Horsehead nebula and flame nebula taken with a Canon 600d and a sharpstar 61 edph II. New processing with the new SIRIL version, the 1.2. We can see some little IC nebulae in this one.

Yes, finally. My longest project so far. 6 hours on IC 2944 with a stock DSLR.

Setup:

Long Perng 66/400mm

iOptron CEM25P

Canon SL1

121x180s ISO 800

DARKS, FLATS and BIAS.

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遠眺獵戶

獵戶座是秋冬百看不厭的星座，也蘊藏著不少的深空天體，幾乎每年均會多次拍攝，以測試每次轉變了的器材。今次拍攝遇上了是次冬天最寒冷的天氣，山上溫度曾達到負四度，再加上四五級的大風吹襲，感覺就在零下二十多度的環境中，實在有點吃不消，也只能拍攝廣角深空以對抗寒風。

在嚴寒低溫的環境下，電池的穩定性十分重要，幸好相機及追星儀也用上大容量的外置電池，以應付一整晚的自動拍攝。唯一擔心的是寒風將相機吹倒，所以將腳架的三腳盡量拉開一點，讓她長時間可以陪伴著獵戶。

Photo by siuba

日期：2015/12/18 @ 梅州陰那山

相機：Canon EOS-M mod.

鏡頭：Canon 22mm f/2 STM

追星儀：Vixen Polarie

設定：ISO 1600, 60s x180 (30s x1 地景)

處理：PI, PS CC

香港拍攝難度：★★ (五星最難)

適合鏡頭焦距：35 ~ 100mm

適合拍攝月份：2015/12 ~ 2016/02 (香港)

English below:

Nella porzione di Via Lattea che attraversa la Costellazione della Volpetta si trova questo gruppo di nebulose dove spicca Sh2-88 (anche LBN139): si tratta, per lo più, di regioni h-alfa di forte formazione stellare.

Molto elusive, è stata necessaria un'integrazione di 21 ore con pose guidate da 10 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 Pixinsight.

This group of nebulae, Sh2-88 (also LBN139), is located in the portion of the Milky Way that passes through the constellation Vulpecula. These are mostly Hii regions of intense star formation.

Optically very elusive, a 21-hour integration was required with 10-minute guided exposures using an Antlia ALP-T 5nm dual-band filter for the nebula, while the stars required about twenty minutes of 60-second exposures without filters. A 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, a Tecnosky Vision 571C camera, an Eq6-R Pro mount, and Pixinsight processing.

First narrowband mosaic for me.

M: Pegasus NYX-101

T: WO GTF81 Refractor

C: ZWO ASI533MM-Cooled

G: OAG and PHD2

GC: ZWO ASI120MC

RAW16; FITs

Temp: -10 DegC

Mosaic: 4 x Panels of:

Ha: Gain 100; Exp: 6 x 300s

Oiii: Gain 100; Exp: 6 x 300s

Sii: Gain 100; Exp: 6 x 300s

Frames: 72 Lights; Darks/DarkFlats/Flats

95% Crop

Capture: NINA

Processed: APP [HOS-1]; PS.

Sky: 50% moon, slight breeze, no cloud.

Die Whirlpool-Galaxie (Messier 51 oder NGC 5194) ist eine Spiralgalaxie im Sternbild Jagdhunde.Die Entfernung von unserer Milchstraße beträgt etwa 25 Millionen Lichtjahre.

Aufgenommen am 25.03.2019

Skywatcher Ed Apo 66/400

Sony a6000

Lights 150/30sek

Darks 20

Flats 20

Bias 20

YouTube → Waheed Akhtar

You can connect with me on other social networks →

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Seestar S50. 945 10s exposures. Stacked in Siril, processed using GraXpert, Siril, Gimp, and Cosmic Clarity.

Not my best picture so far. Bad light pollution condition allied with only 2 hours of 60 second frames. But man, I'm satisfied, at least for this year. I tried this same target with my old Nikon D5000 and got frustrated.

I'll definitely try it again next year, since my camera is now properly modified for astrophotography.

Another shot in the Cygnus constellation taken last night.

You can see NGC 6960 and NGC 6979, two supernovae remnants.

The picture is a stack of 65 subs of 180 seconds each taken with my ZWO ASI 585 MC Pro camera on Sharpstar 61 EDPH II (SV220 Dual narrowband fllter)

Gain 252, offset 8 and temperature -10°C.

LXD75 Onstep modified mount.

Capture with Nina and PHD2Guiding.

Processing with Siril (Hoo).

The Veil supernova in Cygnus. Bi colour narrowband. h-alpha/OIII. Reprocessed with added data.

A little happier with the colour and overall processing than the other one.

Same kit. ED80/QHY163M/Optolong ha baader oiii.

Orion a.k.a. Messier 42, the most famous nebula in the night sky in both the northern and southern hemispheres, can be found in the constellation Orion and can be seen (literally) from August to April. Orion can be seen with the naked eye from low light pollution locations, but a simple pair of binoculars is more than enough to be observed in the middle of Orion's Sword.

M42 is about 1300 light-years away from Earth, has an apparent diameter of 12 light-years, and is considered by far one of the most popular targets in astrophotography, along with Andromeda Galaxy.

I took this picture from a Bortle 2-3 location, using "advanced amateur" equipment and is without any doubts my best Orion image so far.

Equipment and settings:

Mount: SW EQ6R

Telescope: SW 72ED

Camera: ASI 533 MC Pro.

Total exposure: 102 min

Stacked with Deep Sky Stacker. Edit in Pixinsight.

Location: Bortle 2/3

Inspired by Erik's recent image, and being bored after being clouded out for what seems like decades, I thought I'd faff about :)

A starless version of my recent collaboration with Dave Williams. I've left IC 431 and 434 in there because they are nebulae after all. I've also left in Alnitak and his buddy as I'm not good enough to take them out :)

I won't submit this to astrometry, as it may struggle :)

Reprocessed version of Heart Nebula

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心臟星雲 (Heart Nebula, IC1805) 在仙后座尾部近英仙座位置，緊接其旁的是靈魂星雲，因為它們相對較亮和大，鄰旁還有容易辨認的雙雙星團，對於新手來說也是十分容易尋找的，是這天區很受歡迎的拍攝目標。

這次做了個星點移除版本，大家可以欣賞一下這個發射星雲和黑暗塵帶的結構，也算是練練手，順道熟習一下遮色片和多通道混合的技巧。

Photo by Michael Leung

Date: Nov 2016

Location: 廣東從化

Camera: ASI 1600MM-C @ -10c

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

Mount: Sky-Watcher AZEQ6 Guided ASI120MM-S

Setting: Ha 10mins x15, RGB 3mins x15 per channel

Process: PI, PS CC

Messier 45 a.k.a Pleiades

….. a.k.a…..

Matariki ( Maori/New Zeeland )

Kozaru/Hoki Hoshi ( Japan )

Thurayya ( Arabic )

Krittika ( Hindu )

Tz’ab ( Maya Indians )

Tayamni Pa ( North America Indians )

…………….

Pleiades (catalog name: Messier 45), is an open cluster located in the constellation of Taurus, at a distance of about 450 light-years from Earth. Due to this "small" distance that separates us and the fact that the Pleiades are visible to the naked eye, this Messier object is known by several names, such as The 7 Sisters, Subaru or Pleione's daughters, and probably another 50 names. If anyone knows other names, please mention it in the "Comments" section.

M45 consists of over 1000 stars, mostly young stars, hence the blue color that is reflected from the dust cloud that surrounds this star cluster. Due to this "gas" the Pleiades are sometimes seen as a reflection nebula, but from an astronomical point of view M45 is classified as a star cluster

In terms of astrophotography, M45 is without any doubt one of the well known/favorite targets, the details of this star cluster starting to appear from a 100-150mm focal length, especially if the imaging session takes place in a location with low light pollution, Bortle 4 or less.

As additional information, experts believe that due to gravitational interactions with its galactic neighborhood , this star cluster will disappear in about 250 million years, so for those who have not yet photographed this Messier object, it should be noted that the time is limited :)

Equipment and settings:

Mount: SW EQ6R

Telescope: SW 72ED + 0.85 field flattener

Camera: ASI 533 MC Pro.

Filter: Baader UV/IR cut

Total exposure: 232 min ( 116 frames x 2 min )

Edit in Pixinsight.

Location: Bortle 3.

English below:

Ho rielaborato questa immagine di Ced51, nella parte settentrionale di Orione, aggiungendo delle riprese in narrowband. Gli scatti sono di questo inverno.

Sono 21 ore di integrazione, scatti guidati singoli da 5 minuti a cui si somma L'H-alfa ricavato da circa 6 ore con pose da 10 minuti con filtro Antlia ALP-T 5nm, Newton GSO 150/600 con correttore 0.95x, camera TecnoSky Vision 571C, montatura Ioptron GEM45, Pixinsight.

I reworked this image of Ced51, in the northern part of Orion, adding narrowband images. The shots were taken this winter.

It takes 21 hours of integration, single 5-minute guided shots, plus the H-alpha obtained from about 6 hours of 10-minute exposures with an Antlia ALP-T 5nm filter, a GSO 150/600 Newtonian with 0.95x corrector, a TecnoSky Vision 571C camera, an Ioptron GEM45 mount, and Pixinsight.

Messier 27 Overview:

M27, commonly referred to as the Dumbbell Nebula, is classified as a planetary nebula. This type of nebula is formed when a star reaches the latter stages of its life cycle and expels its outer layers. It is essential to clarify that the term "planetary nebula" is somewhat misleading, as these nebulae do not have any direct association with planets. The nomenclature derives from their resemblance to planets when observed through early telescopes. M27, also known as NGC 6853, was officially included in the New General Catalogue (NGC) in the late 19th century.

Key characteristics:

Discovery: Messier 27 was the first planetary nebula ever discovered, spotted by French astronomer Charles Messier on July 12th, 1764. Also of note - Messier 27 was the first ever planetary nebula to be discovered. Charles Messier found it on July 12, 1764, and described it as a "nebula".

Location: It's located in the constellation Vulpecula (The Fox) in the Orion Arm of the Milky Way galaxy.

Distance: Estimates vary, but it's roughly 1,360 light-years from Earth.

Shape: It gets its popular name, the Dumbbell Nebula, from its distinctive twin-lobed shape, resembling a dumbbell or hourglass. It's also sometimes called the "Apple Core Nebula".

Size: It spans about 2.8 light-years across, and its apparent size is roughly 8.0 x 5.7 arcminutes. For reference, the full moon is about 30 arcminutes in diameter.

Brightness: With an apparent magnitude of +7.5, M27 is one of the brightest planetary nebulae in the sky, making it a popular target for amateur astronomers.

Visibility: It is easily visible with binoculars and small telescopes, especially during summer and early autumn in the Northern Hemisphere.

Imaging Telescopes:

Celestron EdgeHD 8″

Imaging Cameras:

ZWO ASI183MC Pro

Dates: August 15th, 21st, 23rd, 24th, and 25th 2025 - September 25th, 26th, and 27th 2025

I imaged over 3 nights in June 2024.

The Lagoon Nebula (M8) and the Trifid Nebula (M20) are in the constellation Sagittarius.

Both nebulae are estimated to be about 5,000 light years away from Earth, but the exact distance is uncertain.

The Lagoon Nebula is about 100 light years in diameter, while the Trifid Nebula is about 15 light years in diameter.

Appearance: The Lagoon Nebula is faintly visible to the naked eye in dark skies. The Trifid Nebula is a bright object that amateur astronomers love.

Composition: The Lagoon Nebula is an emission nebula and an Hydrogen-alpha region. The Trifid Nebula combines an open star cluster, an emission nebula, a reflection nebula, and a dark nebula.

Star formation: Both the Lagoon and Trifid Nebulae are stellar nurseries, where new stars are actively forming.

Discovery: The Trifid Nebula was discovered by French astronomer Charles Messier in 1764.

Taken with a TMB92L, Hutech-modified Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 25 360-second light frames and 21 360-second dark frames, all at ISO 800, as well as 35 flat and 50 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop.

Taken with a TMB92L, Hutech-modified Canon T3i DSLR, Orion SSAG autoguider and 50mm guidescope, and Celestron AVX mount. Consists of 24 240-second light frames and 18 240-second dark frames, all at ISO 800, as well as 30 flat and 50 bias frames. Captured with BackyardEOS, stacked in DeepSkyStacker, and processed in Photoshop.

More details here: fotosgrafiabymiguel.wpcomstaging.com/.../2025.../

Classic Spiral Structure: M51 showcases a beautiful face-on spiral structure, featuring graceful, curving arms composed of stars, gas, and dust.

Interaction with Companion Galaxy: A striking aspect of M51 is its interaction with its smaller companion galaxy, NGC 5195. The companion galaxy seems to "tug" on one of M51's arms. This action creates a bridge-like connection of stars and interstellar material between the two galaxies.

Star Formation: The gravitational interaction between the two galaxies significantly impacts star formation. It actively drives the formation observed throughout M51, particularly within its spiral arms. The spiral arms are stellar nurseries, compressing hydrogen gas and giving birth to clusters of new stars. Bright pink star-forming regions (H-II regions) and brilliant blue strands of young star clusters are prominently visible.

Dust Lanes: Dark dust lanes weave through the galaxy's disk, adding to its visual complexity. Infrared observations even reveal unusual spoke-like patterns within these dust lanes, caused by the companion galaxy's gravitational influence.

Central Region: The central core of M51 is circular. It lacks the elongated bar shape seen in some other spiral galaxies, including our own Milky Way. The central region appears to be undergoing a period of enhanced star formation. It is thought to host a black hole, surrounded by a ring of dust.

Size: Approximately 76,900 light-years in diameter, about 88% the size of the Milky Way.

Mass: Estimated at 160 billion solar masses.

Age: Estimated to be around 400 million years old.

Auch wenn es irgend wann nerft...Safety first, bitte nie ohne Filter die Sonne beobachten.

#astrofotografie #astrofotografia #astrophotography #astronomie #astrophysics #milkyway #Sterne #skywatcher #sky #telescope #teleskop #milchstraße #astronomy #astrography #langzeitbelichtung #deepsky #deepskyphotography #deepskyobject #sonnenbeobachtung #solarscoop #sonnenfilter

44x60" subs with Canon eos 600d on 6 inches newtonian and Lxd75 mount. Capture with Nina and PHD 2 GUIDING. Processing with SIRIL and GIMP

Mount: NEQ6 Pro

Guider: Lacerta MGEN Autoguider

Camera: Sony a7s (centralDS)

Filter: LPS D1

Lens: Canon 70-200mm f4L

ISO 800 @ f4

Lights: 12 x 600 secs. & 5 x 300

secs.

Bias: 100

No darks & flats

DSS, PixInsight & Photoshop.

Comet 46P/Wirtanen close to the Pleiades (M45) on 16 December 2018 (imaged from Southern Africa, after a thunder shower and in between clear gaps in partly cloudy conditions).

I kept the exposures a bit shorter than I would have liked, and rather pushed the ISO a bit higher due to the cloud cover that was increasing. Luckily it was clear towards the North for just long enough to take the series of photos required for stacking, and despite the weather, the Astronomical Seeing was actually really excellent after the rain.

The Comet's faint tail was only visible in darker skies with longer exposures. This Comet has a beautiful bright green Coma (or head). The green color is caused by Cyanogen (CN) and diatomic Carbon (C2), which glows in the green part of the Electromagnetic Spectrum of Light when illuminated by the Sun in space.

Geocentric Distance:

0.0775 AU (Astronomical Unit).

30 Lunar distances.

11.5 Million km.

7.1 Million miles.

Gear:

Nikon AF-S NIKKOR 200-500mm f/5.6E ED VR Lens.

Celestron AdvancedVX Telescope Mount.

Optolong L-Pro Clip-In Filter for Nikon.

Nikon D750 DSLR.

Lights/Subs:

46 x 60 sec. ISO 3200 exposures.

Calibration Frames:

30 x Bias

20 x Darks

Astrometry Info:

Center RA, Dec: 58.071, 22.397

Center RA, hms: 03h 52m 17.067s

Center Dec, dms: +22° 23' 47.549"

Size: 8.45 x 5.68 deg

Radius: 5.089 deg

Pixel scale: 19 arcsec/pixel

Orientation: Up is 130 degrees E of N

View an Annotated Sky Chart for this image.

View this image in the WorldWideTelescope.

Processing:

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Carl Sagan on Comets:

youtu.be/1hlONoWw39M

People's reaction to Comets, excerpt from Cosmos S01E04:

Time code: 13:18

"By 1910, Halley's comet returned once more. But this time, astronomers using a new tool, the spectroscope had discovered cyanogen gas in the tail of a comet. Now, cyanogen is a poison. The Earth was to pass through this poisonous tail. The fact that the gas was astonishingly, fabulously thin reassured almost nobody. For example, look at the headlines in the Los Angeles Examiner for May 9, 1910: "Say, Has That Comet 'Cyanogened' You Yet?" "Entire Human Race Due For Free Gaseous Bath. Expect High Jinks." Or take this from the San Francisco Chronicle, May 15, 1910: "Comet Comes And Husband Reforms." "Comet Parties Now Fad In New York." Amazing stuff! In 1910, people were holding comet parties, not so much to celebrate the end of the world as to make merry before it happened. There were entrepreneurs who were hawking comet pills. I think I'm gonna take one for later. And there were those who were selling gas masks to protect against the cyanogen. And comet nuttiness didn't stop in 1910." - Carl Sagan, Cosmos.

This image is part of the Legacy Series.

Flickr Explore:

2018-12-19

Photo usage and Copyright:

Medium-resolution photograph licensed under Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Terms (CC BY-NC-ND 4.0). For High-resolution Royalty Free (RF) licensing, contact me via my site: Contact.

Martin

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English below

NGC6914 è una nebulosa a riflessione nella parte centrale della costellazione del Cigno quindi in una zona molto ricca di idrogeno ionizzato.

Integrazione per 14 ore e 20 minuti, pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm, telescopio newton 150/600 con correttore 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione Pixinsight.

NGC6914 is a reflection nebula in the central part of the constellation Cygnus, therefore in an area very rich in ionized hydrogen.

Integration for 14 hours and 20 minutes, 10-minute guided exposures with an Antlia ALP-T 5nm dual-band filter, 150/600 Newtonian telescope with 0.95x corrector, Tecnosky Vision 571C camera, Eq6-R Pro mount, Pixinsight processing.

M45 The Pléiades. This open cluster is in the Taurus constellation. This picture totals 94 subs of 120 seconds with no filter. 50 darks, 50 flats and 100 biases (sensor temp : -10°C).

Capture with NINA

Processing with SIRIL, Graxpert and Gimp

Caméra : ZWO ASI 585 MC PRO

Telescop : Sharpstar 61 EDPH V2

Mount : Meade LXD 75

Guidecam and guidescope : QHY 5L II C + SVBONY miniguidescope

Fernando de Magallanes and his crew had more than enough time to study the southern skies during their famous trips around the world. As a result, two diffuse objects in the shape of a cloud, not visible to the inhabitants of the northern hemisphere, are now known as Las Nubes de Magallanes.

These clouds of stars are small irregular galaxies, satellites of our great

Milky Way galaxy.

The Large Magellanic Cloud (LMC, by its most common acronym in English), photographed

above, it is only about 180,000 light-years away - the only known galaxy closer is the Sagittarius Dwarf.

Both the LMC and the Small Magellanic Cloud (SMC) are linked to the Milky Way by a stream of cold hydrogen.

Author: Mario Poblete

Imagine that you could ignore all the stars in the sky and see only the nebulae on the milky way.

How would it be?

Well, I captured IC 2944 on March 31st, and removed the stars to put more emphasis on this incredible emission nebula.

The Running Chicken Nebula, which looks more like Jar Jar Binks (I read that in a reply from my Twitter and I loved it!) is an emission nebula very close to Eta Carina, but much more tenuous!

This capture was made between the 30th and the 31st of March, with the moon practically 100% iluminated!

This was only possible due to Optolong's L-Enhance filter.

EXIF:

88x180s, ISO 1600 (4h24 total exposure)

Canon T6i modified

Long Perng 66/400mm Doublet

iOptron CEM25P

Guidance with QHY5L-II and ZWO 60/280

Optolong L-Enhance Clip in

Obs: I know that the removal of the stars is something very controversial, but take it easy. I also prefer the version with the stars, but I posted this one just for fun. 😉

Hi all

Here is an image taken last night in the constellation of Cepheus.

This is the Wizard Nebula, NGC 7380.

The scope is the sharpstar 61 edph II and the camera, a ZWO ASI 585 mc pro, on the Lxd75 mount.

Stacking of 53 images of 180 seconds with Svbony CLS filter.

Acquisition with Nina+phd2

Siril+Graxpert processing

Good Skies

Time: 2019/01/31

Place: York, Western Australia, Australia

Equipment: Canon 6D (mod) +Sigma 135art

Parameter: ISO1600, F2.8, 60s*78

Thanks Explore (#168). Position (#62)

With a nice streak of clear nights, I decided to see if my new Fujifilm X-T5 can improve my deep sky images with its 45 mpix sensor. This cropped image was post processed with PixInsight and Photoshop and it turned out quite acceptable despite taken in a city with a population of 65,000.

Tech Specs: Fujifilm X-T5, Nikkor 180mm f/2.8 @ f/5, iso 1000, exp 578 subs @ 30 sec (4.8 hour integrated time), guide Astrotrac, RAW.

Bortle skies 5.5, transparency 8 to 10, no moon. Elevation 6118 feet.

Click 2x to enlarge.

Picture of the day x 5

English below

La Nebulosa Pacman (NGC 281) si trova nella costellazione di Cassiopea, a circa 10.000 anni luce da noi.

Questa nebulosa ad emissione è una regione di formazione stellare, dove nubi di gas e polveri vengono illuminate dalla radiazione delle giovani stelle al loro interno.

Sono state realizzate 37 esposizioni da 10 minuti per ciascun filtro, utilizzando sia il dualband Antlia ALP-T 5 nm sia il nuovo Optolong L-Synergy che mi hanno permesso di elaborare in Hubble Palette SHO.

Per catturare le stelle è stata aggiunta circa un’ora di integrazione in pose da 60 secondi con filtro broadband SV260.

Il tutto è stato ripreso con un telescopio Newton 150/600 dotato di correttore Tecnosky 0.95x, camera Tecnosky Vision 571C e montatura EQ6-R Pro, elaborazione in PixInsight.

The Pacman Nebula (NGC 281) is located in the constellation Cassiopeia, about 10,000 light-years away.

This emission nebula is a star-forming region, where clouds of gas and dust are illuminated by the radiation of young stars within them.

I took 37 10-minute exposures for each filter, using both the Antlia ALP-T 5 nm dual-band filter and the new Optolong L-Synergy, which allowed me to process the image in Hubble Palette SHO.

To capture the stars, about an hour of integration was added in 60-second exposures with the SV260 broadband filter.

The entire image was captured with a 150/600 Newtonian telescope equipped with a Tecnosky 0.95x corrector, a Tecnosky Vision 571C camera, and an EQ6-R Pro mount, and processed in PixInsight.

Comet Leonard a.k.a. C/2021 A1

...........................................................

This comet was discovered abt 4 years ago, on January 3, 2021, by astronomer Greg Leonard. As general information, Comet Leonard has a core of 1km in diameter and travels at a speed of about 250,000 km / h (70 km / sec). On December 12, 2022, it reached the closest point to Earth, at just over 30 million km, and on December 17, 2022 it passed about 4 million km from Venus.

I took this image using a small telescope, when Comet Leonard was crossing the constellation Canis Venatici and it was near star cluster Messier 3.

……………………………………………

Equipment and settings:

Mount: SW EQ6R

Telescope: SW 72ED

Camera: ASI 533 MC Pro

Total exposure: 90 min

Location: my Bortle 6+ backyard

Júpiter y el Río lechoso.

En el centro de esta imagen se puede apreciar una “estrella” brillante de color blanco, resulta ser el planeta gigante gaseoso Júpiter, ubicada actualmente en la constelación de Ofiuco. A la izquierda lo acompaña la Via láctea, se le llamo así ya que al ojo desnudo se aprecia como una mancha blanca que atraviesa el cielo nocturno ya que nuestros ojos no tienen la capacidad de ver los colores de estas estructuras que están a miles de años luz, por eso, a través de la cámara se pueden desfigurar los colores reales de estas estructuras. El color amarillo-anaranjado son cientos de miles de estrellas viejas ubicadas hacia el centro galáctico, las nebulosas negras son nubes densas que se encuentran entre nosotros y el centro galáctico, al ser tan densas bloquean la luz que se encuentra detrás de estas nubes, los colores rojizos y rosados son principalmente regiones de formación estelar, regiones Hll, donde las estrellas masivas y brillantes ionizan el gas circundante haciéndolas brillar de estos colores.

Imagen capturada el 12/05/2019.

Exif:

📷: Sony A77

Sigma 10-20 F3.5

20mm, F4, Iso 800

21 frames x 122s

Apilada por Sequator

Procesada con adobe Lightroom y Photoshop.

Autor: Diego Tapia

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

A Hydrogen-Alpha + Oxygen III + Sulphur II Narrowband widefield image of the Cygnus Wall. The North America Nebula (NGC 7000 or Caldwell 20) is an emission nebula in the constellation Cygnus, close to the star Deneb. The remarkable shape of the nebula resembles that of the continent of North America, complete with a prominent Gulf of Mexico.

The Cygnus Wall:

The Cygnus Wall is a term for the "Mexico and Central America part" of the North America Nebula. The Cygnus Wall has the most concentrated star formation in the nebula. The North America Nebula and the nearby Pelican Nebula, (IC 5070) are in fact parts of the same interstellar cloud of ionized hydrogen (H II region). The nebula complex is estimated to be about 1,800 light-years from Earth.

Gear:

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

William Optics 50mm Finder Scope.

Celestron SkySync GPS Accessory.

Orion Mini 50mm Guide Scope.

Orion StarShoot Autoguider.

Celestron AVX Mount.

QHYCCD PoleMaster.

Celestron StarSense.

QHYCFW2-M-US Filterwheel (7 position x 36mm).

QHY163M Cooled CMOS Monochrome Astronomy Camera.

Tech:

Guiding in Open PHD 2.6.3.

Image acquisition in Sequence Generator Pro.

Lights/Subs:

2 Stage Cooled CMOS

Imaged at -25°C

Gain: 20

Offset: 80

Narrowband:

S = 12 x 600 sec. 16bit FITS.

H = 12 x 600 sec. 16bit FITS.

O = 12 x 600 sec. 16bit FITS.

Calibration Frames:

50 x Bias/Offset.

25 x Darks.

20 x Flats & Dark Flats.

PixelMath RGB Channel Combination:

PixInsight Expression:

R = SII

G = (Ha*OIII)*1.5

B = OIII

Image Acquisition:

Sequence Generator Pro with the Mosaic and Framing Wizard.

Plate Solving:

Astrometry.net ANSVR Solver via SGP.

Processing:

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Photographed in the following wavelengths of light:

Optolong SHO Narrowband filters:

OIII line 500.7nm (6.5nm bandwidth)

H-Alpha line 656nm (7nm bandwidth)

SII line 672nm (6.5nm bandwidth)

Astrometry Info:

View the Annotated Sky Chart for this image.

Center RA, Dec: 314.764, 44.279

Center RA, hms: 20h 59m 03.425s

Center Dec, dms: +44° 16' 43.955"

Size: 2.27 x 1.55 deg

Radius: 1.375 deg

Pixel scale: 5.11 arcsec/pixel

Orientation: Up is 97.9 degrees E of N

View this image in the World Wide Telescope.

Martin

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SH2-308: The Dolphin-head Nebula, also designated as Sharpless 308, RCW 11, or LBN 1052, is an H II region located near the center of the constellation Canis Major, composed of ionised hydrogen. It is about 8 degrees south of Sirius, the brightest star in the night

Location: Chile

Telescope: CHI-4, 50 cm F3.6 Reflector

Filters: O-III

3 light frames stacked in Deep Sky Stacker for 30 min exposure.

Processed in Photoshop.

Data Acquired: Telescope live

A cropped Bi-Color processing test of Pickering's Triangle (or Pickering's Triangular Wisp) in the Veil Nebula (a Supernova Remnant).

NGC 6974 and NGC 6979 are luminous knots in a fainter patch of nebulosity on the northern rim between NGC 6992 and Pickering's Triangle.

Ha & OIII Bi-Color:

Photographed in the Hydrogen-Alpha and Oxygen III spectral wavelengths of light (Ha mapped to Red, OIII mapped to Blue, SynthGreen).

Narrowband filters:

H-Alpha

OIII

Processing:

Pre-Processing and Linear workflow in PixInsight, and finished in Photoshop (experimenting with Wavelets, Photoshop Actions and new bi-color processing techniques).

Astrometry Info:

nova.astrometry.net/user_images/1381741#annotated

RA, Dec center: 312.019287471, 31.6310735368 degrees

Orientation: 0.443881002562 deg E of N

Pixel scale: 2.4980010893 arcsec/pixel

Martin

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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...

English below

Alla mia foto della Nebulosa Pellicano IC5070 ho aggiunto 7 ore di integrazione con il nuovo filtro Optlong L-Synergy per un totale di 16 ore e 50 minuti di esposizione per ottenere un'elaborazione in Hubble palette SHO.

Pose guidate da 10 minuti, quasi 9 ore con filtro dualband Antlia ALP-T 5nm, 7 ore con Optlong L-Synergy 7nm, 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.

To my photo of the Pelican Nebula IC5070, I added 7 hours of integration with the new Optlong L-Synergy filter for a total of 16 hours and 50 minutes of exposure to obtain a Hubble SHO palette processing.

10-minute guided exposures, almost 9 hours with the Antlia ALP-T 5nm dual-band filter, 7 hours with the Optlong L-Synergy 7nm, while for the stars, 50 1-minute exposures with the SV260 broadband filter, a 150/600 Newtonian telescope with 0.95x corrector, a Tecnosky Vision 571C camera, an Eq6-R Pro mount, and Pixinsight processing.

The Gecko Nebula, officially cataloged as LBN 437, is a reflection nebula located within the constellation Lacerta (appropriately meaning "the Lizard") that resembles a gecko crawling across the sky. The nebula is illuminated by nearby young stars, reflecting light in delicate, bluish shades.

It is situated near the much larger Sh2-126 emission nebula, which is visually marked by striking red hydrogen-alpha filaments that overlap and create a striking contrast with LBN 437.

This nebula is a popular target for astrophotographers due to its complex structure, which includes both dark molecular clouds (beige-brown here) and reflection regions that are illuminated by interstellar light, offering unique textures and colors.

A total integration of 202 * 180s = 10.1 hours with the Neodymium filter and an OSC camera to capture both the reflection and extra Ha simultaneously; processing in PixInsight included extracting a synthetic Ha layer, boosting the contrast and re-blending together in a HaRGB palette.

Prints, cards and more are available via the website: shiny.photo/photo/LBN-437--The-Gecko--Lacerta-447f51b975e...

This is a re-processing of my data acquired in summer. The picture shows Lagoon and Trifid nebulae (M8 and M20) in Sagittarius.

Every time I study something new in post processing, I try to revisit my old projects and try to improve them. This time it is a new star reduction script which works great for widefield shots like this.

A galaxy no less :)

NGC 2903 is a barred spiral galaxy about 30 million light-years away in the constellation Leo, discovered by William Herschel. And it's a faint bugger, or at least the outer bits are - too faint for my pathetic skies really.

This is the first image I've done using dithering. Not sure how much difference it made as I wasn't able to give it enough subs anyway. Certainly increased the session time, that's for sure! I'll reserve judgement on dithering :)

SW ED80/EQ5

Canon 500D modded, Baader Neodymium filter

3 hrs 15 mins of 180 sec subs, iso 1600

Acquisition: APT

Guiding: Quickcam Pro4000/9x50 finderscope, PHD/EQMOD/AstroEQ

Stacked in DSS (3 x drizzle) and processed in CS5.

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春季必拍星系

春天是一個適合拍攝星系的季節，而 M81 和 M82 是熱門拍攝目標之一。除了星系本身其獨特的吸引力外，視場中其實彌漫著塵埃，這些塵埃需要累積更多光子才能顯現出來。此相片只用上年代久遠的 350D (800 萬像素) 拍攝，細緻度確實還是差了一點，雜訊亦十分可怕，唯有在後制上花一點功夫...

Photo by Timmy Wong

Location：Xingming Observatory

Camera：Canon 350D mod.

Telescope：Tamron 300/2.8 mod.

Mount：Vixen GPD (+SS2K)

Exposure：240s x 132

香港拍攝難度：★★ (五星最高)

建議鏡頭焦距：400mm+

適合拍攝月份：1 月 ~ 5 月 (香港)

大概方向：北斗七星附近

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.

M16 aka The Eagle Nebula located in the central region of the Milky way. It is made of diffuse emission nebula, the region is about 7500 Light-years from our place and is very active in star formation. I took it during my April 2019 visit to Namibia. The region is also famous because of its central region names "Pillars of Creation" when was taken by the Hubble telescope.

In the editing part I used only the RGB photos and for the Luminance part I used the Red channel to point the details, All the RGB channels taken in BIN1.

So it is RRGB photo :)

Photo info:

Red as Luminance BIN1: 3x5min = 15min

RGB BIN1: 3x5Min for each channel for color.

Total RGB - 45Min

Equipment used:

Telescope: ASA 12'' F3.6

Mount: DDM 85 Unguided

Camera: FLI 16200 Mono

Filters: Astrodon

Thanks for watching

Haim Huli

NGC 891 est une galaxie spirale vue par la tranche dans la constellation d'Andromède. Elle a été découverte par William Herschel en 1784.

Autour on distingue de nombreuses petites galaxies, dont les NGC 906, 909, 910, 911, 912, 913... rassemblées dans un amas (Abell 347)

Photo prise le 13/09/2020

77*300s : 6h25'

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

PixInsight + Photoshop CC

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小鏡星系拍攝大作戰

年春初基本上是星系拍攝季節，沒有長焦鏡頭 (實際 300mm 以下對於天文攝影來說仍是廣角) 確實會失去拍攝動力，每張相片也只有丁點大小的深空天體，再多的曝光時間也沒有高的分辨率。是次旅程可以拍攝的目標不多，今次就以新的組合嘗試拍攝 M81 及 M82 星系。幸好高山環境加上高透明天的天氣令拍攝過程順利，只是拍攝時間不足。星空除了星系、星雲等外，在漆黑的背景實際也彌漫著不少暗星雲或暗塵，正式學名是 Integrated Flux Nebula (IFN)。IFN 星際雲的一種，其高密度可能會遮蔽發射星雲或反射星雲的光，如馬頭星雲。IFN 看似是一堆灰塵，不知道的還以為會是天空有雲層走過。

以往單反相機單張拍攝看不見的 IFN 也借助了 Sony A7S 的高 ISO 拍攝能力可以約略見到，需要較長的總曝光時間並經過疊合後才稍為清楚看見。實際上 IFN 在星空上十分常見，只是亮度問題，較為容易見到的是 M45 昂宿星團。不過 IFN 拍攝是地方先決的，希望今年天氣容許有更多拍攝。

Photo by siuba

Location: Yinna, China

Date：2016/03/02

Camera: Sony A7S

Telescope：Takahashi FS-60CB w/ Reducer (264mm f/4.2)

Tracker：Skymemo RS

Setting: 300s x 58

Process：Photoshop CC, PI

香港拍攝難度：★★ (五星最高)

建議鏡頭焦距：400mm+

適合拍攝月份：1 月 ~ 5 月 (香港)

大概方向：北斗七星附近