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Found 59 results

  1. Hello, Probably should not post this, as not really that great, but wanted to share an attempt at M13 using Afocal photography. I have been messing around with this and my starting equipment for quite a while, and have had some nice pics of the Moon and Jupiter, yet last night I got a bit wound up with Mars, so thought I would point at M13 and see what happened... Was not really expecting much to be honest, but was quite surprised. the shot below is a single 2.5 second exposure (ISO1600) using a Sony Cybershot in a Baader digiscoping bracket, through a TAL 25mm Plossl in a TAL 100RS on a TAL GEM EQ (read wooden manual tripod and mount). Now I know it has star trails, but was quite taken with it. I am saving for my planetary imaging rig......but you never know...this DSO stuff is quite interesting... Thanks for looking anyway.
  2. M13 photographed during 2 consecutive nights (17/18 May). Telescope: TEC140 Camera: QSI583WS Luminance: 19x300 and 10x600 R,G,B: 12x300 each You should really look at the full resolution to see it in it's full 'glory'... Full resolution
  3. 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.
  4. Hi all! Few days ago i tried imaging a deep sky object for the first time, so i tried m13 as an easy first target, I used took 7 lights, out of witch i selected 3 for stacking, and used 5 darks. DSS only selected 1 frame out of the 3 and stacked that. The result wasn't that good but then again....it's the first time i'm doing this. Settings were iso 6400, 15 second exposure, auto WB. I have also been having this problem, when my telescope slews to a target, it's always to the left of the frame and that was a bummer since i had to crop my picture. Please give me your advice and feedback, Clear skies!
  5. 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
  6. 10 420 second lights 4 darks 20 bias stacked in DSS and tweeked in PS5 and LR4 your thoughts please.
  7. Having barely enough time to let the ink dry on my last report, here's another from last night. Having missed my opportunity last night, I found an angle to view Corvus through a small gap in the foliage, target:- the Antennae galaxies. This pair were reasonably easy to locate and have a high surface brightness (well, for galaxies). Unfortunately their low elevation was a big hinderence. My semi-rural skies did allow me to see the subtlest wisp with a little persistence but it is impossible to be sure what part of the Antennae that was. This presents me with a small ethical dilemma, namely what do I record in my notes. I most probably saw the brighter interacting area but could only see one 'fuzz' and was nowhere near separating the pair into identifiable elements. The brighter of the pair is NGC 4039 (Caldwell 61) and at the moment, I am going for that option with a caveat in my notes. If I had have been able to discern a heart shape or something similar, I would have entered both. Any ideas? My next target was far less controversial. NGC 5248 (Caldwell 45) was identified by starting at Epsilon Virginis and heading just over the Bootes border. Another subtle and soft galactic radiance but easier to see than the previous object. With a low Southeastern horizon (down to five degrees or so) I next revisited M107 which I have only ever had a fleeting glimpse at. As part of an unmistakable asterism to the South of Zeta Ophiuchi, it is easy to find but once again its poor elevation meant that I was just about able to see it using all the usual tricks. My final challenging object was NGC 5363, a galaxy to the North of Tau Virginis. This was the easiest of the new finds in the session. Fed up with looking at inconsequential blobs, I thought I would turn my attention to more rewarding objects. Given both were now favourable, I did a comparison of M5 in Serpens with M13 in Hercules with the 8mm X-Cel. In my opinion, M13 is the slightly more rewarding to view. I was able to resolve more stars and the Herculean glob seemed to be slightly less uniform and show hints of star chains, as opposed to a large fuzzy ball with some resolution. My only additional comment on M5 was that I though it looked very very slightly elliptical. I finished up with Saturn in the 5mm X-Cel, which is presenting itself in a very aesthetically pleasing way at the moment. Titan and Iapetus were very obvious, Rhea (betwen Titan and the planet) could occasionally be seen directly and Tethys just about peeked through the glow with some technique (moving the planet out of the field of view worked a couple of times). Viewing the moons really highlights just how much poor conditions alter what is possible. Iapetus at magnitude 11.2 was almost a clear as Titan in the outer glow of Saturn. Rhea (at magnitude 9.8) was quite tough in denser planet glow and Tethys (at magnitude 10.3) was only just possible in similar glow, the other side of Saturn. Keep those clear nights rolling! ____________________________________________________________ Observing Session: Friday / Saturday 2nd / 3rdMay 2013, 22:35 hrs to 00:25 hrs BST VLM at Zenith: 5.2 New - Revisited - Failed
  8. 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
  9. Globular star cluster M13 in the constellation Hercules at a distance of 25,000 light-years and 145 light-years in diameter taken from Kielder Spring Starcamp 2012. 5" Takahashi Refractor Pentax K5 iso 800 x5 375sec exposures with extender. Deep Sky Stacker No Flat Frames No Dark Frames (Quick & Dirty) M13 by mikeyscope, on Flickr
  10. From the album: Starchasing

    One of my best images of M13 so far!

    © GALAXY CENTRAL

  11. From the album: Photos from Bury

    M13. I stretched the original Tif 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: 55 x 3min at ISO 800, Darks: 20 x 3min at ISO 800, Lights and darks separated by 1 min intervals. Flats: 40 x 1/40s at ISO 800, Bias: 30 x 1/8000 at ISO 100 Date of capture 13/03/2016. Conditions: Clear sky. Seeing was good. The guiding was good, most frames were usable. The wind was moderate but not affecting the scope much. Processing was done in DSS. I increased the saturation by 25% and aligned the colour channel histograms until the dark signal at the edge of the image (the darks were not quite cancelling the dark signal) was the same as in the original photos. The extra light subs have noticeably improved the sampling for the green channel.

    © D Elijah

  12. M13 - Great Globular Cluster in Hercules from 06/09/2018 22,180 light years away, 145 light years wide Quite a close crop on this due to its scale in my scope, but happy nonetheless. Looks like better flats are definately helping me out now when it comes to processing. The only thing I couldn't work out is the faint fuzzy at around 2 o'clock. With a bit more research it looks like it is the spiral galaxy NGC6207 (distance 30 million light years) - and VERY faintly you can just make out IC4617 (489 million light years away) TS65Q / Modded 1200D / EQ6 Guided - 83x30s

    © 2018 S Fields

  13. First night in back garden for what seems like forever, had an interesting session. Set the C8 on Jupiter while I dabbled with the star adventurer mini / Nikon D5300 / 105 2.8 macro. Tried too many things as failed miserably on focus with the D5300, Jupiter was just clearing neighbours roofs ... Got quite disheartened by 3am so took cameras off and had a peak at M13 before packing up. Absolutely beautiful ! C8 with ES 14 mm. Thought I'd try imaging it but only had the Nikon with William optics flattener attached ... Managed 20 x 15 seconds as hadn't polar aligned for Jupiter. Good luck all with opposition on the 8 th
  14. Taken on 27-05-2017 It could be called work in progress, but not sure if I'll be finishing it, still don't have RGB filters, and I'll probably not going to get them in time to complete the image this year (maybe next year, but really, in my opinion this target deserves up close and personal focal length). I was actually waiting for some bits and pieces to give this camera proper first light on RC8" (I did try it out in this combination, kind of, but due to technical difficulties no subs were recorded in previous session), but could not resist clear night on a weekend, so I paired it to TS 80 Apo to try it out. I'm actually really amazed with the result. There are couple of issues, like a bit of astigmatism in the corners (probably due to not getting distance between camera and FF quite right). Also there are reflections around stars (not processing artifact, this is probably due to filter placement). Data: 120 x 1m Lights (2 hour total), x256 Flat / Dark Flat, x64 Dark, taken at -20C, Gain 139, offset 25 Equipment: TS80 F/6 Apo, TS FF x0.79, ASI1600mmc, Hutech IDAS LPS P1, TS60 F/4 guide scope + ASI185 + ZWO IR pass filter (guided in IR only), HEQ5 belt mod + tuned. Software: SGP for capture, ImageJ for calibration, align and stack, Gimp 2.9 for curves Conditions: LP red zone, good transparency, average seeing Image is presented in full resolution / no binning or crop I did not do any noise reduction, but there might be some slight softening due to using .jpeg. Also no sigma clip for this version (hence satellite trails, it was a busy night ), I'm yet to figure out how to do it with such a large amount of data in ImageJ (calibrated set is 7.4GB, and I only have 8GB of ram, so need to figure out how to split it to do it in chunks). I think this camera is awesome, I honestly did not expect this number of background galaxies to pop out in just 2h with 80mm scope (certainly not from red zone). As always, comments and critique are welcome. Thanks for looking.
  15. Hello all, Last night it was clear so I spent some time on M13. There's something that I don't like at my 130 PDS, I have to figure it out, so I put the camera on the evostar 90/900. 3-4 minutes luminance 5s, ~40 minutes luminance 30s, 3-4 minutes each RGB 15s. I couldn't get more before the scope would see the window frame. Gain 300, cooled at -15C. Guided. Won't say more as I stayed all night up and since I woke up I'm processing data (other data too). I'm happy that tonight it's cloudy so I can sleep. Below is the final result. Clear skies, Alex
  16. Hi all! Yesterday evening I finally was able to have a success with my new setup. Since february / march I have been struggling with getting autoguide up and running, but due to various mishaps and lots of bad weather, I haven't been able to produce a single image, up until now. This is what came out: M13. As you can see the stars are not very clean... So guiding apparently wasn't as good as hoped for... I also used flats, but there still is a bit of a gradient, but a lot less than previous. These are 180 sec exposures at 800 ISO, so I guess I have to be at least a little bit happy with this result, because without autoguide I could go up until 90 secs, approx. Any thoughts on what can influence good guiding? FWHM was around 5, so not perfect... maybe that could be better, but I never seem to be able to go below those numbers, and often in the past it was way higher... yesterday morning I wanted to set the focus point on the guide scope, so I pointed the moon during the day, and focussed it as best as possible, and marked that on the scope. this night, focus was in fact very close to that mark. But FWHM says it wasn't perfect... I also did drift alignment beforehand, and the guide error graph in Maxim was pretty nice, after initially having to redo the calibrate, because "guide star faded". There were no clouds, however, and the images from the guide scope showed good clear stars (I use a dew shield on the guide scope)... Any idea what this could indicate? I collimate every time, so that should not have been a problem either... Any thoughts much appreciated!! :-) Gerhard.
  17.   Observing Information DSO - M13,M52 Date - 15/08/16 Time - 00:30-01:30 Lunar Phase - Waning Gibbious 79% Luminosity Seeing - Excellent Equipment - Celestron Nexstar 6SE, No filters used Eyepieces - Pentax SMC 8-24 Zoom Eyepiece. M13-17.5mm, M52-24mm. Additional info - What a beautiful night of observing, I purposely chose 2 targets furthest away from the moon and found they offered some really good detail especially M13. The longer I observed the more stars and structure it yielded, I honestly could have spent another hour adding to it but felt with the moon being so bright I wasn't going to get much more. M52 was another object enough away from the moon to show some lovely detail and I was impressed with how many stars I could observe and how many levels of brightness and detail in the stars I could discern, it really was a challenge but I loved every minute ? I hope you enjoyed viewing my sketches as much as I enjoyed sketching them Clear skies ???? Richard
  18. Second of my attempts at RGB (rather than LRGB) imaging of globulars in bright moonlight and again I am pretty pleased with the outcome. I imaged M3 in my earlier post binned 2x2 in each channel but decided to try M13 unbinned so what you see below is imaged at a plate scale of around 0.46 arc seconds / pixel. If we get any more clear nights in the near future I intend to re-image this object using an Astrophysics 0.67x reducer to see if there are any major differences (other than the obvious FOV) at a larger plate scale. Minimal processing - just stretching and a little sharpening in PI. The PI Masked Stretch process works very well with globular clusters IMHO bringing out the fainter stars without blowing out the core. 12" TS/GSO RC at F/8 on a Mesu 200. Atik 383l+, AtikEFW2, ATIK OAG, Lodestar X2, Baader 36mm filters R=B = 7 x600s, G = 5 x600s all un-binned. Click on the image and then select "Full Size" if you want to see the full detail :-) Comments Welcome Derrick
  19. 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
  20. I added a sub, toyed with the luminance a bit and generated this: You can see more stars near the core, a more present image overall. I'm stoked Clear skies, Reggie
  21. vlaiv

    M13 - spring 2016

    From the album: Astrophoto by vlaiv

    Equipment: ZWO ASI185 at prime focus of SW 8" F/6 Newton, HEQ5 (belt mod + bearings replaced & tuning), TS 60mm F/4 guidescope, QHY5IILc guidecam Data: 165x30s lights, 25x30s darks, no filters - full spectrum, resolution 0.64"/pixel Software: SIPS capture, PHD2 guiding, DSS stacking, StarTools processing Conditions: red zone but superb night - milky way barely visible at zenith, very good seeing, no Moon, no wind
  22. Bamo

    M13_0066

    From the album: Imaging Challenge #17 - Through the Eyepiece

    M13 Globular star cluster in Hercules Exposuer 20" ISO 16100

    © Bamo

  23. Vicky050373

    M13 30-04-2016

    From the album: DSO, Nebula, Galaxies, Comets etc

    M13, also designated NGC 6205 and sometimes called the Great Globular Cluster in Hercules or the Hercules Globular Cluster, is a globular cluster of about 300,000 stars in the constellation of Hercules. Imaged using Atik 16IC-S monochrome CCD and William Optics FLT-110 mounted on NEQ6 Pro. 30 light frames ranging from 60 seconds to 600 seconds, no darks. Stacked in DeepSkyStacker, using the best 80% of frames and processed in Photoshop CS2

    © vicky050373

  24. spaceman_spiff

    M13

    From the album: Photos from Bury

    M13. I stretched the original Tif 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: 30 x 3min at ISO 800, Darks: 20 x 3min at ISO 800, Lights and darks separated by 1 min intervals. Flats: 40 x 1/40s at ISO 800, Bias: 30 x 1/8000 at ISO 100 Date of capture 05/03/2016. Conditions: Clear sky with moderate cloud, often interrupting the imaging. Seeing was ok (but target was quite high). The guiding seemed ok on the night but quite a few images showed slightly elongated stars :-(. Possible bad calibration (too aggressive). The wind was very light so that was not the issue. Processing was done in DSS. I am trying to improve the handling of colour. I increased the saturation by 20% and aligned the colour channel histograms until the dark signal at the edge of the image (the darks were not quite cancelling the dark signal) was the same as in the original photos. This seems to work quite well (note to self!).

    © D Elijah

  25. Coco

    M13 Hercules Cluster

    From the album: Coco'c Mono LRGB

    M13 in RGB only, only a quick shorty as the sky doesnt get dark properly oop norf.. 4 minutes x 5 each RGB filter no LUM for globulars, ATIK 314L+ & APM APO
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