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Contains: M 82, Bode's nebulae, NGC 3034
M 82, Bode's nebulae, NGC 3034
M82 was previously believed to be an irregular galaxy. In 2005, however, two symmetric spiral arms were discovered in near-infrared images of M82.
This image was photographed at my home in Valencia.
Imaging telescope or lens:AG14
Mount: Software Bisque Paramount MX
Frames:
Chroma LRGB Ha CCD Filter set
Baader Luminance 2": 40x600" bin 2x2
Integration: 36 hours
Locations: Home observatory, Valencia, Spain
SH2-124 is a faint emission nebula located in the constellation of Cygnus.
Imaging telescope: Vixen VSD 100 f/3
Imaging camera: 9.2mp Sony SX814
Mount: Software Bisque Paramount MX
Guiding telescope or lens: Vixen VSD 100 f/3
Filters: Chroma OIII 3nm, Chroma Ha 3nm and Chroma SII 3nm
Dates: Nov..Dec...2016
Frames: 46x1800" at F3
Integration: 45.0 hours
Locations: Home observatory, Valencia, Spain
The Horsehead Nebula, also known as Barnard 33, is a dark Nebula in the constellation Orion. The Nebula is located just to the south of Alnitak, the easternmost star of Orion's Belt and is part to the much larger Orion Molecular Cloud Complex.
The Nebula was first recorded in 1888 by Scottish astronomer William Fleming on a photographic plate taken at the Harvard College Observatory. The Horsead Nebula is approximately 1500 light years from Earth. It is one of the most identifiable nebulae because of its resemblance to a horse's head.
Due to its recognizable shape the Horsehead Nebula is one of the most famous celestial objects.
The Flame Nebula, designated as NGC 2024 and SH2-277, is an emission nebula in the constellation of Orion. It's about 900 to 1,500 light-years away
The bright star Alnitak, the easternmost star in the Belt of Orion, shines energetic ultraviolet light into the Flame and this knocks electron away from the great clouds of hydrogen gas that reside there. Much of the glow results when the electron and ionized hydrogen recombine
Equipment:
Astro-Tech AT80EDT f/6 ED Triple Refractor Telescope
Sky-Watcher EQ6-R Pro Computerized GoTo Telescope Mount
Orion 50mm Helical Guide Scope & StarShoot AutoGuider
Orion 38mm clear-aperture Field Flattener
PHD2 Guiding Software
Astronomy Tool Actions
Thank you for your comments,
Gemma
Monkey Head Nebula NGC 2174/2175
This is my first image with my new dedicated cooled Astro camera, a ZWO ASI533MC-Pro.
The Monkey Head Nebula, NGC 2174, is a Hydrogen Alpha emission nebula in the constellation Orion and contains the open star cluster NGC 2175 near it's centre. It is approximately 6400 light years from Earth.
Acquisition and processing details:
iOptron CEM70 guided and dithered with PHD2
ASI533MC-Pro at -10°C, gain 101, offset 20
Canon EF 600mm f4 L IS II lens
Optolong L-eXtreme filter
5 hours 25 mins (300s subs) lights
No darks, flats or flat darks
Captured with APT
Processed with DSS and Photoshop + Topaz Denoise
NGC 281 forms part of an HII (ionized Hydrogen) region in the constellation of Cassiopeia.
Also known as The Pacman Nebula, due to its resemblance to the videogame character, (on his side in this image!) lies at a distance of around 9500 light years from Earth.
A feature of this nebulae are Bok Globules. These are isolated small, dark nebulae looking like "little" clumps and are visible in the image.
This image represents only 60mins worth of exposure using a Baader Ha filter. My session was cut drastically short, I wanted to image more, including OIII data, but the ingress of thick cloud put a stop to that idea - what's new! Have to say this was not my primary target but I had considerable guiding issues earlier which wasted a lot of time and was aware of the short window of clear sky. So it was a case of the Pacman Nebula so the night wouldn't be a total waste!
This same cloud prevented me from trying to photograph the spectacular Aurora display which was also taking place this night.
Quite pleased with what I did get as conditions were initially good - pity it didn't continue!
Imaged with my Esprit 120ED with focal reducer. I used my ZWO 1600MMC camera and Baader Ha filter.
15 x 240s Ha -20°C Gain 139
Calibration with Temp. matched Darks, Flats & Dark Flats
Data Processed using AstroPixel Processor, Starnet and Photoshop 2023.
Many thanks for looking!
The Cygnus Wall is the central part of the North America Nebula (NGC 7000) in the constellation Cygnus. It lies approximately 2202 light years away.
Gear and capture details:
Imaging telescope: Takahashi FSQ-85EDX Baby-Q
Imaging camera: ZWO ASI533MC-Pro
Mount: iOptron CEM70
Guiding telescope: Primaluce 60mm Guidescope
Guiding camera: ZWO Optical ASI290MC
Focal reducer: Takahashi Flattener 1.01x for FSQ-85EDX
Software: Adobe Photoshop v23 · Aries Productions Astropixel Processor · openphdguiding.org PHD2 v2.6.10 · RC Astro StarXterminator · Incanus Ltd. Astro Photography Tool
Filters: Optolong L-eXtreme 1.25"
Accessory: ZWO 8x 1.25" EFW · ZWO EAF 5V Electronic Auto Focuser
Dates:Oct. 12, 2021 , Oct. 16, 2021
Frames:Optolong L-eXtreme 1.25": 39x300" (3h 15') (gain: 100.00) -10C bin 1x1
Integration: 3h 15'
Darks: 30
Flats: 50
Bias: 50
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The nebulae, in the sword of Orion, are the brightest in the northern skies and include the Orion Nebula itself (M42), de Mairan's Nebula (M43) and the Running Man Nebula (NGC 1977). They are 1500 light years away and are visible to the naked eye.
Dati: 60 x 300 sec ( 5 ore) gain 5 @ -15° c + 55 dark + 30 flat e darkflat
Filtro: Astronomik UV/IR Block L2
Montatura: EQ6 pro
Ottica: Takahashi FSQ106
Sensore: QHY168C
Cam guida e tele: asi120mm su Scopos 62/520
Software acquisizione: nina e phd2
Software sviluppo: AstroPixelProcessor e Photoshop
Temperatura esterna: 4 ° C - Umidità 56%
My latest record this image constitutes a combined total of 29 hours of exposure!
"SH2-129, the "Flying Bat Nebula," (in the left half of the image) is a large emission nebula spanning about 1.5 degrees in the night sky, which is three times the width of the full moon. It lies approximately 1,300 light-years away from Earth in the constellation Cepheus. Within SH2-129 is the Ou4 structure, or "Squid Nebula,". Ou4 is a much fainter, bluish nebula believed to be a bipolar outflow originating from a triple star system embedded within SH2-129. Ou4 is likely at the same distance as SH2-129 from us, creating a stunning composite of glowing hydrogen and ionized oxygen gases. Their juxtaposition in space adds an extraordinary layer of depth and complexity to this region of the sky.
Adjacent is the dark nebula Barnard 150 (B150), the "Seahorse Nebula," It is a dark cloud of interstellar dust that obscures light from the stars behind it. Located roughly 1,200 light-years from Earth, it is at a similar distance to SH2-129 but represents a very different cosmic phenomenon. While SH2-129 and Ou4 are areas of emission and ionized gases, B150 is a cold, dense region where star formation could eventually take place, contributing to the diversity of nebula types seen in the Cepheus region. These nebulae reflect different stages of stellar evolution and interstellar dynamics." --synthesized from various sources
Askar ACL200: 200mm f/4
ZWO ASI533MC Color Camera at -20C
80xrgb @300s
59xrgb @180s
ZWO ASI533MM Mono Camera at -10C
9xHa @600s
Nikon 70-200mm 200mm f/2.8
ZWO ASI533MM Mono Camera at -20C
30xHa, 74xOiii, 27xSii @300s
142xLum@180s
Guided on ZWO AM5
Processed with PixInsight, Ps
A couple of nebulae in the Milky Way, 16 shots stacked in Photoshop, edited in Lightroom. Celestron CGEM2 mount, autoguiding, 5 minute shots. Cropped.
Horsehead And Flame Nebulae in Orion taken on 10/08/2011.
Horsehead: Barnard 33 in emission nebula IC434 & The Flame Nebula (NGC2024 and Sh2-277)
Telescope AT80LE (80mm) Refractor
Camera: ST8300M with filterwheel
Mount: Losmandy G11 w/ Gemini 2
FIlters:
Ha 5 x 5min
Red 2 x 5min
Green 2 x 5min.
Blue 2 x 5 min
55 min. total
Processed in Deepsky Stacker PixInsight and Photoshop
A look at M78.
Focussed mainly on the details and a natural colour with some subtle variances in the dust, reflection and emission areas.
Hope you enjoy.
Imaging telescope or lens: Astro-Physics RH 305
Imaging camera: FLI MicroLine 8300 CCD-camera FLI
Mount: Paramount-ME
Software: Pixinsight 1.8
Filters: Astrodon Red, Astrodon Green, Astrodon Blue, Astrodon Luminance
Resolution: 3312x2475
Dates: Nov. 27, 2017, Dec. 21, 2017, Dec. 23, 2017
Frames:
Astrodon Blue: 22x600" bin 1x1
Astrodon Green: 25x600" bin 1x1
Astrodon Luminance: 53x600" bin 1x1
Astrodon Red: 20x600" bin 1x1
Integration: 20.0 hours
After a long break with no chance for astrophotography I finally was able to get some done on the weekend.
This is the Orion Nebula along with the Running Man Nebula. Found in the constellation of Orion, the Orion Nebula is one of the closest major star forming regions to Earth and one of the most frequently photographed deep space objects.
This image is a combination of 5 shots of 3 minutes each.
The Rho Ophiuchi cloud complex is a complex of interstellar clouds with different nebulae, particularly dark nebulae. It rises just alongside the Milkyway.
Clouds of glowing hydrogen gas fill this colorful skyscape in the faint but fanciful constellation Monoceros, the Unicorn. A star forming region cataloged as NGC 2264, the complex jumble of cosmic gas and dust is about 2,700 light-years distant and mixes reddish emission nebulae excited by energetic light from newborn stars with dark interstellar dust clouds. Where the otherwise obscuring dust clouds lie close to the hot, young stars they also reflect starlight, forming blue reflection nebulae. The image covers about 40 light-years at the distance of NGC 2264. Its cast of cosmic characters includes the the Fox Fur Nebula, whose dusty, convoluted pelt lies just above center, bright variable star S Monocerotis immersed in the blue-tinted haze right of the Fox Fur, and the Cone Nebula at the left of the frame. Of course, the stars of NGC 2264 are also known as the Christmas Tree star cluster. The triangular tree shape traced by the stars has its apex at the Cone Nebula. The tree's broader base is centered near S Monocerotis. (APOD Text).
Acquisition: 21-25/1/17
Chiswick, London, UK.
17.5 Hours total Exposure (SII:Ha:OIII)
23x1800sHa, 7x1800sSII, 5x1800sOIII
SII and OIII bin 2x2
Equipment:
T: Takahashi FSQ106ED @ f/8
C: QSI683ws Mono CCD @-30C
F: Astronomik Ha (6nm)
M: Celestron Advanced Vx
G: QHY5-II
The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a diffuse nebula situated in the Milky Way, being 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 approx 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. Older texts frequently refer to the Orion Nebula as the Great Nebula in Orion or the Great Orion Nebula
The Orion Nebula is one of the most scrutinized and photographed objects in the night sky, and is among the most intensely studied celestial features.[8] The nebula has revealed much about the process of how stars and planetary systems are formed from collapsing clouds of gas and dust. Astronomers have directly observed protoplanetary disks, brown dwarfs, intense and turbulent motions of the gas, and the photo-ionizing effects of massive nearby stars in the nebula.
Details
M: Avalon Linear Fast Reverse and Mesu 200
T: Takahashi FSQ85 0.73x and AT 8" RC CF
C: QSI690-wsg with 3nm Ha filter and Hutech IDAS filter, QSI683-wsg with Baader red, green and blue filters
14x1800s Ha (FSQ85) 16x45s Ha (FSQ85) 79x40s Ha (2x2 bin AT 8" RC)
31x600s Lum (FSQ85)
Red - 50x300s (FSQ85), 15x10s, 20x60s
Green - 50x300s (FSQ85), 15x10s, 20x60s
Blue - 50x300s (FSQ85), 15x10s, 20x60s
There is a total of 26 hours, 32 minutes and 10 seconds
Here is my first image in LRGB since my return after some time out.
Some nice data to play with from SSRO - spent a lot of time working on the layers of colour and tone to try and provide as many perceived details as possible.
Plate solving does not seem to recognise this area - maybe it is too busy!
There are a plethora of images from the main blue reflection nebulae a variable nebula, some dark nebula and for good measure some Herbig-Haro objects.
Hope you enjoy.
Imaging telescope or lens:RCOS 16
Imaging camera:FLI Proline 16803
Mount:Planewave 200HR
Filters:Astrodon Blue, Astrodon Red, Astrodon Luminance, Astrodon Green
Resolution: 3927x3886
Dates:May 25, 2017
Frames: 134x1800"
Integration: 67.0 hours
Avg. Moon age: 29.15 days
Avg. Moon phase: 0.17%
Astrometry.net job: 2612749
Locations: SSRO Remote Observatory, Cerro Tololo, None
Charity Event for Bat World Sanctuary. More info on The Nebulae's items here: thenebulae.wordpress.com/2015/10/12/tn-the-truth-about-ba...
Rho Ophiuchi Cloud Complex
........................................................
Located at about 500 light-years from Earth, Rho Ophiuchi is undoubtedly one of the most spectacular and colorful parts of the night sky.
Emission nebulae, reflection nebulae, dark nebulae or star clusters, all can be found in this small part of the sky. There is also a star nursery, practically the closest to Earth, and not to forget Antares (in the yellow area of the attached photo), a giant star, 700 times larger than the Sun, and 10,000 times brighter.
A book could be written about this area, so I will stop here with the description. I hope I will be lucky enough to repeat the experience at the next new moon.
……………………………………………
Equipment and settings:
Mount: Skywatcher Star Adventure GTI
Camera: Nikon D610 – astro modified
Lens : Rokinon 135mm F2
Settings: F 2.8, ISO 1600
Total exposure: 80 minutes (53 exposures x 90 sec)
Calibration frames: 15 darks.
Location: Bortle ¾.
Edit : Pixinsight.
about 4 of total interation time in LRGB, from Tiglieto (GE) with SQM 21.09. Taken with an astrograph RC8 Carbon Tecnosky, redu/flattener Astrophysics 0.67x and a ZWO ASI1600 Mono on Skywatcher AZEQ6
full specs: www.astrobin.com/417872/
Started something completely new for me here. Ha-OIII Bicolour Version of Elephants Trunk Nebula in IC 1396.
ASI 2600 MC Pro - Skywatcher 150/750 PDS - NEQ 5
Optolong L-Extreme
Asiair & Mgen
51 x 600s
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Sh 2-132 is a very faint emission nebula 10,000 light-years away from Earth spanning around 270 light-years. Sh2-132 lies in Cepheus.
Hubble Palette SII Ha OIII with an intergration of arround 30 hours at f3.
The Tadpoles
A dusty emission nebula in Auriga, approximately 12,000 light years from Earth.
Technical card:
Captured 6 March 2021
Bortle 4
iOptron CEM70 guided and dithered with PHD2
ASI533MC-Pro at -15°C, gain 101, offset 15
Canon EF 600mm f4 L IS II lens
Optolong L-eXtreme filter
3 hours 10 mins, 19x600" lights
No darks, flats and flat darks
Captured with APT
Stacked and processed with DSS and Photoshop
Starry night featuring the milky way nebulae at The Pinnacles desert in Western Australia.
This photo is one of the frames of an attempted time lapse that I had to cancel because I was getting too sleepy and tired at 3AM. The interval was cancelled after 230 shots, so it made up to 9 seconds of time lapse at 25 fps :(
The Rosette Nebula (also known as Caldwell 49) is a large, spherical (circular in appearance), 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, the stars of the cluster having been formed from the nebula's matter.
The complex has the following NGC designations:
NGC 2237 – Part of the nebulous region NGC 2238 – Part of the nebulous region
NGC 2239 – Part of the nebulous region (Discovered by John Herschel)
NGC 2244 – The open cluster within the nebula (Discovered by John Flamsteed in 1690)
NGC 2246 – Part of the nebulous region
The cluster and nebula lie at a distance of some 5,000 light-years from Earth) and measure roughly 50 light years in diameter. The radiation from the young stars excites the atoms in the nebula, causing them to emit radiation themselves producing the emission nebula we see. The mass of the nebula is estimated to be around 10,000 solar masses.
A survey of the nebula with the Chandra X-ray Observatory has revealed the presence of numerous new-born stars inside optical Rosette Nebula and studded within a dense molecular cloud. Altogether, approximately 2500 young stars lie in this star-forming complex, including the massive O-type stars HD 46223 and HD 46150, which are primarily responsible for blowing the ionized bubble. Most of the ongoing star-formation activity is occurring in the dense molecular cloud to the south east of the bubble.
A diffuse X-ray glow is also seen between the stars in the bubble, which has been attributed to a super-hot plasma with temperatures ranging from 1 to 10 million K. This is significantly hotter than the 10,000 K plasmas seen in HII regions, and is likely attributed to the shock-heated winds from the massive O-type stars.
Source: en.wikipedia.org/wiki/Rosette_Nebula
Taken at McLean Illinois at the Sugar Grove Nature Center on Dec 27, 2016.
This is a narrowband image: Ha, SII and OIII 8 x 300 each.
Hardware: SBIG ST8300M, Orion APO EON 120 on an Orion Atlas Mount
Processed with CCDStack, Photoshop CS3 and ImagePlus
There is a little field rotation in the lower portion that I tried to fix but it is still somewhat noticeable.
Est-il encore nécessaire de présenter la grande nébuleuse d'Orion qui reprend ses visites hivernales ?
Sur cette photo, j'ai capturé la grande nébuleuse d'Orion SH 2-281 et la nébuleuse de l'homme qui cours SH 2-279 qui lui est adjointe au dessus, ainsi que la nébuleuse de la flamme (NGC 2024) et la nébuleuse de la tête de cheval qui se voit distinctement dans IC 434, cette immense nébuleuse rouge vif. J'ai également capturé des IFN (Integrated Flux Nebulae) et une partie de la boucle de Barnard (SH 2-276) à gauche en rouge, qui englobe l'ensemble de ces nébuleuses.
Matériel : Canon 1200 D défiltré partiel + Samyang 135 f/2 @f/2.8 + Star adventurer 2i
EXIFS : 330 sur 393 poses de 50 s (4h35 de pose cumulée), iso 800
Softs : Siril + Gimp
Close to the Edge.
An inadvertent capture of an as yet unnamed Nebula in an undiscovered extra-galactic region beyond time or space.
Fuji FP-100c, Polaroid Colorpack II Land Camera.
'Roid Week Autumn 2020 6/2
"We are stardust, we are golden" - Joni
Thanks everyone for a very enjoyable Polaroid Week.
Intergalactic Crocodile departing for the dusty emission nebula in Auriga.
moonrocksastro.com/index.php/2015/12/23/intergalactic-cro...
This is a mosaic made up of three panels with an integration of around 35 to 45 hours of exposure.
Caldwell 31, a huge, sprawling nebula spanning five light years and surrounding the ‘Flaming Star’, AE Aurigae, the bright star visible in the upper portion of the nebula. AE Aur (mag. +6) is an runaway star that is thought to have been one of three stars ejected from near the Trapezium in Orion 2.7 million years ago. It’s a class-O hydrogen fusing dwarf that is at least 30,000 times more luminous than our Sun. The nebula and the star lie around 1500 light years away.
The smaller nebula at the top is IC405, commonly known as the Tadpole Nebula for the small ‘tadpole-like’ structures of dense, cooler gas that are being shaped by the intense radiation from the hot stars of the young open cluster NGC 1893, embedded in the nebulosity. It’s just possible to see the tadpoles to the upper right of the largest dark section at the centre of the nebulosity, with the open cluster just above. IC405 lies 12,000 light years away.
Imaging telescopes or lenses: Vixen VSD
Imaging cameras: Starlight Express SXVR-H18
Mounts: Sky-Watcher MX
Guiding telescopes or lenses:Vixen VSD
Guiding cameras: sx loadstar
Software: Sequence Generator Pro, PHD, Photoshop CS5
Filters: Baader Ha, OIII & SII
Accessories: Starlight Xpress USB filter wheel, Baader Planetarium 36mm narrowband filters
This was the intended target from yesterday but the total time between clouds was shorter.
Modified Nikon D750 (sensor filter removed)
Nikon 70-200mm with TC-14: 280mm
Optlong L-Pro filter, LXD75 mount
50x30" iso1600 shots stacked with DeepSkyStacker, processed in Ps
HaO-SHO (Luminance with Ha & OIII layers, Color with Ha,OIII,SII - filters narrow band 12nm)
Ha:2h24, OIII:1h48, SII:30mn exposure time at 800 iso (Tournefeuille, France)
600/80 mm Refractor – 450D EOS filter removed - Ha, OIII, SII filters
Preprocessing with IRIS (Christian Buil software)
Image processing with Photoshop
Final touch with Lightroom
LBN 552 AND LDN 1228 ARE TWO EXTREMELY WEAK MOLECULAR NEBULAE IN CEPHEUS, ALSO CALLED "FIGHTING DRAGONS" BECAUSE OF THEIR SHAPE.
This is an open cluster with an emission nebulae surrounding it in the constellation of Cepheus (The King), it is 7,200 light years distant from Earth with a magnitude of 7.2. The cluster contains 45 fainter stars and some maybe obscured by the nebula. The nebula portions of this object is 1,800 light years away, much closer than the open cluster.
Taken in St. Joseph, IL on 9/15/2017
Image type: Narrowband Ha OIII SII 10 x 300 sec. each.
Hardware: AT8RC, QHY9
Software: Nebulosity, CCDStack, Photoshop CS6, Images Plus
I'm fascinated with Dark Nebulae; dust clouds and lanes. This is my first standalone Linds Dark Nebula object. My problem is I can only take these at dark sky sites. This one from Gladwin, MI.
Fanciful names given to two of the dark nebulae/Bok globules around the edge of the central cavity in the Rosette nebula.
Stars removed with StarNet tool in PixInsight.
Detail from previous image:
www.flickr.com/photos/16271433@N02/52677186304/in/photost...
DESCRIPTION: I was waiting one month for acceptable weather. Small clear window opened on November 7 and I took 105 min data of this beautiful nebulae. I would very appreciate your comments and tips…
OBJECT: IC 1805 The Heart Nebula and IC 1848 The Soul Nebula, Constellation Cassiopea, apparent magnitude approx. 7, apparent dimension approx. IC1805 150 x 150 arcmin, IC1848 150 x 75, FOV 2,7 x 1,8 arcdeg,
GEAR: Nikon Z7 Kolari Full Spectrum + Nikkor Z 70-200/2,8 @ 200. Kolari UV/IR/H+/S filter, pixel scale 4,48 arcsec/px, tracking mount iOptron CEM60EC - 3 star alignment, no auto guiding, dew heater.
ACQUISITION: November 7, 2020, Struz, CZ, Subexposure 180s, f 2,8, ISO 400, Interval 15 s, Lights 35x, Darks 40x, Bias 20x, Flats 30x, DarkFlats 30x. Total exposure time 105 min. Night, breeze, 3 C, no Moon, Light pollution - Bortle 5.
STACKING AND POST PROCESSING: AstroPixelProcessor (stacking, background neutralization, light pollution removal, calibrate background and stars colours) , Adobe Photoshop CC 2020 (stretching, black and white point settings, star reduction, enhance DSO, colour balance, contrast setting). Cropped 4,6 x, image size 3840 x 2560 px.
Horsehead and Flame nebulae on visible and infrared spectrum. Stacking of 250 shots of 30'' with iOptron + darks and bias. Stacking with DSS. Canon 5Dmk4 Full Spectrum, Tamron 600 mm f/6.3, iso 10k. Taken on 03.01.2022 from Sounion, S. Attica, Greece.
Photography and Licensing: doudoulakis.blogspot.com/
My books concerning natural phenomena / Τα βιβλία μου σχετικά με τα φυσικά φαινόμενα: www.facebook.com/TaFisikaFainomena/
A HDR blend of 6 shots at two exposure levels, quite a complex edit shooting over the roof in the backyard at Hawker. Amazing dust detail in there. A bit of star reduction and -ve texture slider in Lightroom.
M17 (Messier 17) , the Omega nebula
I'm not completely satisfied, but it is a first attempt! only 1 hour total exposure! I hope to photograph it better soon and with more integration time, before the end of the summer!
this is about 10 shots in dual iso 1600/2500 with a CDS Canon 50D on a 130/910mm super-apo triplet. taken from Italian western alps (cugn di goria, colle di sampeyre, 2500m)
wiki:
DWB-111 Propeller Nebula is an emission nebula in the constellation Cygnus. The Propeller Nebula is actually part of a much larger nebular complex which are common in this area of the sky. The Propeller Nebula is comprised of Ha and some SII very little OIII is available. There is very little known about this object, distance to this object or the source of excitation is unknown.
Source: Bill Snyder Astrophotography where he has a great image of DWB111 with the Ha, OIII and SII as a reference. billsnyderastrophotography.com/?page_id=4775
Taken at McLean Illinois at the Sugar Grove Nature Center on Nov 9 and 20, 2016
This is a bicolor narrowband image composed of Ha and OIII of 20 x 300 each, this image would have benefit for SII.
Hardware: SBIG ST8300M, Astro-Tech RC8 on an Orion Atlas Mount
Processed with CCDStack and Photoshop CS3
Red hydrogen emission and blue reflection nebulae, dark molecular clouds and a bright star sitting in the middle, flooding the scene its yellow light... Sounds like the Rho Ophichui region?
Sure. There is, however, another smaller, but similarly colorful area in the sky:
Meet the Cave Nebula!
Officially designated Sh2-155, the Cave Nebula in the constellation Cepheus, is a diffuse nebula of ionized hydrogen with ongoing star formation activity, at an estimated distance of 2400 light-years from Earth. It lies within a larger complex containing emission, reflection, and dark nebulosity.
The name "Cave Nebula" for Sh2-155 was coined by Patrick Moore, presumably derived from photographic images showing a curved arc of emission nebulosity corresponding to a cave mouth. Earlier, the name was already used to refer to another brighter but unrelated reflection nebula in Cepheus, known as Ced 201. The name's application to Sh2-155 has come into vogue through the nebula's inclusion in Moore's Caldwell catalogue as object Caldwell 9.
EXIF
ZWO ASI 1600MM Pro
Baader Ha, Oiii, RGB filters
William Optics Megrez 88, f/5.6
Skywatcher AZ-GTI controlled with ASIAir
ZWO ASI 385MC for autoguiding
PixInsight processing
Total integration time: 5h10min