITS standard

BITPIX = -32 / number of bits per data pixel

NAXIS = 3 / number of data axes

NAXIS1 = 5025 / length of data axis 1

NAXIS2 = 3272 / length of data axis 2

NAXIS3 = 3 / length of data axis 3

EXTEND = T / FITS dataset may contain extensions

COMMENT FITS (Flexible Image Transport System) format is defined in 'Astronomy

COMMENT and Astrophysics', volume 376, page 359; bibcode: 2001A&A...376..359H

MIPS-FHI= 0.348013 / Upper visualization cutoff

MIPS-FLO= 0 / Lower visualization cutoff

BZERO = 0 / offset data range to that of unsigned short

BSCALE = 1 / default scaling factor

DATE = '2023-07-12T14:14:50' / UTC date that FITS file was created

DATE-OBS= '2023-07-09T20:29:44' / YYYY-MM-DDThh🇲🇲ss observation start, UT

INSTRUME= 'Canon EOS 600D' / instrument name

OBSERVER= ' ' / observer name

TELESCOP= ' 6 inches newtonian lxd75 ' / telescope used to acquire this image

ROWORDER= 'BOTTOM-UP' / Order of the rows in image array

XPIXSZ = 4.29 / X pixel size microns

YPIXSZ = 4.29 / Y pixel size microns

XBINNING= 1 / Camera binning mode

YBINNING= 1 / Camera binning mode

FOCALLEN= 762mm / Camera focal length

CCD-TEMP= 0 / CCD temp in C

EXPTIME = 299 / Exposure time [s]

STACKCNT= 35 / Stack frames

LIVETIME= 10465 / Exposure time after deadtime correction

EXPSTART= 2.46014e+06 / Exposure start time (standard Julian date)

EXPEND = 2.46014e+06 / Exposure end time (standard Julian date)

ISOSPEED= 800 / ISO camera setting

HISTORY mean stacking with winsorized sigma clipping rejection (low=3.000 high=3

HISTORY .000), additive+scaling normalized input, normalized output, no image we

HISTORY ighting, equalized RGB

HISTORY Extraction du gradient (Correction : Subtraction)

HISTORY Neutralisation du fond du ciel

HISTORY Étalonnage des couleurs

HISTORY SCNR (type=neutre moyen, qté=1.00, préserve=true)

HISTORY Réduction de la trame (niveau=1.00)

HISTORY Transformation asinh : (stretch= 80.0, bp=0.00000)

HISTORY Transf. histogramme (mid=0.069, lo=0.120, hi=1.000)

HISTORY Transf. histogramme (mid=0.430, lo=0.038, hi=1.000)

HISTORY Débruitage NL-Bayes (mod=1.000, CC activée)

HISTORY Débruitage NL-Bayes (mod=1.000, VST activé))

END

Es|

La brillante NGC 253 , algunas veces llamada la Galaxia Moneda de Plata o Galaxia del Escultor, es una de las galaxias espirales visibles más brillantes y además una con mayor contenido de polvo.

Por primera vez observada en 1783 por la matemática y astrónoma Caroline Herschel , el universo isla polvoriento yace a sólo a 10 millones de años luz de distancia hacia la constelación austral del Escultor.

De aproximadamente 70.000 años luz de largo, NGC 253 es el miembro más grande del Grupo de Galaxias Escultor , el más cercano a nuestro propio Grupo Local de Galaxias .

En adición a sus franjas de polvo, ramas de polvo parecen estar surgiendo del disco galáctico en esta impresionante vista .

El enorme contenido de polvo acompaña a una activa formación estelar, dándole a NGC 253 la designación de una galaxia con brotes de formación estelar.

Además se sabe que NGC 253 es una intensa fuente de alta energía en rayos-x y rayos gamma, posiblemente debido a los agujeros negros masivos cerca del centro de la galaxia.

Capturada el 12/05/2019

Canon T5i

Celestron Vx 9.25

Autor: Manuel Tobar/ Diego Tapia

Gear used:

Canon 6D, Canon 400mm f5.6 and Skywatcher Star Adventurer

Software used:

Stacked in DeepSkyTracker, processed in PixInSight and Adobe Photoshop CC

60 x 1 min @ ISO 1600 lights

30 flats/darks/bias

My very first session of imaging deep space objects with an equatorial mount. How did i do?

First astrophoto of 2020 for me is of the Orion Molecular Cloud Complex taken in Sigel, PA. Although not the most colorful photo as I was battling light pollution, you can still make out some detail in distance object. Some for example is Barnard's Loop, Betelgeuse, the real bright Sirius, and NGC2024 aka The Flame Nebula.

La nébuleuse de l'Iris (NGC 7023) dans la constellation de Céphée est un bel exemple de nébuleuse par réflexion.

Un vaste nuage de poussière est mis en lumière par la réflexion d'une étoile brillante en son centre.

Prise le 24 26 et 28/05/2020 sur trois nuits

Newton SW 200/1000

EQ6-r pro

Canon 1000D défiltré partiel

28*180" + 295*90" = Total 8h46'

Poses de 180s autoguidées par OAG + T7m (ASI 120mm)

ISO 800

DOF 50-100-20

Traitement Pixinsight + Photoshop CC

Taken with a TMB92L, Hutech-modified Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 42 240-second light frames and 45 240-second dark frames, all at ISO 800, as well as 60 flat and 100 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop.

The Great Nebula in Orion (M42) and the Running Man Nebula (NGC 1977), photographed in Narrowband using the Hubble Palette (HST).

M42 is a diffuse nebula situated in the Milky Way, south of Orion's Belt in the constellation of Orion. It is one of the brightest nebulae, and is visible to the naked eye in the night sky. M42 is located at a distance of 1,344 light-years, and is the closest region of massive star formation to Earth.

Why image in Narrowband?

In short, different elements show up in different colors of the spectra in far more detail. See my link to ''A brief description of the Electromagnetic Spectrum of Light'' for more info.

Why go through all the trouble?

“That's the way to learn the most, that when you are doing something with such enjoyment that you don’t notice that the time passes.” - Albert Einstein.

Narrowband wavelengths of the light spectra in this image:

The Hubble Palette (HST)

Hydrogen-Alpha - 656.3nm

Oxygen-III - 500.7nm

Sulfur-II - 672.4nm

RGB Channel Mapping Ratio:

Red: 40% Ha + 60% SII

Green: 40% OIII + 30% Ha + 30% SII

Blue: 100% OIII

PixInsight PixelMath Formula Expression:

R/K: 0.4*Ha + 0.6*SII

G: 0.4*OIII + 0.3*Ha + 0.3*SII

B: OIII

Processing:

Pre-Processing and Linear workflow in PixInsight. PixelMath and Nebula Structure enhancement via Wavelets. Finished in Photoshop.

"Capturing Data is Science, but Processing it is Art".

Astrometry Info:

Annotated Sky Chart for this image.

RA, Dec center: 83.7624970537, -5.30247840247 degrees

Orientation: 1.2575903817 deg E of N

Pixel scale: 5.79732928062 arcsec/pixel

View this image in World Wide Telescope.

Hubble Palette explanation:

www.astronomymark.com/hubble_palette.htm

Narrowband explanation:

www.swagastro.com/narrowband-information.html

My brief description of the Electromagnetic Spectrum of Light:

www.flickr.com/photos/martin_heigan/22278042895

Martin

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A widefield Bi-Color image of the Rosette Nebula (NGC 2237, also known as Caldwell 49).

The Rosette Nebula is a large spherical H II region located near a giant molecular cloud in the Monoceros region of the Milky Way Galaxy. The open cluster NGC 2244 (Caldwell 50) is closely associated with the Nebula.

The star cluster and nebula are at a distance of 5,000 light-years from Earth, and is roughly 50 light years in diameter. The radiation from the young stars excite the Hydrogen atoms, producing the emission nebula.

About this image:

This is one of the "First Light" DSO targets taken with my WO Star 71 APO Refractor, and is also my first Bi-Color Narrowband image (imaged in the spectral wavelengths of 7nm Hydrogen Alpha (Ha) & 8.5nm Ionized Oxygen (OIII).

Photographed in the rural dark skies of the Waterberg, Limpopo, South Africa (on a very warm Summer's evening).

Gear:

William Optics Star 71mm f/4.9 Imaging APO Refractor.

William Optics 50mm Finder Scope.

Celestron SkySync GPS Accessory.

Orion Mini 50mm Guide Scope.

Orion StarShoot Autoguider.

Celestron AVX Mount.

QHYCCD PoleMaster.

Celestron StarSense.

Canon 60Da DSLR.

Astronomik Clip-In CLS Light Pollution Filter.

Baader H-alpha 7nm Narrowband Filter.

Baader OIII 8.5nm Narrowband Filter.

Tech:

Guiding in Open PHD 2.6.2.

Image acquisition in Sequence Generator Pro.

Lights/Subs:

12 x 500 sec. ISO 3200 Ha FIT Files (Mapped to Red).

12 x 500 sec. ISO 3200 OIII FIT Files (Mapped to Blue).

Synth Green from Ha and OIII mix (Mapped to Green).

15 x 180 sec. ISO 3200 CLS FIT Files (Luminance from RGB).

Calibration Frames:

40 x Bias

25 x Darks

18 x Flats

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Astrometry Info:

nova.astrometry.net/user_images/1342508#annotated

RA, Dec center: 98.0848483205, 5.01338558942 degrees

Orientation: 1.64562481574 deg E of N

Pixel scale: 7.32212325414 arcsec/pixel

Martin

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NGC 2264 a.k.a. Christmas Tree Cluster

…………………………..................................

Before going into details, the catalog number NGC 2264 does not refer to a single deep sky object, but to four, in the attached image only three can be seen, namely:

- Cone Nebula, an emission nebula that can be seen at the top of the image, being easy to find due to the shape of the nebula, the shape that gave it its name.

- The Christmas Tree Cluster, which stretches over the area between Cone Nebula and the bright star in the center.

- Fox Fur Nebula, which can be seen in the lower left, so named because of the apparent texture that this nebula has in that area.

The 4th DSO that completes the list of cosmic objects that belongs to NGC2264 and which is unfortunately missing from the attached image, is a small cluster, called Snowflake ( of course 😊)

As general information, NGC2264 is about 2700 light-years from us, in the constellation Monoceros, and was discovered by William Herschel almost 250 years ago, on December 26, 1785. Being an emission nebula, NGC2264 is formed mainly from cosmic dust and gases, hydrogen being the most common. That blue "cloud" is just a patch of cosmic dust illuminated by the central star, easily visible.

……………………….

Equipment and settings:

Mount: Skywatcher Eq6 R

Telescope: 150/750 Newtonian telescope

Camera: ASI 533MC Pro

Total integration: 9h30’

Stacking in Deep Sky Stacker.

Edit in Pixinsight and Lightroom.

Location: my Bortle 6+ backyard.

The Leo Tripet, about 35 million light years away from us, here on Earth.

Equipment:

Celestron CGEM Mount

Nikon 500mm f/4 P Ai-s @ f/5.6

Sony a7RIII (unmodified)

Altair 60mm Guide scope

GPCAM2 Mono Camera

Acquisition:

Taos, NM: my backyard - Bortle 3

15 x 240" for 60.5 minutes of exposure time.

10 dark frames

20 flats frames

20 bais frames

Guided

Software:

SharpCap

PHD2

DeepSkyStacker

Photoshop

My mount was polar aligned with SharpCap (what an amazing system for aligning). I'm not comfortable using my SCT as my lens yet. My solution is to piggy back my Sony a7RIII and adapted Nikon 500mm f/4 on a ADM dovetail rail on the top of my optical tube. I had to throw away about 5 frames due to satellites passing through or near my targets. This was low on the horizon and when I came out to end my imaging session I found my guidescope not being able to guide and had to delete my last 3 frames becasue the images were not sharp. It was a fun learning experience, looking forward to trying again when this target is higher in the sky.

Elephant Trunk Nebula captured during full moon from Farmoor, Oxford, UK. 21-10-2021.

The Elephant's Trunk Nebula is a concentration of interstellar gas and dust within the much larger ionized gas region IC 1396 located in the constellation Cepheus about 2,400 light years away from Earth. It is commonly called the Elephant's Trunk nebula because of its appearance at visible light wavelengths, where there is a dark patch with a bright, sinuous rim. The bright rim is the surface of the dense cloud that is being illuminated and ionized by a very bright, massive star (HD 206267) that is just to the east of IC 1396A. The entire IC 1396 region is ionized by the massive star, except for dense globules that can protect themselves from the star's harsh ultraviolet rays.

The Elephant's Trunk Nebula is now thought to be a site of star formation, containing several very young (less than 100,000 yr) stars that were discovered in infrared images in 2003. Two older (but still young, a couple of million years, by the standards of stars, which live for billions of years) stars are present in a small, circular cavity in the head of the globule. Winds from these young stars may have emptied the cavity.

The combined action of the light from the massive star ionizing and compressing the rim of the cloud, and the wind from the young stars shifting gas from the center outward lead to very high compression in the Elephant's Trunk Nebula. This pressure has triggered the current generation of protostars.

4hrs 15mins intergration, 10x480-10x420-10x300 L-Exstreme + 5x600 HA.

WO Z61ii - ASI294MCPro - SWNEQ6-R-Pro - Nina - Stellarium - PH2 - DSS - Photoshop.

A quick image of Messier 27, before exam season begins. Taken during nautical twilight since it doesn't properly get dark here in the UK now until August.

Details:

Skywatcher 200PDS

Skywatcher HEQ5 Pro

Canon EOS 700D

59 x 30s ISO800 subframes, stacked in Deep Sky Stacker and processed in IRIS and GIMP.

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七姊妹至加洲星雲一帶

幸運在山上遇上好天氣，共 3 小時曝光也能夠拍攝到比較明顯的雲氣結構，確實有點喜出望外。

相片右邊有大家都很熟悉的七姊妹星團 (M45)，離我們約四百多光年；中央是英仙座分子雲結構，其中有比較年輕的造星區 IC348 和 NGC1333，離我們約六百至八百光年；左邊是加洲星雲 (NGC1499)，因被旁邊的熾熱恆星卷舌三照射電離而發出迷人的紅色，離我們約一千光年。利用 50mm 鏡頭配合 APS-C 相機，剛好將

三者收納到相片之中。

Photo by - Michael Leung

日期：2015/10/17 @ 梅州陰那山

相機：Canon EOS 650D mod.

鏡頭：Nikkor 50mm/1.8 AIS @ f/2.8

追星儀：Kenko Skymemo RS

設定：ISO 800, 240sec x 46 (Darkframe / Bias)

香港拍攝難度：★★★ (五星最難)

建議鏡頭焦距：35 ~ 100mm

適合拍攝月份：9 月 ~ 12 月 (香港)

The Lagoon Nebula (M8) at the bottom, the Trifid Nebula (M20) at the top.

Nikon D5600 with a Nikon AF-P DX VR 70-300mm lens, mounted on a Sky-Watcher Star Adventurer. Thirty 60-second exposures at f/6.3, 270mm, ISO 3200. Shot 7/31/19 at Pinnacles National Park.

Processed in PixInsight and Photoshop. This is the first picture I've gotten all the way through PixInsight.

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南冕座分子雲 Corona Australis Molecular Cloud

多年前看到同好所拍的照片後已被這堆黑黑的東西吸引著。但是南冕座在香港的觀測仰角較低，加上香港的空氣污染，要拍這個天體實在苦惱。

去年到南半球外遊，看著它高掛半空當然不能放過這機會。

南冕座在天蝎座尾部的文東南邊。這片分子雲結構離我們約 500 光年，算是離我們比較近的造星區之一。黑厚的塵埃遮擋了背景的銀河繁星，也藏著年輕新形成的恆星。近中央藍色的是反射星雲 NGC6726, NGC6727, IC4812。旁邊的星團 NGC6723 其實在很遠的背景約三萬光年距離。

Photo by Michael Leung

Location：New Zealand - Lake Tekapo

Date: 2015/04/16

Mount: iOptron ZEQ25 guided QHY5LII Mono

Camera：CentralDS 600D @ -20c

Telescope：Borg 90FL w/0.72x reducer (360mm f/4)

Setting：ISO1600, 240s x17, Dark, Bias

Process: PI, PS CC

This is a re edition of a capture made on 20 of July.

This was one my first captures made with the Canon T6i.

Omega Centauri is a giant! The biggest globular cluster of the milky way.

Setup:

88x60s, ISO 1600

Canon T6i

Long Perng 66/400

iOptron CEM25P

My very first time shooting the Orion Nebula using my new iOptron Skyguider Pro. This was taken in the small town of Benezette, PA at the Elk Viewing Area.

Nébuleuse de l'Iris - NGC7023

A colour take on the California Nebula (NGC1499).

The California Nebula is an emission nebula located in the Northern constellation of Perseus, approx 1300 light years distant.

Taken through Luminance/Red/Green/Blue filters on a monochrome astrocamera. The result is a 4 panel mosaic of 36 minute (9 x 240s) exposures on each filter, and each of four panels. That's around 9.6 hours total exposure (2.4 hours on each panel).

T: William Optics 81GTF.

C: ZWO ASI533MM-Pro.

M: Pegasus NYX-101.

G: OAG & ZWO ASI220MM.

R: Pegasus Falcon V2.

EFW: ZWO Electronic Filter Wheel (2" LRGB only).

EF: Pegasus FocusCube 3.

S: NINA to Capture and APP & Photoshop to process.

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除了M31仙女座星系外，鄰近的M33三角座星系也是不少天文愛好者的拍攝目標。 三角座星系在本星系群中是第三大的星系，比鄰近的仙女座星系和我們的銀河系略小一些，並可能受到仙女座星系(M31)的重力約束，但在宇宙中仍可算是一個大的螺旋星系。

Photo by Timmy Wong

相機：STL11000M

鏡頭：Takahashi FSQ106N

追星儀：Skywatcher NEQ6 (+EQMOD)

設定：L: 900s x 6, R: 900s x 3, G: 900s x 3, B: 900s x 3, Ha: 1800s x 2

Another collaboration with my northern buddy, Dave Williams, who once again kindly provided the Ha, which was used as luminance. I also layered in the M42 I did earlier this year to improve the colour. This again demonstrates just how much the ED80 leaves the 200p in its wake :)

RGB :

SW ED80/EQ5

Nikon D70 modded, Baader Neodymium filter

31 x 240secs iso 800, 30 x 8 secs iso 800 for the core (2 hours 8 minutes)

Guiding (RA only): Quickcam Pro4000/9x50 finderscope, PHD

Stacked in DSS and processed in CS5

Ha (Dave Williams):

10 x 600 secs (I hour 40 minutes)

250mm Hasselblad lens at f4

Moravian G2 8300

5nm filter

This is a two panel mosaic of the remains of a supernova that occured in the constellation Cygnus. The full complex of the Veil Nebula is significantly larger than this, but this could serve as the beginning of a mosaic to get the full web of dust and energized gas.

Each panel is a stack of 5 min exposures with an Edge HD 925 at f/2.3 with Hyperstar and an Atik 314L+ one-shot color CCD camera. Images were preprocessed in Nebulosity, then registered and stacked in PixInsight. PixInsight was also used to assemeble the mosaic and for further processing. Final touches in PS CS 5.1.

This is roughly centered on the star 52 Cygni (bright star at center), whose coordinates are:

RA 20h 45m 39.8s

DEC +30° 43' 11"

North is at the left, and west is at the top.

Taken on 9 June 2013. This is a 2-panel mosaic using Nikon d7000, Nikkor 85mm f/1.4mm lens with AstroTrak drive.

Acquired near Santa Fe, NM @ 6700' elevation.

NGC-7000

So langsam bekomme ich den Dreh raus...

65 Lights

20 Darks

40 Bias

Astro Pixel Processor + PS

First attempt of NGC-7000 Nebula

Veil Nebula in Cygnus, part of the supernova remnant called The Cygnus Loop. Captured through a Ha and OIII filters using my 350D dslr and ED80 :) i bodged the first process trying to stretch too much detail from the data which wasnt really there, much happier with this process, more natural and cleaner looking.

The Veil Nebula is a cloud of heated and ionized gas and dust in the constellation Cygnus. It constitutes the visible portions of the Cygnus Loop, a supernova remnant, many portions of which have acquired their own individual names and catalogue identifiers. The source supernova was a star 20 times more massive than the Sun which exploded between 10,000 and 20,000 years ago. At the time of the explosion, the supernova would have appeared brighter than Venus in the sky, and visible in the daytime. The remnants have since expanded to cover an area of the sky roughly 3 degrees in diameter (about 6 times the diameter, and 36 times the area, of the full Moon). While previous distance estimates have ranged from 1200 to 5800 light-years, a recent determination of 2400 light-years is based on direct astrometric measurements. The Hubble Space Telescope has captured several images of the nebula. The analysis of the emissions from the nebula indicates the presence of oxygen, sulphur, and hydrogen. The Cygnus Loop is also a strong emitter of radio waves and x-rays.

Skywatcher 8" f4 Quattro Reflector

Skywatcher EQ6-R Mount

ZWO ASI533MCC Main Camera

ZWO ASI120 Guide Camera

ASIair Control System

Two panel mosaic over two nights, panel one 3hrs @ 60secs, panel two 4hrs @180secs

Pixinsight & Adobe PS