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Showing results for tags 'm27'.
Found 67 results
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The Liverpool Telescope is a 2 m f/10 RC scope on La Palma, Canary Islands, that gives away their subs for free once the astronomers are done with them. A great way of keeping up the processing skills for Swedes while waiting for dark nights to come back in September. Of all the Liverpool Telescope data I have processed, this was possibly the best, and I think the final result shows some stunning detail in this nebula. In my humble opinion it is as good as, or maybe even better, than images I have seen from much larger scopes, including the 8.2 m Subaru Telescope (Hubble has only imaged a small detail of it). For this image I used subs from five filters (60, 90 and 120 s exposures, average ca 90 s) taken during 2015-2016. After throwing out subs with eggy stars or poor focus (about 30% of my downloads - LT appears to save everything), I ended up with these: sdss-r 38 x 90 s (red data) Ha 15 x 90 s (33 % mixed with 67 % sdss-r for the red channel) Bessell B 43 x 90 s (mainly blue data) sdss-g 20 x 90 s (mainly blue data, 33 % mixed with Bessell-B for the blue channel) Bessell V 33 x 90 s (used for the green channel) So totally 149 x 90 s or 3.7 hours The camera is a 6 x 6 cm (15 µm pixels) 18 Mpix CCD camera (2x2 bin) of the brand e2v, which I think is chilled to -100°C. Stacking in Nebulosity 4 and processing in PS CS5. The data was so clean that I did not apply any noise reduction but I did some very mild sharpening (deconvolution) using the Focus Magic filter for PS. For comparison. here is an image largely based on data from the 8.2 m Subaru scope. It is in general strikingly similar to my LT image (but I actually did not find it until afterwards - so not used for inspiration): http://www.robgendlerastropics.com/M27-Subaru-HST-BYU-FR.html Most images I have found of it on the net are NB images. Here is Bill Snyder's Ha-OIII version of it: http://billsnyderastrophotography.com/?page_id=1767 Any comments and suggestions most welcome, and for once I also invite pixel peepers!
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The weather´s been hot over here so finally some imaging time and 5 hours a night. Some great fun with the C11 at 1800mm Fl with the ATIK 428 camera. M27 which is 24xRGB 300s Stephan´s Quintet 47x Luminance 600s (I do like this one)
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Finally a clear night and no moon! I was beginning to despair. And, for once, I got all the kit assembled in reasonable time and got a result. No darks or flats, but I will develop the necessary patience, given time. Anyway, something to share at last.
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Partied out from Saturday (my belated 40th), I decided to have a binocular tour in what were truly clear skies. Ursa Minor could be seen in its entirity, the Milky way was visible from the North of Aquila all the way to Perseus (and this is with one or two neighbour's lights still on!). It would have been nice to have a big scope session but work tomorrow and fatigue have conspired against me. Hercules: Both M13 and M92 stood out nicely. So I said goodbye to them for the year. Pegasus: Globular cluster M15 was barely inferior to M13. Aquarius: M2 was less clear but still easy enough to pick up. Vulpecula: Brocci's cluster (a.k.a. the Coathanger) lokked resplendent and M27, the Dumbbell nebula was very clear and bright. Sagitta: M71 came through nicely like a cross between a globular and an open cluster. Cygnus: M39 was lovely, M29 came through nicely, NGC 7000 (Caldwell 20) - almost certain. There seemed to be a paler patch of sky rather than any haze and I think I could detect a dark knot roughly where the gulf of Mexico should be. The sky was nowhere near good enough to see anything close to the distinctive shape but I am pretty sure I have cracked it. I also could see the Cygnus rift reasonably clearly. I can't remember noticing that from home before. Casseopeia: Fast becoming a favourite constellation. I managed to identify, M52, NGC 7789 (easiest of the new finds and quite large), NGC 129, NGC 225, NGC 457, M103 and NGC 663 (all open clusters). There were many other named parts of the constellation I absorbed but did not note. Andromeda: M31, the Andromeda galaxy was as big and bright as I have seen it. Definitely managed M32 in binoculars for the first time, possibly M110 but am far less sure: I have only managed with my scope a couple of times. Triangulum: It was not that high in the sky but M33 was no problem at all. And to think I once had problems with this one, I could look directly at it in binoculars. Perseus: NGC 869 and NGC 884, the Double cluster looked beautiful given it is nowhere its zenith yet. M34 very good too. The best bincular session for a very long time indeed. Great stuff! __________________________________________________ ______ Observing Session: Sunday 16th September 2012, 21:10 hrs to 21:55 hrs BST VLM at Zenith: 5.4 - 5.5 New - Revisited - Failed -
An image of the Dumbell Nebula (M27) taken at Albury Heath in Surrey whilst I was watching for Perseids. 50qty 120 second subs at 800 ISO stacked and processed in Deep Sky Stacker. Nikon D5000, Skywatcher 200p on a HEQ5. M27 Dumbell Nebula by MrLeebert, on Flickr
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Lots of 'firsts' for me on this one:- first time with the Atik 460EX first time with a dedicated astro CCD first time with a mono CCD first time processing LRGB .......I started astro in 2011, using DSLR's & for the first 8 months, just camera lenses. I tell you all this so you don't judge the camera too harshly due to its inexperienced operator ;-) Imaged with an f9 refractor L: 4x300s+2x600s RGB: 4x300s Dark Frames: none Flat Lights: 12x0.5s (I think!) via each filter Stacked in DSS, post processed in PS CS5. I've only cropped the very edge to remove the registration marks, so this is pretty much the field of view I got & the resolution - albeit, I've saved in jpg to upload here. I am content with the processing on the nebula, I'm sure someone with better skills can do a superior job, but for me I was happy enough with it, BUT I have some kind of optical defect which is giving horrible spikes to the larger brighter stars. If anyone can advise how to best process these out, or point me to a tutorial or PS plugin that would be great - I don't feel like doing it one star at a time manually. I'll be investigating the cause of these spikes, but the optics are old & contaminated, so that maybe the cause, I just have not been brave enough to remove the lens cell to give it a good clean.
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Astronomical twilight ends 6:18pm Transparency: 4/5 to 3/5 (above average to average) Seeing: 3/5 (average) Location: Fort Collins, CO Elevation: 4997 ft. (1523 m.) Bortle 6 to 7 skies depending upon which direction you're looking. The Double Cluster is pretty clear tonight. I can see it in my binoculars as well. M31 is very clear, and in the Binoculars as well. I then try and catch M8 which is just barely above the building down the hill from me. The time is 5:40pm MST. M8 gives up it’s nebulosity only using the LP filter I use. Orion UltraBlock Narrowband LP filter. I find M20, M21, M23, M10, M24 with my telescope (8SE) and then: At 6:15 pm, I go for M22, this is a new object for me. M22 is nice and clear, with good granularity, and some individual stars using the 17mm which gives me 119x. This is usually the best globular cluster eyepiece so i leave it in there for the next object. But before I do that, I decide I’m going to find M22 with the 10x50’s using my red dot star pointer. Note: The nice 9x50 RACI finder scope I’m thinking about will not be usable in this way like the crappy little star pointer does. A telrad would be nice I suppose and certainly it's clear why people like them. I'm just looking into making my 8SE non-GOTO (because I'm clearly a star hopper at heart and really want a 16 inch minimum travel dob from Hubble Optics). We shall see if i really even need to do that since I'm actually successfully using the 8SE to teach me the sky. Since I'm taking notes and all. I actually am able to find M22 with my cheap 10x50 bino’s. Fuzzy little ball but definitely there and visible to my binoculars. Next up: M55. It’s roughly 6:27pm MST and I continued through my list. M55 is a nice bright glob tonight. I get down and peer through the star pointer and gauge which section of sky I’m looking for and stand up, put the bino’s to my eyes and with very little searching I found M55! Next was M25, not sure I found that with my binos really. Then I was at M18, M17, M16 all three were lovely. It was roughly 6:48pm by then. Because I was mainly looking for nebulosity I didn’t try these three with the 10x50’s. I’m sure i should have. I catch a glimpse of M76 when I thought I was slewing to M16 in the prior group. I thought, what a waste of battery power. I looked at it briefly, and slewed back to the object on the list, M16. Next was M11 which I then found with my 10x50’s. A nice little dusting of stars in the binoculars! Following that was M13 which gave a particularly clear view this evening. I have been looking at star charts for quite a while now, and I have something of a photographic memory (comes in handy during band practice!). So I used the star pointer to give me the section of sky. This section of sky is really hard to look at and not loose your dark adaptation. I use an eyepatch and a black t-shirt pulled over my head backwards as a hood to keep stray ground light out. But trying to find something in the sky and star hop to M13 seems really not doable to me. However, the star pointer does show me where M13 is and I find it easily between Eta and Zeta Herculis. Just southwest? Of Eta Herculis. Now, this is the cool part. Because I’ve looked so often at the Hercules constellation, I had a good idea that you just went back to Eta and then you could find M92 between Eta and Iota Herculis. Slightly more than halfway. And there it is, a short star hop after finding M13, I find M92 without the telescope helping me. From a star chart in my memory. Awesome. Emboldened by this additional object added to my list of things I’ve seen with my 10x50 binos, I went back to Cassiopeia and hunted around there using the 10x50's to look for NGC 663 and NGC 7789. I definitely see NGC 663. I find M45, Hyades, Aldebaran, I use Delta and Gamma Cas to point me towards NGC 884 and NGC 869 aka the Double Cluster. As always, it is beautiful to see. I really like the 10x50’s. Really looking forward to the 20x80’s I’m getting next. Next I aimed my 8SE towards M57. I tried to see that with my 10x50’s but couldn’t. I thought I did but couldn’t confirm it. About 7:30pm MST I slewed over to M56. This is a nice Globular. Bright, granularity, some individual stars. Very nice. I go for this one in the bino’s and there it is! At 7:39 or so, M27 was up in the 8SE and i tried for that with the 10x50’s and I do believe I found that as well! M71 right after that, and yes, I did in fact use the 10x50’s on this object and found it as well. From M71 I found the Coathanger Cluster. So there are a couple new, easy to find (i think) objects M27 and M71 between Deneb and Altair just south of the coathanger cluster. I’m sure I can do better at star hopping but this is a lot of fun making my 8SE actually teach me something. M29, the cooling tower, very nice in the scope, very not found in the bino’s. I’ve been looking for this object in the binos for a while. It’s pretty easy to know where it is, there all close to Deneb and all. It being just south and above of Gamma Cygni. But seeing the cooling tower in the 10x50’s might be impossible. Maybe the 20x80’s. I went on to M15 around 7:43 pm MST. Very bright! Wow, this is amazingly bright! I handily found this in my binos as well!. M2, M73, M72 all found first by the 8SE and then by star pointer to my binos. Right at 8:00 pm MST I saw M30 on the list. I know this is a new object. So my crazy memory tells me. So i slew to M30 and gaze upon its beauty for many minutes in the 8SE. I find it easily in my binos with the help of my telescope. Last couple objects on the list: M77 - 8:09 pm MST this is only visible by slewing the telescope and introducing motion. I did not find it with the 10x50’s. M76, which was given a glimpse earlier was not findable by my lazy, about to call it a night, eye. The temperature was 36 degrees and my hands were beginning to hurt from the cold a bit. The thought of going inside and playing guitar instead of freezing in the somewhat stout wind (6 or 7 miles per hour) is probably why I couldn’t find the little dumbbell nebula. I see one object on my list from that night I skipped. M34. It keeps getting on the list then falling off at the last minute… it’s still early in the season for that object though. Although I didn’t even stay out long enough to see Orion coming up (over the tree). I thought to myself, as I packed things up around 8:20pm MST, that was a pretty short session. But it was action packed with lots of new bino objects found! Tonight (11-14-17) the transparency is “transparent” it is supposed to be cloud free but the seeing is bad (1/5) to poor (2/5) and 20 mile an hour winds. So no star gazing with anything but Binoculars in a parka on a zero gravity chair for me tonight. I'll let you know how many of those new targets I can see tonight. Pretty sure I’ll be able to find M13 and M92. M27 and M71 will be trickier But I think I can find M30 again. I'm going outside to try in a few minutes here after I post this.
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- coathanger cluster
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Tonight was the best night out in a long time. The last couple of days the sky has been crystal clear, and today is friday, which meant nothing was on the schedule for tomorrow. Scope, filters and eyepieces: Today, I was using my one and only Skywatcher 10" dob, with my collection of explorer scientific 82 degree eyepieces. For the first time in a long time, I also used my CLS filter. Targets/observing: Before I headed out, I decided to have a look at skysafari 5 to see what I should have a look at this clear evening. Tonights list ended up including: M13 M92 M57 M27 M13 looked fabulous as always, but I can't quite bag the propeller. I was resolving stars nicely, even a couple in the center, when using averted vision. I think M13 looks the best at 136x and sometimes at 255x, however most of the times I think the image is too dark when observing at 255x. M92 was a surprise. Locating it was surprisingly easy, as I through the finderscope could just see it as a little faint dot. Looking at it through the scope was amazing. It was not as big as M13, but at 136x it looked very nice, and sometimes, it almost looked like the stars formed a smiley:-) Surprisingly I was also able to resolve a good amount of stars in this cluster, but not as many as in M13. Now I know this wasn't on the list but I thought I had to give it a go when I saw it on skysafari. NGC6229! Also located in Hercules, and via starhopping also easy to find. This was the smallest one of them all, but the most rewarding since this was my first object from the New General Catalogue (NGC). I was also using 136x at this target, because this is the most comfortable magnification in my opinion. I was only resolving one or two stars in this target, but it was easily visable, just as a bright smudge. M57 is by far my favorite object (out of the few objects I have seen). The contrast and shape of it gives me the WOW feeling everytime I observe it. Now this target I was observing comfortably at 255x and it looked amazing! Now this was where it popped in the CLS filter which almost made it look like the red outer-part of the nebula was visable, but this faded soon after. While observing this target for about 20min I was thinking if a UHC or a OIII would give me better or the same views? M27 was kind of disappointing, but I just think I have overestimated how it would look like, but it was still a very nice view it gave me at 136x and 85x. The dumbbell shape became more visable over time, but I think the thing I like more about M57 compared to M27 is the contrast between sky and nebula. In the end it was one of my best nights I have had with my new (5 months old) scope. I have yet to try it at my grandma and grandpas' where the milky way is visable, and I am very excited to do just that. Clear skies! Victor Boesen
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Sadly, this project is currently stalled by the atrocious weather but at least I have had one uninterrupted night of imaging to start the ball rolling! I'm aiming for a bi-colour rendition combining Ha and OIII data at 3nm. I have a lot of data capture to go but it's a fair start. Image Stats Mount: Mesu 200 Telescope: Sky-Watcher Esprit 150 ED Pro CCD Camera: QSI 683 WSG-8 Sampling: 1.04”/pixel Guiding: OAG/LodeStar Filter: Astrodon 3nm Ha Exposure: 10 x 1800 sec Date: 31/07/17 Calibration: Bias, Darks & Flats Full Frame Cropped Frame
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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! -
Hi all This one was processed using Ha as monochrome Luminance layer. Ha 2x15m 2x10m 31x5m, binx1, 3h25m integration time RGB 5x5m each, bin1, 1h15m integration time, altogether 4h40m. Andy
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Hardly any data on this because of the weather mainly sorry. Anyway i did catch :- Ha - 60 mins O3 - 70 mins C8 @ f6.3 AZEQ6 Atik314L+ Couldn't really process anymore out of this, more data needed yet again. Not brilliant but i am happy to have caught the detail i have. Hope you like it.
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I have fallen out of the habbit of getting the scope out regularly over the summer and spring, partly because I've had so much going on this year and also because of the lighter evenings. However yesterday I had noticed it was going to be clear and so when the Mrs headed off to bed I made my excuses and went downstairs to get the scope out. I've lent my 127 mak to a friend and so I was using my 150p Newtonian on an AZ4 mount. As I was setting the telescope up I remembered that it was the Perseid meteor shower, so I grabbed the 10x50 bins and a hoodie and sat down on a deckchair to see what I could see, by now it was about 10:45. I fiddled with the planisphere for a minute or two, swept around with the bins and settled back to let my eyes adjust to the relative darkness. I was soon rewarded with a lovely coloured flash heading roughly north south, this was followed by couple of smaller ones which I half saw. From my back garden location east of Reading the sky appeared darker than recent nights, although I'm afraid I didn't work out the naked eye limiting magnitude, I must get into the habbit of doing that one day. The transparency was abnormally good and I could see hints of the milky way running overhead, which is rare indeed and I could see stars much further down to the southern horizon than normal. After about 20 minutes of watching for meteors I was getting a bit cold and got up from the deckchair to have a go with the scope. As I got up there was a very bright pass of the ISS I think it was 23:03 to 23:05 I thought to look at my phone after it had faded to note the time. I managed to grab the bins in time to get a good look at it. I lined up the scope using the telrad and 10x50 finder on M11 (one of my favourites), and when I looked up as I moved around to the eyepiece and there was another bright perseid I had caught a look at M11 last week, but this time it was clearer and the background darker, using the 15mm eye piece dark patches clearly visible among the stars that make up the cluster. Last week I tracked down M27 in Vulpecula, something which I had seen before but not properly appreciated at the time since it was just something I raced over using my 127SLTs goto function when I first got it. It had taken me 10 minutes or so to find last week, so I was pleased that with the remembered orientations of the main stars in Vulpecula through the 10x50 finder I was able to locate it in a couple of minutes this time. I found the 25mm eye piece to work well on M27 this time, at lower magnification it seemed to have a little more defined shape than when I used the 15mm before. Sadly it was a "school night" and I'd not planned the morning off or started earlier, so I knew that I'd better try and be in bed for 23:30. I quickly swung the scope around to have a look at M13 (I think I prefer the view of M13 through my 5" mak rather than my 6" newt), then packed up and headed in for the night to write my notes and go to bed. Unfortunately my mind was buzzing too much from the great ISS and perseid show to get to sleep quickly and the Mrs far too asleep to be interested in hearing about it. I'm now looking forward to getting the scope back out again soon. Tyr
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M27 or Dumbbell Nebula taken on 3 July 2014. A second attempt as the first was thwarted by dew on the lens and the sky getting lighter. 98 x 15 second exposures at ISO 6400 and 42 dark frames. Processed in Deep Sky Stacker, PixInsight and Photoshop CS6.
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When I first started imaging, I used to spend a lot of time on M27. My wife used to complain saying; "Not that rotten 'Apple Core' again!". But planetary nebulae are my favourite DSO targets, they just fascinate me. Here's some data I gathered at the end of a session, just 2 hours worth of Ha in 20 minute increments using my C11edge and Atik 428ex binned 2x2. I have added in some false colour (Ha+Oiii) from a couple of years back taken with an MN190. There's still a few more of these images from last year tucked away in my PC, i'm trying to clear them out before starting any new images... Thanks for looking. Tim
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From the album: DSO, Nebula, Galaxies, Comets etc
M27 The Dumbbell Nebula in Vulpecula Imaged on 17.09.2016 using Skywatcher Equinox 80 ED Pro and Atik 16IC-S monochrome CCD camera 8 x 300 second and 8 x 420 second exposures stacked in Deep Sky Stacker and cropped with light processing in PS Elements 11© vicky050373
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From the album: Deep Sky Objects
My first attempt at narrowband imaging. For more detail the astrobin link is: http://www.astrobin.com/254346/C/-
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From the album: Photos from Bury
The Dumbbell nebula (M27). Processed using DSS. Hardware details: Camera: Canon 600D. Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 40 x 3min at ISO 800, Darks: 20 x 3min 0 sec at ISO 800 (from dark library), Lights and darks separated by 30 sec intervals. Flats: 50 x 1/50s at ISO 800, Bias: 50 x 1/4000 at ISO 100 Date of capture 05/06/2016. Atmospheric transparency was good. Auto guiding was stable. I increased the saturation by 25% and manually aligned the colour channel histograms. I stretched the red colour histogram more than the green or blue to increase its contrast. The 600D is astro modded so does pick up H alpha in the red so the result is far better than the old D200. 2x drizzling was done on this stack.© D Elijah
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From the album: Photos from Bury
M27 the Dumbbell Nebula. Processed using DSS. Hardware details: Camera: Nikon D200. Telescope: SW Evostar 120 with Baader UHC-S filter. Mount: AZ-EQ6 guided using a ST80 synguider. Image details: Lights: 21 x 3min at ISO 800, Darks: 20 x 3min 20sec at ISO 800 (from dark library), Lights and darks separated by 30 sec intervals. Flats: 40 x 1/40s at ISO 800, Bias: 30 x 1/8000 at ISO 100 Date of capture 30/04/2016. Increasing cloud stopped imaging after about 1 hour, some wind, seeing was reasonable. Guiding was not great in RA but fine in DEC, PA was ok - I think I might have knocked the scope at some point in the night. I increased the saturation by 20% and manually aligned the colour channel histograms. No drizzling was done here - it was crashing my laptop.© D Elijah
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From the album: DoctorD's Photos
M27 shot with SDC 435 x512 stack of 20 frames processed in DSS -
From the album: Deep Sky III
For my second attempt on M27, I used my new Esprit 150/10micron GM1000HPS combination (the result of the first attempt is in my Deep Sky album). This image represents about 10 hours integration. From a processing perspective, I decided to blend the Ha into both the Lum and Red channels using an Adam Block technique that I learnt through his "cosmic canvas" tutorial videos. Since the Ha is very strong and would obliterate the RGB information I decided to only blend a small amount into the red channel. Since I was interested capturing the faint outer halo, I decided to raise the level in this particular region. I was reasonably happy with the result - you can just about make out the outer halo, star colours are reasonable and you can see some inner structure to the nebula. LIGHTS: L:9, R:10, G:8, B:7 x 600s. Ha: 8 x 1800s. DARKS: 30; FLATS:40, BIAS:100 -
From the album: Deep Sky
Acquired in June 2015 whilst setting up my new obs. At the time, I couldn't figure out how to process the image, so the data had been been waiting for my PS skills to improve. In Dec 2015 I decided to have another attempt, however, this time I decided to try processing the star layer separately from the nebula. I also decided to change from using Maxim DL for the calibration and stacking to CCDstack2+, mainly because I've been impressed by the data rejection results of CCD stack. I also decided to separately stack the RGB channels from my OSC to see if this would improve matters. LIGHTS: 27 x 300s; DARKS: 30; BIAS: 100; FLATS: 40 all at -20C. -
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Cloudy tonight so just having a look at how to find stuff easier next time . I made these for M27 and M56 ...
