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Found 42 results

  1. More Liverpool Telescope data I am afraid, but what should a Swede do when the sun has decided to make the nights into twilight this time of the year? For those that may have missed it the Liverpool Telescope is a remotely controlled 2 m RC scope on a mountain top on La Palma, Canary Islands. This image contains more Ha data than most of the others I have processed, which helped a lot to reveal the outer shells of this famous planetary nebula. This is a HaRGB image while most of the other high resolution images of the Ring that I have seen are narrow band images, which may make this one a bit special. The big galaxy is IC1296 and there are a lot of faint fuzzies in there for which I have no names or numbers. Filters and exposures used: sdss-r 17 x 90 s Ha 15 x 120 s (mixed 50:50 with sdss-r for red channel) Bessell B 21 x 90 s (blue channel) Bessell V 16 x 90 s (green channel) So totally 1.85 hours of data stacked in Nebulosity 4 and processed in PS CS5
  2. 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
  3. From the album: DSO, Nebula, Galaxies, Comets etc

    Image taken using Canon 100D and William Optics FLT-110. Single 30 second exposure with slight processing in PhotoShop Elements 11

    © Vicky050373

  4. Hello all Just thought I was post a couple of pictures from a complete newbie. Hope you like them. http://www.astrobin.com/users/gerald%40evans/ Kind Regards Gerry
  5. Firstly Happy New Year everyone! Afraid I'm far from a frequent poster here on the forums, my last deep sky image through a scope was a DSLR image back in March 2012 ... around the time I stopped using film ... better late than never. Since then I have just made the move from DSLR to CCD during Spring 2015 and thought I would share my first finished effort, image files have been in my computer since September ...just a fun experiment to see what could be resolved along with image scale, the image scale is 100% but cropped very slightly due to stack overlap so about 95% of total sensor area. Colour wise this is my first LRGB aiming for rustic/teal which I feel is more natural ...rather than red/blue, also trying to retain subtle detail as best I can at this FL. and limited number of subs, thanks for looking, details below. APM 175mm Refractor (barlow to FL 3780mm)Atik 414EX (mono) at -20'C / Bin 1x1EFW-2 Astrodon E-Series LRGB filtersMultiple exposure between 15s & 300secsSequence Generator ProDeep Sky StackerPixinsightCS6 ExtendedM57 Ring Nebula NGC6720 by Mike Dickson, on Flickr
  6. Evening everyone , Does anyone know the magnitude of the faint star just outside the Smoke Ring of M57 . Before the clouds rolled in tonight I was trying a new ES 8.8mm in the 200P and M57 looked really well at X 136 magnification , then the thought occurred to try it in the X 2 Barlow which gave a magnification of X 273 and , lo and behold , the Nebula was still clear but this time I could detect a faint star just outside it ( about 1 pm position ) Initially , the reason for trying this high magnification was to try and see the faint centre star but this was not possible tonight ... If I knew the magnitude of the peripheral star compared to the central star , then I`d know if it was possible to see the central star at all ( maybe in darker Winter skies )
  7. 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
  8. Hello SGL , this is my first new topic and it is in relation to M57 in Lyra ... I have tried to see this Nebula in different scopes since starting " telescope astronomy " a couple of months ago but to no avail so far ... Might it just be the time of year with no truly dark skies in Midsummer ? I have had much more luck with DSOs in the form of star clusters , like for example the M29 in Cygnus last night while trying to find the Nebula near by ( again to no avail ) ... The equipment used last night was a Meade Infinity refractor 90mm 600mm f/6.7 and a 40mm Plossl for wide field views .
  9. This cropped image taken on July 2nd 2015 is part of a series of experiments in testing and using a guided telescope in order to achieve longer exposures and lower ISOs. 17 x 1 minute exposures at 800 ISO 10 x 2 minute exposures at 400 ISO 1 x 8 minute exposure at 100 ISO 11 x dark frames 15 x flat frames 66 x bias/offset frames Processed in Nebulosity and Photoshop
  10. Hi all! Yesterday good weather, so had my first go at drift alignment with my new reticulated eyepiece. I took my time to figure out well the various steps in the right order, etc... At one time, pointing a star in the east, I think I overdid the correction on the Altitude, because the star started drifting a lot, so I started again from the beginning... As always a learning curve! :-) But I had fun doing it. It took me a lot of time, but finally I got to shooting some subs, and these are the results: M57 @ 38 second subs: M13 @ 63 second subs: The usual coma problem is visible, but I am nevertheless quite satisfied with this first try... The stars look pretty good, if not enlarged too much ;-) Opins? Any feedback would be appreciated! Gerhard.
  11. First time on this one and I knew it would be small, but this is still a wide-field having been cropped.. so still saving for the Hubble... My second of 3 Planetary Nebulas I've been chasing this weekend... M27 The Ring Nebula. Using the ED80 with the 314L+ 5 x 600s each of RGB The surface brightness of this seems quite high. I kept blowing the core right from the start of stretching so a bit of compromise trying to retain the colour. I'd love to be able to get in close on this... ah well... maybe one day. As usual, any helpful critique always welcome.. thanks for looking
  12. First time viewing and photographing this object - think I've found a new favourite to observe! My day was filled with heavy rain and whilst the sky did mostly clear, lightning could be seen in the distance and a mist left me with extremely condensated equipment, to the point where my laptop hit a BSOD with the mouse no longer functioning - so crossing fingers that after 24 hours of drying, it will be fine! The next time I attempt this object, I feel a nice 2x barlow will be in order, or even perhaps a 3x.
  13. Toxophilus

    M57 - RingNebula

    From the album: Deep Sky Objects

    A prime focus RGB image of the ring nebula M57. I had hoped for a better result but I seemed to have focus issues all night. If I really stretched the luminescence sub-frames I started to pickup details of the nearby faint spiral galaxy IC1296. For more detail the astrobin link is: http://www.astrobin.com/267930
  14. Image of m57 captured in Zagreb on 27th of April. Telescope: Sw Mak 102/1300 Mount: old black Eq6 Camera: Canon eos 700d unmodifed Exposers: 62*20sec
  15. The Ring Nebula on not-as-clear-as-forecast night in London. M57 was the best available target to image through the murky sky but it's come out much better than previous attempts. 17 x 4 minute exposures at 800 ISO 3 x 8 minute exposures at 400 ISO16 x dark frames10 x flat frames46 x bias/offset frames92 minutes total exposure timeGuided with PHDProcessed in Nebulosity and Photoshop
  16. Since my single sub RGB post http://stargazerslounge.com/topic/241967-m57-in-10-mins/ I've managed to gather a few more subs with ACP managing to take advantage of some early morning clear skies at the end of runs on other targets for me while I get some sleep Having a play with the data in PI it's come out like this so far. I fancy having a serious go at this some time without the FR or a longer FL scope as it's tiny at best. Had to crop in a bit to clean up some first of run subs that weren't framed too well. 5 x 600 L 7 x 600 R 6 x 600 G 6 x 600 B
  17. One of my favourite planetary nebulae, the Ring Nebula (M57). Imaged on April 16th 2015. 50 x 30 second exposures at 3200 ISO plus nine dark frames and eight flat frames. Processed in Deep Sky Stacker and Photoshop CS6.
  18. This is the result of my first attempt at narrowband imaging with a OSC CCD. I used the QHY8L and a Baader 35nm Ha filter (not quite narrowband - more like moderately narrowband). The image is the result of 10 x 300s standard RGB exposures with 3 x 1800s Ha exposures, binned using the 'low noise 2x2 bin' feature of Nebulosity 3, and added as a luminosity layer in Photoshop. I am a little disappointed that the outer halo didn't show up but I guess that is the limitation of using a OSC CCD with only 25% of the incoming light being captured. It may also be down to the broader bandwidth of the 35nm filter. However, adding the Ha does show up a little more detail in the nebulosity that my standard exposures, so it was a worthwhile experiment although I won't be forking out on a full set of narrowband filters just yet.
  19. One of my favorite planetary nebulae is rising in the northeastern sky (above that big oak tree)! The ghostly M57, the Ring Nebula, approx. 2300 light-years away and between 6,000 and 8,000 years old (when the outer layers of the parent star exploded), shot on the Orion Starshoot Deep Space Camera II (at maximum sensitivity setting in color) through the Orion StarMax 127. Original music: "Apochromatic (dub version)". Enjoy! Reggie
  20. This was just a test target at the end of last nights automated run. I wanted to see how it looked in the SCT. However, I thought it worth posting for an idea of FOV & what you can expect for a single 10 Mins sub each of RGB on a C925 with a 314L+ At this time of year it's in my "cleanest" part of the sky but only accessible for me in the last half hour before dawn.. hence 3 x 10min subs. Ignore the hot pixels as no stacking involved obviously, it's almost full frame apart from cropping the edges. It's still a small target & to do this properly I'd remove the reducer as the Moonlite pushes the backfocus quite a way too. That'll have to wait till dark skies return next autumn.
  21. Lovely skies here last night until moon rise, but still suffering some tracking problems with the HEQ5 and I gave up on guiding after a brief trial of the new PHD2 beta. However, managed to catch some reasonable data on M57 & M27 with unguided 30 sec exposures and have binned the worst of the star trails. Lot more processing on this in Gimp2, now I've discovered the GMIC tools - even some deconvolution for Nick (though without PSF). Even managed to stretch out a little glimpse of IC1296, which given the size and magnitude is pretty good going with this camera! Despite good transparancy the seeing wasn't great - though still better than my previous attempts at this nebula.
  22. Hello First passage in this section with three nights of test with the QHY5III-178m in deep sky. Target : M57 I made the images and the first treatments but one of my deep sky specialist colleagues Christian Dupriez (http://www.astrosurf.com/chd/) made the most of these images and even colorized. First night : 5 july 2016 bin2 : One of the film : And Christian's treatment : Second night : 29 july 2016 : Bin 2 Christian's treatment at 150% : And his colour version : Last night : 04 august 2016 bin 1 Film's one : Final Christian's treatment and colour with a reduced HST version : Click on images to full resolution. Clear skies. Luc
  23. Imaging the Ring Nebula was an old dream, so finally being able to do it was a small but significant pleasure! I am glad I even captured a reddish outer rim. This was the last DSO I imaged on 2016-05-04, and for me also the last DSO in this season, as the sky does not get dark anymore until mid-August here (see even the bright background in the picture). I did many experiments trying to find the right combination of sensitivity and exposure. I ended up using all images I took, with a total of 21 lights and 5 darks. Exposure mixture: 13 at 1600 ISO, 8 at 800 ISO; 11 exposures at 10 seconds, 5 at 8 seconds, 3 at 15 seconds and 2 at 5 seconds. RAW files processed in UFRaw and GIMP, stacked in Registax and final touches in GIMP. No flats, no bias. Still learning those steps! System as usual: Nikon D40X with Baader MKIII coma corrector at the primary focus of a Skywatcher 200 PDS (200 mm f/5) Newtonian, mounted on an EQ5 dual axis equatorial mount. Clear skies!
  24. The Ring Nebula in Lyra; one of my favourite celestial objects and one I look forward to every year. Not only is it bright and colourful, this beautiful object is a perfect example of what will happen to our Sun in a about four billion years. If you look closely you can just see the white dwarf in the centre. 12 x 8 minute exposures at 400 ISO 11 x dark frames 10 x flat frames 21 x bias/offset frames (subtracted from flat frames only) Captured with APT Guided with PHD Processed in Nebulosity and Photoshop Equipment: Celestron NexStar 127 SLT GoTo AltAz mount with homemade wedge Orion 50mm Mini Guide Scope ZWO ASI120 MC imaging and guiding camera Canon 700D DSLR
  25. Ring Nebula in Lyra (M57)...a planetary nebula 2,300 light-years from Earth. This is an experiment to see how feasible it is to capture deep sky objects using the ZWO ASI120MC camera instead of the Canon DSLR. The advantages in doing so are getting larger object because of the smaller sensor and not wearing out the shutter of the DSLR....the disadvantages are a much lower resolution and a more grainy image with little extra detail (again because of the smaller sensor). Just like with the experiment in using a Barlow lens with a DSLR to image this object, the conclusion is that it's probably better to crop a larger, hi-res image but I wanted to know if this was possible and what the quality would be like if it was possible. Apart from the difficulty in finding the object with such a small sensor, the process was fairly easy with fewer of the problems that cropped up with Barlow experiment. And the result, though a bit grainy, does show some previously unseen details like the nebula's distinctive shape and the white dwarf in the centre of the nebula. 3 x 45 second exposures 33 x 20 second exposures 37 x 10 second exposures 17 dark frames No flat or bias frames Processed in Nebulosity and Photoshop.
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