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Showing results for tags 'nebula'.
Found 233 results
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Taken on the night of 12 September. NGC6826 - The Blinking Nebula. This on Wiki: NGC6826 is a planetary nebula located in the constellation Cygnus. It is commonly referred to as the "blinking planetary", although many other nebulae exhibit such "blinking". When viewed through a small telescope, the brightness of the central star overwhelms the eye when viewed directly, obscuring the surrounding nebula. However, it can be viewed well using averted vision, which causes it to "blink" in and out of view as the observer's eye wanders. A distinctive feature of this nebula are the two bright patches on either side, which are known as Fast Low-Ionization Emission Regions, or FLIERS. They appear to be relatively young, moving outwards at supersonic speeds. Right ascension: 19 h 44 m 48.2 s Declination: +50° 31′ 30.3″ Distance: ~2000 ly Apparent magnitude (V): 8.8 Apparent dimensions (V): 27″ × 24″ Constellation: Cygnus Radius: 0.22 x 0.20 ly Designations: HD 186924, SAO 31951, Caldwell 15 Equipment: Imaging: C9.25; CGEM (diy hypertuned); ASI385MC; Baader neodymium filter; Astro Photography Tool Guiding: Travelscope 70; SSAG; PHD2 Processing: DSS; Photoshop CS4 Extended 99 x 20" lights, of which 63 were stacked; 50 x darks; 50x bias; 50 x flats Looks like I'm going to have to have another go at my collimation. Very happy with this even so, as it's the first serious imaging I've done for sooo long! A lot more data is required to bring out the detail in the nebula. Comments/suggestions welcome.
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Messier 57 is is just coming into a position for a decent look around 11 30 pm. IT is a colourful object and I thought it would give me a good target with which to practice my colour developing in PS/Lightroom. I have read so much about how to produce a LRGB image from the four stacked/calibrated luminance, red, blue and green images, a lot seems contradicatory and some, when followed, gave me colour yes, but not as we know it. I am sure a fair chunk must be put down to me. Anyway, I now have a work flow which gives me colour, sometimes resembling what other people have obtained. Progess of sorts. This images is based on 114s subs at gain 139, offset 21. L 39, R 20, G 20, B 19 Calibrated and stacked in DSS (flats, dark flats and darks) Messier 57 Ring Nebula in Lyra NASA: M57, or the Ring Nebula, is a planetary nebula, the glowing remains of a sun-like star. The tiny white dot in the centre of the nebula is the star’s hot core, called a white dwarf. M57 is about 2,000 light-years away in the constellation Lyra, and is best observed during August. Discovered by the French astronomer Antoine Darquier de Pellepoix in 1779, the Ring Nebula has an apparent magnitude of 8.8 and can be spotted with moderately sized telescopes. Equipment: Celestron 9.25 XLT at F10, Skywatcher EQ6 Pro GEM, ZWO 1600MM Pro, ZWO EFW with ZWO LRGB filters, QHY5IIC guide camera on Skywatcher 9 x 50 finderscope, Celestron Focus Motor Software: Ascom 6, Eqmod, Cartes du Ciel, AstroPhotography Tool, PHD2
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Since I am very new to this, I struggle a lot. Especially when observing planets and also recently deep sky objects. My telescope is an amateur telescope and its almost 11 years old (The telescope was re used a year ago). During summer of last year I took photos of Saturn,Jupiter and a month ago took photos of Venus and Mars. About 2 days ago I stumbled upon a new thing in the sky, (Unfortunately, I didn't take a picture). It definitely was in the Orion constellation as I had observed Betelgeuse and the 3 stars that were close to each other. After a couple of minutes later I saw 2 stars next to each other and another two which were on top of the other star, surrounding these set of stars were a blue-ish and grey-ish colour at the same time. I had done some research and many people told me it was the trapezium cluster found in Orion. I honestly don't know. Any ideas? Thanks.
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Hi! I've recently acquired a new Astromodified Canon rebel XT and I've tried to take pictures of nebulas using it but I've noticed that there are these weird black artifacts that keep appearing in my images. Would like to know if anyone has experienced this before? Or are these dirt/dust specs on the camera, filter, and telescope glass? I've attached some of my edited and raw pictures for your reference. The black artifacts can already be seen in the raw image of the horsehead nebula and after stacking I think it got amplified. Anyway, advance thanks and I hope everyone's doing well.
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From the album: William Optics GT71 II
© Garrick Walles
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From the album: Deep Sky Imaging
The Omega Nebula, aka The swan Nebula, M17/NGC6618 imaged in Narrowband and combined in Hubble palette style. The photo was imaged with a astromodded and cooled DSLR through a 8" SCT across multiple networks gets from 28 July - 8 August 2019.© Mariusz Goralski
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From the album: First Images
© Garrick Walles
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From the album: First Images
Deneb and Sadr (Cygnus) | 50 30 second subs Dithering | 0 Darks | 0 Bias | 0 Flats Canon 650D Samyang 100mm 2.8 ED Skywatcher Adventurer Mini -
From the album: Messier and NGC Objects
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From the album: Mike's Images
Cat's Paw Nebula - NGC 6334 ( aka Bear Claw Nebula ) An emission nebula in Scorpius (near the scorpion's tail) RA 17h 25m 39.6s ; Dec -35deg 43' 48" . 7th August 2015. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 28 x 200sec (starting at zenith) no moon, 3deg C, 70%RH, moderate LP. PixInsight© Copyright Mike O'Day 2015 - all rights reserved
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From the album: Mike's Images
Cat's Paw Nebula - NGC 6334 ( aka Bear Claw Nebula ) An emission nebula in Scorpius (near the scorpion's tail) RA 17h 25m 39.6s ; Dec -35deg 43' 48" . 7th August 2015. Skywatcher Quattro 10" f4 Newtonian. Skywatcher AZ Eq6 GT Mount Orion 80mm f5 guide scope and auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90. ISO800, 14bit NEF, Long Exp. NR on. 28 x 200sec (starting at zenith) no moon, 3deg C, 70%RH, moderate LP. PixInsight© Copyright Mike O'Day 2015 - all rights reserved
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From the album: Nebulae
© Graeme Healey Photography
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Observations of the Sculptor Galaxy ( NGC 253 ) by William and John Herschel ......... Part 2. Observations of "Caroline's Galaxy" by Sir John Herschel, 1830's Sir John Herschel, the only child of Mary Baldwin and Sir William Herschel, was born in 1792 when his father was in middle age and already famous as one of world's leading astronomers. Having excelled in school, and no doubt inspired by his famous elders, John Herschel decided upon a career as a 'man of science' and set out to pursue a wide range of interests; with one particular focus being a continuation of the study of the heavens commenced by his father and aunt, Caroline Herschel. In 1820, with the assistance of his father, John Herschel supervised the construction of a new telescope at Slough in England. As described in the extract below ( from a paper presented to the Royal Society in 1826, titled "Account of some observations made with a 20-feet reflecting telescope ... " ), the telescope had a polished metal mirror with clear aperture of 18 inches, focal length of 20 feet and was modelled on the same design created by his father. It is this telescope, in the 1820’s and early 30’s, following the death of his father and the return of his aunt Caroline to Hanover, that John Herschel used to 'sweep' the night sky and extend the catalogue of nebulae and clusters of stars that was published by his father ( see W. Herschel's Catalogue of One Thousand new Nebulae and Clusters of Stars ). On the 1st of July 1833, having complied sufficient observations, John Herschel presented to the Royal Society an updated list of the positions and descriptions of the Nebulae and Clusters of Stars that he had thus far observed. As noted in the introduction to the paper published in the Philosophical Transactions, he had planned to wait before publishing until he had complied a fully comprehensive general catalogue of objects visible from the south of England. However, due to his expectation of “several more more years additional work” needed to complete the task and his assessment that he now was in a position to address, at least in part, the then current “... want of an extensive list of nebulae arranged in order of right ascension ...”, he elected to present his list, “ ... simply stating the individual results of such observations as I have hitherto made ... “. It was not until October 16, 1863, some thirty years later, that Sir John would deliver to the Royal Society his General Catalogue of Nebulae and Clusters of Stars. As well as introducing many objects that had not previously been recorded, Sir John’s list of 1833 included a re-examination of, and in some cases a small correction to, the positions of many of the deep sky objects observed by his father and noted down by his aunt. One of these re-visited objects was, unsurprisingly, the large and bright nebula discovered by Caroline Herschel in 1783 and recorded in Sir Williams’s catalogue as V.1 / CH 10 ( object number one, of class five ( very large nebulae ) / Caroline Herschel #10 ). In total, John Herschel records around 2500 observations of nebulae and clusters of stars in his 1833 paper; with observation #61 being V.1, the “ Sculptor Galaxy “ . The measured position of V.1is given in RA and the angle from the north celestial pole ( all reduced to epoch 1830.0 ). The description can be interpreted by reference to the legend in the paper. Thus, “ A vL mE vB neb “ becomes “ A very large, much extended, elliptic or elongated, very bright nebula “. He also notes that in addition to this observation, #61, noted down from sweep #306, V.1 was also observed in sweep #292, “but no place was taken”. The figure to which he refers , figure 52, is included towards the back of his paper and is a sketch he made of the Sculptor Galaxy. to be continued ... -
From the album: Deep Sky Objects
3 hours total integration on NGC6995, The Eastern Nebula. 20x180sec Ha and 40x180sec OIII. 25 flats, 25 darks. -
messier 8 The Lagoon Nebula ( Messier 8, NGC 6523 ) in Sagittarius
MikeODay posted a gallery image in Member's Album
From the album: Mike's Images
The Lagoon Nebula ( Messier 8, NGC 6523 ) in the constellation Sagittarius - by Mike O'Day ( https://500px.com/mikeoday ) The Laboon Nebula ( M8 ) is visible to the naked eye under dark skies from most latitudes except the far north. Seemingly covering an area about three times that of the full Moon, M8 actually covers an area somewhat greater than 110 light years and is around 4300 light years from Earth in the Sagittarius-Carina spiral arm of the Milkyway galaxy. Links: https://500px.com/MikeODay http://photo.net/photos/MikeODay Details: Messier 8, NGC 6523 - Lagoon Nebula. also contains: NGC 6526 NGC 6530 NGC 6533 IC 1271 IC 4678 7SGR 9SGR Skywatcher Quattro 10" f4 Newtonian telescope. Skywatcher AZ Eq6 GT Mount. Orion auto guider - PHD2. Baader MPCC Mark 3 Coma Corrector, UHC-S 'nebula' filter. Nikon D300 (unmodified) (14bit NEF). Field of view (deg) ~ 1.35 x 0.90. 20 x 120 sec ISO400. 26 x 30 sec ISO 1600. 23 x 240 sec ISO 200. PixInsight and Photoshop. 2 August 14 . re-processed 24 April 2016 to include the additional subs ( the first version only made use of the 23 x 240 sec ISO 200 subs ) and putting use the processing lessons I have learnt over the past year.© Copyright Mike O'Day 2016 - all rights reserved
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From the album: Deep Sky Objects
Modified Canon 1100D with Canon 500mm f/4 L IS lens @ ISO1600. AstroTrac TT320 Mount. 25x 60 second lights 20x Darks 20x Flats 20x Bias Stacked in DSS and processed in PS. Taken on holiday in Fuerteventura. -
From the album: Astro Collection
Love this little nebula, always a joy to look at and always a frustration to photograph as it never seems to go well, with either gear failure or weather getting in the way every time I try! -
NGC6559 at the center of the milkyway is a photo I created from RGB filters only and at BIN1. Telescope: ASA 12'' F3.6 Mount: DDM 85 Unguided Camera: FLI 16200 Mono Filters: Astrodon Thanks for watching Haim Huli My Flickr Page: https://www.flickr.com/photos/101543943@N04/
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This is the 1st test night for this disabled AA with my new moonlite auto focer mini v2 control ,1st time collecting data on the Horsehead nebula with any camera that I've owned , {30s } 25 frames luminous and 10 red channel combined in AIP4win and PScs2 , astronomy tools . I used an asi 174MM cooled -20c Zwo mini 5 efw , 8 in astrograph , lxd55 mount guided with Orion 50mm mini w/ helical . Captured in Sharpcap live stacking , I'm 0n my way finally got my autofocus set up correctly in Sgp to run a sequence later that week . It's a great feeling when everything is working together.
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Hi Guys, I thought I would share with you my first DSO taken with my new Orion 8" Ritchey Chretien F8 Telescope. The frame is made up of 12 x 4min shots, no light or dark frames, using my Sony A7Rii camera. The camera had the long exposure noise reduction switched on, which does help to reduce the total number of stars captured by the camera, as the Sony A7Rii does tend to overdo the number of stars captured. The telescope was mounted on my trusty skywatcher NEQ6 mount and the guiding was via PHD 'of course' via my skywatcher ED50 guide scope. The shots were taken from my back garden in Stowmarket, Suffolk where I believe I am a Bortie 4 location, so the skies are mostly dark, with just a little light pollution from the main town, no filters used. My normal telescope is a Skywatcher ED100 Pro Esprit F5.5, which is an incredibly sharp scope, but with a wide 550mm field of view, great for capturing the whole of Andromeda but a struggle with smaller images like the Iris Nebula. I will say the Orion RC scope did need to be collimated out of the box, which was a little disappointing, and it was not just a little out of collimation, it was a long way out, but with the use of a collimating tool, I soon had it dialled in. First impressions of the Orion Ritchey Chretien 8" Telescope are fair, not super impressed, as it is nowhere near as sharp as my ED100 Esprit, but then this is to be expected based on price and telescope type, however, the pictures it has produced are pretty good, if you downscale the full 42MP from the Sony A7Rii camera, as can be seen in this picture. I purchased this 8" Orion Ritchey Chretien OTA mainly for Planetary work, but as yet I have not had a chance to 'get onto' a planet, fingers crossed some clear nights will arrive soon, so I can try. I welcome comments, many thanks Jamie
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Finally making progress with guiding and dithering and the autofocuser , sw200pds , modded canon 1000D , Eq6 belt mod -7x300sec 25 flats -25x Bias as darks
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Open star clusters Trumpler 14 & 16 and Collinder 232 with the Carina Nebula a very colourful backdrop Eta Carinae and star clusters Trumpler 14 & 16 and Collinder 232 ( please click / tap on image to see larger ( 1632 x 1632 ) and sharper image ) The stand out member of Trumpler 16 is the unstable hypergiant Eta Carina ( just to the left of the Keyhole Nebula ). A larger ( 3264 x 3264 ) version of this image can be found on my Flickr page. Capture and processing details can be found in this post.
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Carina Nebula with the bright unstable star Eta Carinae in the centre of the image. edit ( 27 March ): Tweak to shadow levels to bring out more detail and also a slight reduction in the brightness of the highlights. A much larger version ( 4562 x 3072 6062 x 4082) is available on my Flickr page. previous version: Carinae Nebula ( NGC 3372 ) ( please click / tap on image to see larger and sharper ) From Wikipedia ... "Eta Carinae is a highly luminous hypergiant star. Estimates of its mass range from 100 to 150 times the mass of the Sun, and its luminosity is about four million times that of the Sun." This HDR image is constructed from 12 sets of exposures ranging from 1/8 sec ( to capture the bright centre of Eta Carinae ) through to 240 seconds. Total exposure time around 13 hours 17-19 March 2018 Image details: Objects in image: Hypergiant, Eta Carinae ( HD 93308 ) in the centre of the Homunculus Nebula Carina Nebula ( NGC 3372 ) Keyhole Nebula Open Star Clusters: - Trumpler 14, 15, 16 - Collinder 232 Field of view ..... 59' 18.2" x 39' 56.0" Image centre ...... RA: 10 45 01.762 Dec: -59 40 52.87 Orientation: North is up Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ). Corrector: ASA 2" Coma Corrector Quattro 1.175x. Effective Focal Length / Aperture : 1470mm f4.7 Mount: Skywatcher EQ8 Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2 Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels) Location: Blue Mountains, Australia Moderate light pollution ( pale green zone on darksitefinder.com map ) Capture ( 17, 18 & 19 March 2018 ): 12 sets of sub-images with exposure duration for each set doubling ( 1/8s to 240s ) all at ISO250. ( 181 x 240sec + 10 to 20 each for the other durations ) Processing: Calibration: master bias, master flat and master dark Integration in 12 sets HDR combination Pixinsight March 2018
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The Monkey Head Nebula The Monkey Head Nebula is an HII emission nebula located 6400 light years away in the constellation of Orion. The nebula is associated with an open cluster of mag. +6.8 located at its centre. With a diameter of approximately 40 arcminutes, the nebula is larger than the full Moon. There is much debate over the correct designation of this object as some sources cite the nebula as being NGC 2174 and some stating the nebula as being NGC2174/5. What is not in contention is that Stewart Sharpless logged this object as SH2-252 in his second and final catalogue completed in 1959. Personally, I go for the nebula being NGC 2174 and the open cluster being NGC 2175! It was and I guess still is, my intention to produce a bi-colour version of this image but the skies have not been kind and just the Ha displayed here has taken 5 difficult nights of cloud-dodging although in fairness, it has been CCD Commander and my automation project that have done most of the starting and ending of the sessions! I decided that with the weather currently deteriorating, I may as well post up the project thus far. Image Stats Mount: Mesu 200 Telescope: Sky-Watcher Esprit 150 Flattener: Sky-Watcher Esprit specific Camera: QSI 683 WSG-8 Filter: Astrodon 3nm Ha Subframes: 22 x 1800 sec Ha Integration: 11 hours Control: CCD Commander Capture: MaxIm DL Calibration, Stacking and Deconvolution: PixInsight Post-Processing: PhotoShop PS3 Full Resolution version Location of the open star cluster NGC 2175 Visually This target lies 2.3° to the southeast of mag. +3.3 Propus and is a two for one object, comprising an open cluster (NGC 2175) and an emission nebula (NGC 2174) although most astronomers associate the nebula with NGC 2175. Lying in a rich star field, the almost circular shape is punctured by a dent in its western edge which stands out particularly well in images and helps to form the ‘monkey-head’ shape from which the nebula gets its common name. Inboard of this dent towards the east is an area of intense star birth. You’ll need a very large telescope to discern the shape of the nebula but a 4- 6-inch telescope will show the open cluster very well. Location of Nebula and associated Star Cluster RA: 06h09m 36.0s DE:+20°29'00" Star Birth Region On the eastern limb there is a dent pushing westward into the nebula and here there is a huge stellar nursery that featured in the Hubble Space Telescope’s IR image (http://hubblesite.org/news_release/news/2014-18) released on 17th March, 2014. The nebula is comprised mainly of hydrogen gas which is ionised by the intense ultraviolet radiation emitted by the hot young stars within the nebula. This ionisation causes the hydrogen to glow red. Also associated with this nebula are some faint regions of reflection nebulosity giving a hazy blue appearance and some relatively faint dust lanes add interest to the interior.
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