This one was hard. Over 4 hours of exposure and even than it wasn't enough. But I'm not complaining! First time with open skies for months in a roll.

I've used subs captured over 3 nights.

I don't know, maybe I over processed. Give me your thoughs.

276x60s, ISO 1600

Long Perng 66/400mm

iOptron CEM25P

Canon T6i / 750D modified

Bubble nebula in h-alpha and OIII,

ED80, ATK16HR, astronomik ha, baader Oiii,

DSLR-Ha/OIII

English below

Un ritaglio di M16 in HOO per evidenziare i Pilastri della Creazione

A cutout of M16 in HOO to highlight the Pillars of Creation

English below

La nebulosa Bozzolo si trova nella costellazione del Cigno, è un insieme di nebulose brillanti ed oscure.

16 ore in pose da 10 minuti con filtro broadband SV260 e quasi 10 ore in pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm. Telescopio newton 150/600 con correttore Tecnosky 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione in Pixinsight.

The Cocoon Nebula is located in the constellation Cygnus and is a collection of bright and dark nebulae.

16 hours in 10-minute exposures with a SV260 broadband filter and almost 10 hours in 10-minute guided exposures with an Antlia ALP-T 5nm dual-band filter. 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, Tecnosky Vision 571C camera, EQ6-R Pro mount, and Pixinsight processing.

English below

WR134 è una stella di Wolf-Rayet a circa 5700 anni luce al centro della costellazione del Cigno.

Ho integrato per poco più di 20 ore, pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm per la nebulosa mentre per le stelle un'ora di pose da 60 secondi senza filtri. Telescopio newton 150/600 con correttore 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione Pixinsight.

WR134 is a Wolf-Rayet star located about 5,700 light-years away in the center of the constellation Cygnus.

I integrated the nebula for just over 20 hours, using 10-minute guided exposures with an Antlia ALP-T 5nm dual-band filter, and the stars for an hour of 60-second exposures without filters. I used a 150/600 Newtonian telescope with a 0.95x corrector, a Tecnosky Vision 571C camera, an EQ6-R Pro mount, and Pixinsight processing.

No praise is too high for the Great Orion Nebula, one of the grandest beauties of the winter night sky. The beautiful luminous gas cloud region, the Orion Nebula where stars are born, lies at the bottom right in this picture and immediately next to it lies a bluish region of clouds known by the name Running Man nebula. The Horsehead Nebula lies on the top left corner.

Captured from Badlands National Park.

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In EXPLORE on December 11, 2015

Famous deep space object in Orion constellation. This is a HaRGB image with total exposure of 2 hours.

Finally some good weather here. Almost 3 hours with a stock DSLR. :)

Setup:

Telescope: Long Perng S400M-C 66mm /400mm

Camera: Nikon D5000

Mount: iOptron CEM25P

85x120s ISO 400

When the weather is not playing along, it is fun to fiddle with old data and experiment with different processing techniques.

Here is a starless version of Pickering's Triangle (NGC 6979), also called Pickering's Triangular Wisp in the Veil Nebula (a filamentary Supernova Remnant).

The Veil nebula was born out of the death explosion of a massive star, and the expanding shockwave is situated 1,500 light-years away.

Hα & OIII Narrowband:

Baader H-alpha 7nm Narrowband Filter.

Baader OIII 8.5nm Narrowband Filter.

Processing:

Pre-Processing and Linear workflow in PixInsight, Starnet++ used for star removal and finished in Photoshop.

Original data captured in 2016, as a test with my APO Refracting Telescope and TeleVue Powermate (HOO Palette).

Astrometry info from the original image:

Center RA, Dec: 312.019, 31.631

Center RA, hms: 20h 48m 04.629s

Center Dec, dms: +31° 37' 51.865"

Size: 42.6 x 31.9 arcmin

Radius: 0.444 deg

Pixel scale: 2.5 arcsec/pixel

Orientation: Up is 267 degrees E of N

Flickr Explore:

2020-11-01

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) Licenscing, Contact.

Martin

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A more subtle Hubble Palette channel mix ratio of the spectral wavelengths of light, to highlight the different elements in this interesting Deep Sky Object.

Also see the previous version, which was proceeded to more clearly highlight the elements of Hydrogen and Sulfur at the red end of the Spectrum, and the doubly ionized Oxygen at the blue end of the Electromagnetic Spectrum of Light. Rosette Nebula in Narrowband.

About this image:

A Hydrogen-Alpha + Sulfur-II + Oxygen-III Narrowband image of the Rosette Nebula (also known as NGC 2237 or Caldwell 49).

The Rosette Nebula is a large, spherical H II region located near one end of 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 nebulosity, as the stars formed from the nebula's matter.

The cluster and nebula are at a distance of 5,000 light-years from Earth and measure roughly 50 light-years in diameter. The radiation from the young stars excite the atoms in the nebula, causing it to emit radiation (producing the emission of the nebula at specific spectral lines that we can image).

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

Gear:

GSO 6" f/4 Imaging Newtonian Reflector Telescope.

Baader Mark-III MPCC Coma Corrector.

Celestron SkySync GPS Accessory.

Orion Mini 50mm Guide Scope.

Orion StarShoot Autoguider.

Celestron AVX Mount.

QHYCCD PoleMaster.

Celestron StarSense.

Canon 60Da DSLR.

Aurora Flatfield Panel.

Baader Planetarium 7nm Ha Narrowband filter.

Baader Planetarium 8nm SII Narrowband filter.

Baader Planetarium 8.5nm OIII Narrowband filter.

Tech:

Guiding in Open PHD 2.6.2.

Image acquisition in Sequence Generator Pro.

Pre-Processing and Linear workflow in PixInsight.

PixelMath RGB channel mixing and combinations.

Finished in Photoshop.

Astrometry Info:

View an Annotated Sky Chart of this image.

Center RA, Dec: 97.959, 4.991

Center RA, hms: 06h 31m 50.111s

Center Dec, dms: +04° 59' 26.502"

Size: 1.44 x 1.13 deg

Radius: 0.917 deg

Pixel scale: 3.24 arcsec/pixel

Orientation: Up is -180 degrees E of N

View this image in the World Wide Telescope.

Flickr Explore:

Explore-2017-02-13

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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My first mosaic of a DSO. Why not to start with one of the easiests objects on the southern sky? :)

EXIF:

4 panels of 12x300s with L-Enhance and Canon 750d astromod

Telescope: Long Perng S400M-C 66mm f/6

EDIT: Sorry for the large wattermark, but recently I had some issues with copyright. I hope you understand. Any questions, just ask.

A bi-color Narrowband image of NGC 6188, an emission nebula located about 4,000 light-years away in the Southern Constellation of Ara.

About this image:

This image is the result of photographing at several occasions and different locations during the past year (from proper Dark Sky Sites to my Pier at home). Deep Sky Objects like this is a nice challenge, as it pushes the limits of my modest Telescope gear (especially my mount). It is very rewarding when you have to work hard for an image, and it turned into an ongoing project.

Technical Info:

64 x 600 sec. 7nm Hydrogen-Alpha (Ha).

64 x 600 sec. 6.5nm Doubly Ionized Oxygen (OIII).

William Optics APO Refractor Telescope.

Sensor cooled to -25°C on my QHY163M.

Integration time just under 22 hours.

Calibration frames: Bias, Darks and Flats.

Astrometry.net ANSVR Solver via SGP.

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

Astrometry info:

Center RA, Dec: 249.643, -48.270

Center RA, hms: 16h 38m 34.224s

Center Dec, dms: -48° 16' 12.036"

Size: 1.59 x 1.22 deg

Radius: 1.003 deg

Pixel scale: 3.57 arcsec/pixel

Orientation: Up is 262 degrees E of N

View an Annotated Sky Chart for this image.

View this image in the WorldWideTelescope.

This image is part of the Legacy Series.

Flickr Explore:

2018-09-09

APOD GrAG:

apod.grag.org/2019/06/03/fighting-dragons-nebula

Download mh_Astro_Tools Suite:

anti-matter-3d.com/tools

(or from GitHub)

GitHub Release Page

Also see:

Astro_Weather_Widget

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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My October project involved capturing data from my backyard.

NGC 7380 is an open star cluster in the Wizard Nebula, about 7,000 light-years away in the constellation Cepheus.

Discovered by Caroline Herschel in 1787, its wizard-like shape is shaped by the stellar winds and radiation from hot young stars. A notable feature is the binary system DH Cephei, which contains two massive O-type stars.

Project notes: Imaged over four nights in October 2025 using Celestron EdgeHD scopes (8" and 9.25").

Selecting the right color palette for my celestial object was an enjoyable challenge. I used the Hubble false-color mapping technique, assigning colors to wavelengths of light from elements such as hydrogen (H-alpha), sulfur (SII), and oxygen (OIII).

This method utilizes narrowband filters to create separate monochrome images, which are then colorized to highlight features invisible to the human eye.

After some trial and error, I created a version of the Hubble palette. While not perfectly accurate, it was a fun learning experience, and I plan to revisit this project with a different color palette in the future.

Optics: Celestron EdgeHD 8" & 9.25"

Camera: ZWO ASI2600MC Pro

Mounts: ZWO AM5N + iOptron Tri-Pier & ZWO TC40 Carbon fiber tripod

Filters: Altair SII+OIII ULTRA, Antlia ALP-T HA/OIII, Antlia ALP-T 5nm SII/Hb, Askar ColorMagic G1.

Light frames: 347 x 600 seconds of exposure.

Total integration time: 57 hours 50 mins.

The Wizard Nebula (NGC7380), approx. 8,500 light years distant within our Milky Way and in the constellation Cepheus.

This image was result of stacking 35 5 minute exposures, for a total of 2 hours 55 minutes. Using dual narrow band Ha - OIII filter.

The Great Nebula in Orion (M42) and the Running Man Nebula (NGC 1977).

The Orion Nebula (Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way Galaxy, south of Orion's Belt in the constellation of Orion. M42 is located 1344 light-years away, and is the closest region of massive star formation to Earth. The M42 nebula is estimated to be 24 light-years across. It has a mass of about 2000 times the mass of the Sun.

About this image:

This is really a "work in progress" test image, and is compiled from a combination of "One Shot Color" (OSC) DSLR RGB image data, and Hydrogen-Alpha (Ha), Oxygen III (OIII), and Sulphur II (SII) Narrowband image data (collected at several Star Parties and Astronomy weekends in the past year).

Even though the Orion Nebula is probably the first Deep Sky Object that every Astrophotographer images, it is actually a tricky nebula to photograph and process due to its wide high dynamic range of bright and faint nebulosity.

Narrowband spectral wavelengths of the light in this image:

Hydrogen-Alpha - 656.3nm

Oxygen-III - 500.7nm

Sulfur-II - 672.4nm

Visible light spectrum:

400nm - 700nm

Pre-Processing and Linear workflow in PixInsight

and FITS Liberator, and finished in Photoshop.

Astrometry Info:

Annotated Sky Chart for this image.

Center RA, Dec: 83.756, -5.378

Center RA, hms: 05h 35m 01.327s

Center Dec, dms: -05° 22' 42.324"

Size: 1.7 x 1.26 deg

Radius: 1.059 deg

Pixel scale: 3.83 arcsec/pixel

Orientation: Up is 81.6 degrees E of N

View this image in the World Wide Telescope.

Flickr Explore:

Explore-2017-01-13

Martin

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English below

La Nebulosa Crescent si trova nel cuore della costellazione estiva del Cigno, è letteralmente immersa in un "mare" di idrogeno ionizzato in cui sembra galleggiare. Si trova a circa 5000 anni luce dalla Terra ed è formata dalla stella di Wolf-Rayet WR136. Vicino a lei (verso l'angolo in basso a sinistra) si trova la elusiva nebulosa planetaria Ju 1 scoprta dall'astrofilo Dave Jurasevich nel 2007.

Integrazione per oltre 18 ore, pose guidate da 10 minuti con filtro dualband Antlia ALP-T 5nm, mentre per le stelle 52 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 Crescent Nebula is located in the heart of the summer constellation Cygnus, literally immersed in a "sea" of ionized hydrogen in which it appears to float. It is located approximately 5,000 light-years from Earth and is formed by the Wolf-Rayet star WR136. Near it (toward the lower left corner) is the elusive planetary nebula Ju 1, discovered by amateur astronomer Dave Jurasevich in 2007.

Integration over 18 hours, 10-minute guided exposures with an Antlia ALP-T 5nm dual-band filter, and 52 1-minute exposures for the stars with an SV260 broadband filter, 150/600 Newtonian telescope with 0.95x corrector, Tecnosky Vision 571C camera, EQ6-R Pro mount, and Pixinsight processing.

A cropped Bi-Color processing test of the Wizard Nebula (Sharpless Sh2-142). It is a reasonably large nebula located in the constellation of Cepheus, about 7,200 light-years from Earth.

The Wizard nebula surrounds a developing open star cluster catalogued as NGC 7380. The active star forming region spans 100 about light-years, making it appear larger than the angular extent of the Moon.

The Wizard Nebua is always very low on the horizon at my latitude in the Southern Hemisphere. Imaging Deep Sky Objects that are low on the horizon is a challenge due to "atmospheric seeing", dust and light pollution that is in greater abundance.

Imaged in Narrowband:

Hydrogen-Alpha (656.3nm)

Oxygen-III (500.7nm)

Pre-Processing and Linear workflow in PixInsight,

and finished in Photoshop.

My philosophy when it comes to processing Narrowband images in different wavelengths of the light spectrum:

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

Astrometry Info:

RA, Dec center: 341.832842805, 58.0442012636 degrees

Orientation: 0.331857092543 deg E of N

Pixel scale: 2.36074357005 arcsec/pixel

View this image in World Wide Telescope.

Martin

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English below

Già percettibile ad occhio nudo come una debole macchia lattiginosa, la Grande Nebulosa di Orione è probabilmente uno degli oggetti del cielo notturno più iconici e più fotografati. Per quanto non possa considerarsi una novità, una foto di questa nube di gas emoziona sempre per la sua ricchezza e la sua bellezza.

Mosaico di due pannelli con una combinazione di pose guidate da 30 e 300 secondi l'una per un totale di circa 6 ore per pannello con filtro broadband SV260 a cui ho aggiunto circa 3 ore per pannello di segnale ricavato da pose di 600 secondi con filtro dualband Antlia ALP-T 5nm per enfatizzare l'idrogeno ionizzato. Telescopio newton 150/600 con correttore Tecnosky 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione in Pixinsight.

Already visible to the naked eye as a faint milky patch, the Great Orion Nebula is probably one of the most iconic and photographed objects in the night sky. While it's hardly new, a photograph of this gas cloud is always breathtaking for its richness and beauty.

A mosaic of two panels, combining guided exposures of 30 and 300 seconds each, for a total of about 6 hours per panel with an SV260 broadband filter. I added about 3 hours per panel of a signal obtained from 600-second exposures with an Antlia ALP-T 5nm dualband filter to emphasize ionized hydrogen. 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, Tecnosky Vision 571C camera, EQ6-R Pro mount, and Pixinsight processing.

NGC2244 and the Rosette nebula in narrow band

I've done too many different colour schemes and palettes for this data now, so i'm going back to basics for this one - h-alpha=red oiii=blue, and oiii=green. bi-colour with a red-ish tone.

might upload a different one some other time.

Taken using my trusty skywatcher ED80/atik16hr combo.

ED80 - ATIK16HR - EQ6 - Finderguider - astronomik ha clip/2" filter, baader oiii 8.5 ccd. filter.

altair 0.6x reducer, PHD2, Ps. nebulosity. software.

Only about 1.5 hrs in 5 and 10 minute exposures.

English below

Dopo più di due mesi sono riuscito a lavorare queste riprese sulla Cometa C/2025 Swan. Che abbia trovato il tempo proprio la sera di Natale è un caso , comunque una caso piacevole!

Sono solo 12 minuti di pose guidate da 30 secondi mentre la cometa passa in campo ricco di stelle della nostra Via Lattea la sera del 17 ottobre.

Newton 150/600, correttore 0.95x, camera tecnosky Vision 571C, Eq6R Pro, Pixinsight.

***

After more than two months, I managed to complete these shots of Comet C/2025 Swan. That I found the time on Christmas Eve is a coincidence, but a pleasant one nonetheless!

It's just 12 minutes of 30-second guided exposures as the comet passes through the star-filled field of our Milky Way on the evening of October 17th.

150/600 Newtonian, 0.95x corrector, Tecnosky Vision 571C camera, EQ6R Pro, Pixinsight.

Dslr image mosaic (2 frame)

reprocessed - i was going to add H-alpha data but it just did not come out right - no idea why. :\ possibly bad sky conditions or something...

Ed80/350D/EQ6

approx, 6x600s x 2 panes

stacked dss merged and process in Ps.

I was forced to exposure for only 30 seconds because I left my intervalometer home. This 100x30s processed image (Pixinsight and PS CS 6.0) @ iso 1600-29 exp, 2200-21 exp, and 3200-50 exp, Nikkor 180mm ED f/2.8 @ f/2.8, Nikon d7100 was taken during the evening of 8 Oct 18 from Vail, Arizona. Moonless clear skies with excellent transparency resulted in a sharp crisp image. Using AstroTrac x320 unguided mount.

I was quite surprised that this limited exposure and wide open f-stop could produce such a nice rendering of this deep sky object.

Compare to my 7.5 hour integrated time version: www.flickr.com/photos/79387036@N07/29683280310/in/album-7....

English below

Nel braccio del Perseo della nostra Galassia che si proietta nella costellazione di Cassiopea si trova questa nebulosa che ricorda la chela di un'aragosta. La parte settentrionale forma una sorta di anello per via del vento stellare di stelle giganti.

Esposizioni da 10 minuti per ciascun filtro, 73 per il dualband Antlia ALP-T 5 nm e 52 per l'Optolong L-Synergy. L'elaborazione scelta è la Hubble Palette SHO dove lo zolfo ionizzato (Sii) va nel canale rosso, l'idrogeno ionizzato (H-alfa) nel verde l'ossigeno due volte ionizzato (Oiii) nel blu.

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

L'integrazione totale arriva aquasi 22 ore complessive.

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.

This nebula, reminiscent of a lobster's claw, is located in the Perseus arm of our Galaxy, which extends into the constellation Cassiopeia. Its northern portion forms a ring due to the stellar wind from giant stars.

10-minute exposures were taken for each filter: 73 for the dual-band Antlia ALP-T 5 nm and 52 for the Optolong L-Synergy. The Hubble Palette SHO processing was chosen, where ionized sulfur (Sii) is in the red channel, ionized hydrogen (H-alpha) in the green, and doubly ionized oxygen (Oiii) in the blue.

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

The total integration time comes to almost 22 hours in total.

The whole thing 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, processed in PixInsight.

Hacia el núcleo galáctico de la Via láctea.

Español:

La Vía láctea es una galaxia espiral tipo SBbc, es decir una galaxia espiral barrada intermedia. En esta captura detallada de la vía láctea realizada en las Melosas, Chile, podemos encontrar diversidad de objetos astronómicos del espacio profundo, desde nebulosas oscuras, nebulosas de formación estelar, de emisión y de reflexión, y una basta cantidad de estrellas, en la parte mas brillante de la galaxia esta el núcleo, un pseudobulbo donde se encuentra un gigante dormido, Sagitario A*, el agujero negro supermasivo central de nuestra galaxia.

Reprocesado de datos capturados en Las Melosas el pasado 13/04/2018.

Autor: Mario Poblete

In the attached image you can see a small group of galaxies that are part of the Virgo Galaxies Cluster, an area with a diameter of over 100 million light years that includes thousands of known galaxies.

To structure the data, the main galaxies in this image are:

NGC 4216 (center) is also known as the Silver Streak Galaxy and is located in the constellation Virgo, about 55 million light-years from Earth. With about 100,000 light-years in diameter, Silver Streak is similar in size to our galaxy, and is one of the largest and brightest galaxies in the Virgo Cluster.

NGC 4222 (in the lower left corner) is recorded as part of the constellation Coma Berenice, although it is part of the same group of galaxies. This galaxy is about 62 million light-years away and has an apparent diameter of 70,000 light-years, making it the smallest galaxy in this group.

NGC 4206 (in the upper right corner) has a calculated diameter of just under 100,000 light-years and can be seen in the constellation Virgo, almost 70 million light-years away from us.

As a bonus, in the attached image is visible (barely) a quasar that is 11 BILLION light-years away from Earth. By definition, a quasar is an active galactic nucleus that emits huge amounts of energy, and is also considered one of the oldest "objects" in the universe.

For those interested, I have attached in the lower right corner an image with the position of the quasar.

………………………………………..

Equipment and settings:

Mount: SW EQ6R

Telescope: SW 150/750

Camera: ASI 533MC Pro

Filter: Baader UV/IR cut

Integration: 3h06’ ( 93 exposures x 2min )

Stacking with DSS. Edit in Pixinsight.

Location: my Bortle 6+ backyard

IC 5146 a.k.a. Cocoon Nebula

…………………………..................

IC5146 is a emission/reflection nebula in interaction with a star cluster. The cosmic dust floating around the nebula and the ionized gas by nearby stars form ideal conditions for the formation of new stars, making the Cocoon Nebula a true cosmic nursery.

As general information, IC 5146 has a diameter of about 15 light years and can be seen in the constellation Cygnus, being at a distance of about 4000 light years from Earth.

#luciannicu

…………………………

Equipment and settings:

Mount: Skywatcher Eq6 R

Telescope: Orion Optics VX6

Camera: ASI 533MC Pro

Filter: Baader UV/IR cut

Total integration: 4h.

120 light frames x 120 sec, + calibration frames.

Stacking in Deep Sky Stacker.

Edit in Pixinsight

Location: My Bortle 6+ backyard.

NGC6992 Veil nebula (aka network nebula) in the Cygnus loop supernova remnant.

A Bi-colour image of hydrogen alpha and Oxygen3. filters. and a monochrome camera.

Taken through my ED80 refractor.

8 x 300s ha - 9x300s OIII

Stacked in deepskystacker and processed in Ps.

Had another go at the triangulum galaxy - M33, sometimes called Pinwheel galaxy. Its pretty big (or closecompared to most other galaxies except Andromeda which is relatively nearby. ED80 /350D / EQ6

about 10 x 6, 8 and 10 min exposures, using CLS filter.

Andromeda Galaxy a.k.a. Messier 31

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

Andromeda, the largest galaxy in the so-called Local Group of Galaxies to which our galaxy also belongs, is 2.5 million light-years away and can be seen (even with the naked eye) in the constellation Andromeda. As general information, Andromeda is about 1.5 times larger than the Milky Way, with a diameter of 220,000 light-years (compared to the Milky Way which is 120-140,000 light-years in diameter) and contains more than 2 times as many stars. Although the first mention of this celestial object dates from 960, the first to give a more detailed description was the German astronomer Simon Marius, in the 1600s.

It should also be mentioned that Andromeda and the Milky Way are approaching with about 100 miles per second, experts estimate that in about 3-4 billion years the 2 galaxies will collide and thus form a new giant galaxy.

The attached image only shows part of Andromeda because the equipment I used was prepared for another target.

Equipment and settings:

Mount: Skywatcher EQ6R Pro

Telescope: Skywatcher 150PDS newtonian telescope

Camera: ASI 533MC Pro

Filter: Baader UV/IR cut

Integration: 52min

26 light frames x 2 min + calibration frames

Stacking with DSS. Edit in Pixinsight si Lightroom.

Location: my Bortle 6+ backyard

Nova PNV J23244760+6111140 (PNVinCas) was discovered on 18 March by Japanese amateur astronomer Yuji Nakamura.

Here it is, centre-frame, the middle of a line of 3 below and slightly left of the triangle of 3 golden stars, the scene surrounded by the Bubble Nebula and open cluster M52 (NGC 7654).

Skywatcher Quattro 8" with Altair Astro 26C camera, -10ºC, gain 1000, 2min

subs:.

Lights: .Baader Neodymium: 10.

UHC: 5.

Bias: 128.

Dark: 32.

Flats: 8 each.

AstroPixelProcessor and Affinity

telescopius.com/pictures/view/82557

www.popastro.com/main_spa1/blog/2021/03/19/nova-in-cassio...

NGC 2903

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

Discovered over 200 years ago by astronomer William Herschel, this galaxy is just over 30 million light-years away and can be seen during the spring nights in the constellation Leo. NGC 2903 is very similar to our galaxy in both size ( abt 100.000 light years diameter) and structure, with both galaxies being classified as "barred galaxies”. What makes it stand out (or not, in terms of popularity) is its position in night sky, being a "field galaxy" or solitary galaxy, meaning it is not part of a larger group of galaxies and is not affected by any external gravitational force, thus being gravitationally alone.

I think that, despite its "shy" position in deep space, this galaxy deserves a popular name, especially since it is not an impossible target, a focal length of 5-600 mm being able to bring out some details.

………………………………………..

Equipment and settings:

Mount: SW EQ6

Telescope: SW 150/750

Camera: ASI 533MC Pro

Integration: 5h30’

Stacking with DSS. Edit in Pixinsight.

Location: my Bortle 6+ backyard

The Rho Ophiuchi and the Antares region are incredible glimpses of the night sky. They are full of multicolor reflection and dark nebulae.

Blue, orange, cyan and red nebulae decorate one of the most beautiful constellation of the boreal sky: the Scorpius (one of my favourites).

In this photo on the left you can see the cyan/blue Rho Ophiuchi nebula near a scythe-like dark nebula on the right. Two of the three stars inside the Rho Ophiuchi nebula are actually double stars.

Antares is on the right, just a little bit over the frame (south). That's why everything looks golden in that area (Antares is a red giant).

Unfortunately the sky was not perfectly clear that day so the photo is not like I imagined it.

Canon EOS 60D (unmodded) and TS APO 80/480 Triplet on a HEQ5 guided mount (QHY5L-II + 60/200).

Photos were acquired with Astrojan Tools and PHD Guiding.

Calibration and stacking with MaximDL and post processing with PixInsight LE and Photoshop.

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⚙️ TECHNICAL DETAILS:

480mm - f/6.0 - ISO800

Light Frames: 24x300''

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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.

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collected a sparse amount of data for M94 last time i was out.

Luminance isn't too bad - approx. 12 x 240s unfiltered. But RGB was shot through mist, and only 6 x 120s each filter.

Still, i think it's worth posting as it stands :)

RC6 (altair astro version) - QHY163M, Optolong RGB.

EDIT; due to unfortunate positioning of the galaxy in relation to my scope's place on my doorstep, my roof has come between me and M94, so its no longer a 'work in progress' and is now all the data i have - so this is it. Final version! :P

Almost 3 hours on this photo of the most incredible globular cluster in the Milky Way (Hey M13, please don't cry).

In addition to the cluster and some mini-galaxies (Mini in apparent size, not absolute. 😅), I believe I managed to capture Galactic Cirrus (IFN, Integrated Flux Nebula), on the bottom left! Super tenuous, but I think it's there.

So, do you prefer Omega Centauri or the Hercules Cluster?

EXIF:

169x60s, ISO 1600

149 flats, 150 bias, 50 darks

CEM25P, Long Perng 66mm f6, Optolong L-PRO, modified Canon T6i.

Bortle 6

IC443 Jellyfish Nebula HaRGB

6 hours of exposure (3 Ha and 3 colors)

Data collected during two nights Dec 12 and Dec 14, 2015

Andromeda Galaxy - the closest neighbouring galaxy to us at (only) 2.5 million light years.

This image is basically what Andromeda looked like 2.5 million years ago, when the light photons first started out on their long journey to Earth, before ultimately arriving on my camera sensor.

All of the individual stars you can see in this pic are actually in the foreground - a part of our own Milky Way, and therefore much closer to us than Andromeda.

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Experts go easy on me! This is my very first attempt at photographing a DSO and I don't have a scope or tracker. Any advice appreciated :)

- 200mm, manually tracked by adjusting the tripod every 30 or so frames to keep the galaxy as central as possible.

- 400 x 1.6sec exposure (ISO16000,f2.8), 20 x dark frames, 20 x bias frames.

- Stacked using Deep Sky Stacker.

An unfinished work. Only 53 minutes and 30 seconds of exposure.

107x30 ISO 800

Nikon D5000

CEM25P

Long Perng S400-G 66/400 F6 Apo Doublet

No autoguiding this time.

IC1805 is the open star cluster that lies in the center of the heart nebula.

The heart shape itself is not so recognizable here due to the small FOV cropping the outer areas off. This central area has some nice detail surrounding the star cluster.

The image was taken over two different nights, one night for h-alpha data, and another for the OIII.

ED80 - an ATIK 16HR mono camera

Astronomik h -alpha clip filter and Baader OIII filter - EQ6 mount. autoguided with a 50mm finderguider.

PHD2, PS, DSS.

The Cygnus Wall complex is part of the more recognisable North American nebula.

This ridge is approximately 20 light years long and is a huge star forming region. You can see where it is in a larger picture below.

This is a 4 pane mosaic as the field of view was too small to fit in the Cygnus Wall itself.

Details

M: Mesu 200

T: ODK10

C: QSI683 with 3nm Astrodon Ha filter

18x1800s in each pane

Total exposure 36 hours

Total exposure: 4 Min 25 sec

Light frames : 53 x 5"

ISO: 3200

Camera : Nikon D7500

Lens : Nikkor 50mm at f 2.8

Bortle class: 5

English below

Sh2-132, talvolta conosciuta come Lion Nebula, è un'ampia nebulosa ad emissione nella parte più meridionale della costellazione del Cefeo. Si trova a circa 10400 anni luce all'interno del braccio del Perseo della nostra Galassia.

Per ottenere questa immagine ho utilizzato più filtri in pose guidate da 600 secondi: 10 ore e 20 minuti con dualband Antlia ALP-T 5nm, 12 ore e 50 minuti con Optolong L-Synergy, mentre per le stelle un'ora in pose guidate da 60 secondi con filtro broadband SV260. Telescopio newton 150/600 con correttore Tecnosky 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione in Pixinsight.

Sh2-132, sometimes known as the Lion Nebula, is a large emission nebula in the southernmost part of the constellation Cepheus. It is located approximately 10,400 light-years within the Perseus arm of our Galaxy.

To obtain this image, I used multiple filters in 600-second guided exposures: 10 hours and 20 minutes with a dual-band Antlia ALP-T 5nm, 12 hours and 50 minutes with an Optolong L-Synergy, and for the stars, one hour in 60-second guided exposures with an SV260 broadband filter. A 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, a Tecnosky Vision 571C camera, an Eq6-R Pro mount, and processing in Pixinsight.

English below

M33, la Galassia del Triangolo, è la seconda galassia non nana più vicina alla nostra Via Lattea, è posta a circa a 3 milioni di anni luce. Presenta molte regioni di idrogeno ionizzato inserite nei catoghi NGC e IC fra cui NGC604 ben visibile in alto a sinistra rispetto al nucleo.

9 ore in pose da 10 minuti con filtro broadband SV260 e 7 ore e 30 minuti con filtro dualband Antlia ALP-T 5nm in pose guidate da 10 minuti. Telescopio newton 150/600 con correttore Tecnosky 0.95x, camera Tecnosky Vision 571C, montatura Eq6-R Pro, elaborazione in Pixinsight.

M33, the Triangulum Galaxy, is the second closest non-dwarf galaxy to our Milky Way, located approximately 3 million light-years away. It features many regions of ionized hydrogen within the NGC and IC categories, including NGC604, clearly visible to the upper left of the nucleus.

9 hours in 10-minute exposures with a SV260 broadband filter and 7 hours and 30 minutes with an Antlia ALP-T 5nm dualband filter in 10-minute guided exposures. 150/600 Newtonian telescope with a Tecnosky 0.95x corrector, Tecnosky Vision 571C camera, Eq6-R Pro mount, and Pixinsight processing.

IC1396A - Elephant Trunk Nebula

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Located in the constellation Cepheus, at a distance of about 2400 light-years from Earth, IC1396 is an emission nebula with a diameter of over 100 light-years, the gas that forms it being crossed by cosmic dust filaments, more or less dense, these blocking the light emitted by the nebula, thus creating various dark shapes that contrast with the glow of the gas. One of these shapes represents the main subject of the attached image, being at the same time the only one that received a popular name, besides the catalog name. This is the Elephant's Trunk and represents an irregular column of cosmic dust that stretches over a distance of about 20 light-years, being also the main region of the nebula where the new stars are born.

In terms of astrophotography, although it is a well-known nebula, the Elephant Trunk is a target with a medium degree of difficulty, with long exposures and the use of narrowband filters being necessary to end up with a decent result.

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Equipment and settings:

Mount: Skywatcher EQ6R Pro

Telescope: Explore Scientific 102ED + 0.75 APM Riccardi reducer.

Camera: ASI 533MM Pro

Astrodon SHO filters.

Total exposure: 9h40’

Edit in Pixinsight.

Location: my Bortle 6+ backyard

NGC7380 Wizard nebula in Cepheus.

Bi-colour using h-alpha and OIII filters, and processed to look like the Hubble Palette. I'm quite pleased with how it came out. :)

Details:

SW ED80, atik16hr - astronomik h-alpha clip, baader OIII filter.

Ha: 8 x 600s

OIII: 3 x 600s + 5 x 1200s

DSS/Ps

The MilkyWay, Jupiter and Multiple Nebulae.

San Jose de Maipo, Chile.

Sony 35mm F4, iso800.

Captured the May 12, 2019

Autor: Mario Poblete

Der Mond bedeckt teilweise den offenen Sternhaufen Messier 44 am 13.04.2019.

So in etwa hätte es gestern Abend wohl ausgesehen, wenn das Wetter und der Dynamikumfang es zugelassen hätten. (Composite aus älteren Aufnahmen)