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Showing content with the highest reputation on 08/10/16 in Posts

  1. Never thought it would be possible to image this from my LP location and DSLR. Nikon D810A, 145x5minutes iso 800, TS Star 71, AZEQ5 m31v3 by Yves, on Flickr
    15 points
  2. Hey everyone, before i start i'd like to ask for as much help as possible. If you can offer advice and critique with solutions or process suggestions. I'll take it onboard and do my best to learn from what is offered. Now, that being said, this image is WIP and comes with a host of firsts. First time out in 3 months due to the unbelievably cloudy weather, First image with my home modded cooled DSLR and first horse of the season. NO FLATS, BIAS OR DARKS and 16 x 300 secs @ ISO 1600 with a temp of 12 deg C. Dew point was 15 deg C and ambient was 24 deg C. I can cool down to 0 deg C, but the hu
    12 points
  3. Usually autumns are very cloudy time here in Finland. This week I had 4 days of moonless and clear nights in a row. Here is all the images I took during these nights. 5th night was also clear but I spent it visiting other observatory near by. Here is bit of a "kid in the candystore" effect taking place. Longest exposure is on IC410, 3.5 hours. Rest are between 1 hour and 3 hours. NGC1499 is two panel mosaic. 1. B142 2. Bubble nebula 3. IC405 4. IC410 5. M33 HaLRGB 6. NGC1499 7. NGC6960 8. Iris nebula
    8 points
  4. I have done some nebula hopping (Western Veil, Cave, Flying Horse / Wizard and Crescent) during the recent clear nights 3 - 5 October. Now clouds are back and I post what I have got. All with the ES 127 ED apo and Canon 60Da on the EQ8 mount. About 3 - 4 hours of data except for the Cave that only got an hour. Should collect some Ha for them.
    8 points
  5. First completed image in over a year and a half. I've started a couple of other projects but with work and the UK weather I've not been able to complete them. Anyway 90mins in Luminance and 30mins each in RGB taken with my AG12 and H35 starlight xpress. Conditions were windy while capturing the RGB frames so not a perfect set of colour subs. Any comments welcome Worth taking a look at the full res....don't look too closely though as I have a very slight tilt on the camera Thanks for looking BTW just going off topic anyone off to the IAS next week?
    7 points
  6. Hi again I gave you some thoughts on possible issues of buying a large scope in your other thread. Now the good bit I obviously cannot say what you will see from your back yard as I've never observed from it but from a dark sky........ I can't actually think on where to start.... Suppose I could start off by telling you that pretty much the entire new general and index catalogues are within the grasp of a scope of this size. There is an entire lifetime of observing in these alone. Next, bin your pocket sky atlas. It is useless with a giant scope like this. You will be routinely
    7 points
  7. LBN 534 is an isolated and elongated molecular cloud in the constellation of Andromeda. Either shock fronts from a supernova or ionization fronts from a massive star could have caused the shape of this cloud as well as the spatial distribution of young stars. The blue reflection nebula, vdB 158, is located at the southern end of the cloud. The nearby bright B9.5V star, HD 222142, illuminates VdB 158. Telescope: Tak BabyQ ED85 @450mm Mount: EQ6 Camera ATIK 460 Filters: Baader LRGB Exposure: 4h (well , this is what we have..) Location: Mt Parnon, Greece @ 1430m More: http
    6 points
  8. so much for the forcast, cloud, cloud and even more cloud. 6 frames staxed with regi, same kit as allways. hope the weathers better tomorrow. one for the record. thanks for looking, clear skys charl. mono. coloured. action crop.. crop of big AR.
    6 points
  9. Clouds all morning till about 11:15 then there I got some nice big blue bits. Seeing was pretty good so I pitched up outside. I'm pretty pleased with the full disk but I bodged the close up. The flats I took for the close up appear to have introduced a nice pretty gradient, didn't happen with the full disk flats though, also I should have hand picked the subs as they're not stacked too well but hey ho. I was in a rush with the stacking as I've been busy since capturing the data and was eager to get back to it. I'll pay more attention next time. FD is 100 of 300 frames, 1/1000, ISO 1
    6 points
  10. So with over 70 hours of data, here we go... HaLRGB 3 panel mosaic. Click on the image and the 'Bigger One' button should be lower left. Olly and Tom.
    6 points
  11. That is a big scope. Have you seen one in the flesh? If not, I strongly advise you to go and see one first. Otherwise a 16" Dob suddenly turning up on your doorstep is likely to be a big surprise. Be aware that huge scopes in showrooms or at star parties look smaller than when standing in your lounge.
    6 points
  12. Thought I would put an alternative slant on this post by going 0.965" old school. Really enjoy using these when widefield views are not required.
    6 points
  13. M33 (Triangulum Galaxy) from a few nights ago - it was VERY windy so I had to dump a lot of subs. Ended up with 25 x 180 lum binned 1x1, 20 x 60 RGB binned 2x2. ED80, HEQ5, EFW2, Baader LRGB filters, guided with ST80 and Lodestar. Processed in Pixinsight.
    5 points
  14. If you have any sort of light pollution that gives you a faint or no Milky Way, then an 8" Dob or six inch frac will let you observe the brightest of targets. The problem is getting good contrast to enable faint targets to stand out. From a dark site a 10" Dob will provide you with stunning views. Remember , increasing aperture means increased weight and transport issues. Buying big aperture will not open up the skies and if you can just grab an easy to use scope, it'll be the one that you use. Remember that a lot of the off the PSA targets may be difficult to locate , especially if the s
    5 points
  15. The Cocoon is not my favourite DSO as far as good looks go but its surrounds are fascinating. The first image is a Milky way image from a few nights ago (posted on widefield forum also) that focused on the Elephant Trunk complex as the main area of interest. Only later did I notice the cocoon to the right of the image. It looks a bit like a flying hot ember with smoke behind is as it falls to the ground. The image was 21 X 5.5 min unguided subs with 50mm lens on modded 1200D camera at F5. The second image is a development of one posted on here a week or so ago. This time I have adde
    5 points
  16. Two weeks ago I went on an astronomy trip to La Palma with a few fellow amateur astronomers. We visited the huge GTC and the Mercator telescope on top of the island. We got a guided tour at both telescopes and as a very special bonus the staff of the Mercator allowed us to spend the night at the telescope building and observe with our own telescopes right next to the dome. Wandering around the observatories at night is something which is normally strictly forbidden, so you can imagine it turned out to be one of the most memorable observing nights we ever had.The best thing was the weather bei
    4 points
  17. Here is my take on the seven sisters. It is interesting more for the fact this is an unguided setup using a TS60ED refractor with the TS x0.79 reducer at 260mm focal length, with an ASI1600M cooled CMOS tracking on a StarAdventurer. 30 second exposures for a simple RGB image. 180 subs in Green and Red and 240 subs for Blue for under 5 hours. It took about that to simply calibrate and register them all I'm still far from happy with the processing, so feedback welcome.
    4 points
  18. Not so good as the ones on Sunday night https://stargazerslounge.com/topic/278799-iss-over-france-tonight/ but pleasing - to me anyway. I now have a theory which may help budding ISS photographers and I would be interested on others thoughts. The ISS on Sunday was just south of me and so my thoughts are that from that angle I can see more of its surface bathed in sunlight. On Tuesday night it was north of me so therefore more of its surface was in shadow. Could be completely wrong of course as the time of passing will also have an effect on the angle light hits the station.
    4 points
  19. GSO 305 mm - Canon T3 - 4 x 45 seg (3 min) - ISO 1600 - OAG - Skyglow filter - Coma corrector
    4 points
  20. A beautiful evening with deep blue autumnal skies led to met getting the dob out, planning a casual tour of Sagitta but ending up spending most time further south in Aquila. Whilst I got dark adapted I enjoyed M13, M27 and M71 - amazing how M71 looks rather unimpressive immediately after its brighter Herulean brother! The sky was nicely transparent, seeing was reasonable and the earlier stiff breeze had calmed down. Interstellarum was my guide again; just picking off some of the targets denoted as being suitable for 12" telescopes and smaller. But it started with disappointment. An in
    4 points
  21. Cloudy pretty much all day and even when the sun did get through there was still some cloud slightly masking it. Managed to fire off a few shots. Stacked them to get this resulting image:- Thanks for looking. :-)
    4 points
  22. Had my first go at this target in narrowband with the QHY5L-II-M. Was very skeptical if i could use the extremely faint and noisy OIII data at all, but i think it did somehow work, although it's a bit on the noisy side. all in all i'm very happy with the result, especially for my first attempt. Not sure if i made the proper color balance though? Any tips and thoughts are welcome. Captured with the QHY5L-II-M at 50% gain, unguided with a 135mm F/3.5 Olympus lens. 100x 120sec OIII 47x 120sec Ha
    4 points
  23. It all depends on the particular seeing conditions and the how bad the light pollution is?. To really get the best out of a large scope it needs to be used at a dark site to grab in those fainter fuzzys. A 10" Dob at a dark site will show you far more than a 16" Dob at a light polluted site. Therefore to get the best out of any scope dark site is best at any aperture. But if you are investing a lot of money in a 16" dob be prepared to travel to a dark site to get the full benefit. As has been said on this forum before a tank full of petrol to get to a dark sight and a bit of travel time
    4 points
  24. Hi. My previous post of M33 was not very good,and way over processed. I,ve had another go at this,and hope it looks a little better. Mick.
    4 points
  25. It was done mainly for a retard over in the States , one of those with a three grand 'scope but no idea how to use it , hopefully he sees it . I had a major row over on Cloudy Nights a year or so back with him after he accused me of using SDO data for my discs , apparently I was "down-processing" the data to make it look rougher in order to pass off as my own ... It's not possible to capture this kind of detail with single DSLR frames apparently ... I really wish I'd grabbed screenshots of the conversation before it got a bit out of hand and got deleted by the Mods , it was a great r
    4 points
  26. Finally got some clear nights where I'm not working, M42 and m38 taken on 6th of October with a GPCAM V1 and 130p F5 newtonian: M42 312 seconds of 8 second exposures. M38 3 minutes of 15 second exposures. Top to bottom, M35 420 seconds of 1 minute exposures, M44 330 seconds of 1 minute exposures, and M81/M83 360 seconds of 1 minute exposures. These where taken October the 2nd with a GPCAM and a 135mm Chinon lens at F8. Comments welcome as always:
    3 points
  27. Hi All Well I was initially quite pleased with the subs I got with my Tamron 300mm lens at F2.8. However stacking them was a complete nightmare - resolved thanks to fellow SGL folk - and processing was not a lot better! I've been generally fairly chuffed with my previous DSO images but this one is really pretty grim -there are just too many stars! Looking at other recent submissions here - all of them brilliant - it looks like this really calls for narrowband filters and probably CCD rather than DSLR. Anyhow, if anyone can see a way to do improve this image I'd be grateful - I tried
    3 points
  28. After many issues with image processing on two different monitors and obtaining quite different results from each I decided to buy a gadget which enables the monitors to be calibrated. The one I got is the Spyder5Pro: It seemed straightforward to run through the calibration routine but the result looks.. a bit odd. That may be because I'm used to a more soft/yellow display and the device tries to calibrate to 6500k (which looks harsh/blue to my eyes). Whatever, I have received comments before that my images have a blue cast so this may explain why - if I'm visually trying to compensa
    3 points
  29. Finally!!! it is now dark enough and clear enough up here at 60° N, and surprisingly most things worked last night when the sky cleared after midnight. Indeed, it was really dark and clear, but unfortunately I forgot to bring our my new Sky Quality Meter. After being out of touch with astrophoto for 5 months, just finding all bits and pieces and remember all the procedures can be stressful - so I started with something easy. I never gone for IC1396 before and any comments and suggestions are welcome ES 127ED on EQ8 in obsy. Finderguider. Canon EOS 60Da at ISO1600, 18 x 10 min
    3 points
  30. Not really sure what I was thinking when I decided to image this, seemed like a good idea at the time. A Cat II, F, Mod reflection nebula (full details and narrative under the image) under average UK skies proved to be more difficult than I anticipated! 331 subs, 1 moth (the flying type, not a typo!) and a lot of processing resulted in ....... Here is LDN 1355/7 LBN 643 (the Dust) VdB 9 & 7 (the reflection nebulae), taken under average UK skies, that was my first mistake but persevered as wanted to see what the RH was capable of. 331 subs Lum 43x300, 50x30 and 220 x 180, R/G/B
    3 points
  31. Not posted for a long time , it is nice to image again Finish at last , ok but still not happy with the stars , I just can`t collimate this scope 100% Thank you for watching, any comments welcome.. Scope 12" rc f 8 Camera moravian g3 16200 Mount Mesu 200 Exposure L 3.5 hours binx2 G-1 hour binx3 R+b- 1.5 hour binx3 Ha 1.5 hour bin x2 All 5 min subs
    3 points
  32. I was a bit disappointed by this one, I thought it was a bit short of stars until I compared it to stellarium - there are stars down to mag 17.95 just visible. M74 must be very faint! ... googles ... " This galaxy has the second lowest surface brightness of all the Messier objects. " No wonder it's a bit noisy.
    3 points
  33. From a couple of evenings ago. Both more or less straight off the Nikon 520D - just a gentle stretch.
    3 points
  34. NGC 7822 is a young star forming complex in the constellation of Cepheus. The complex encompasses the emission region designated Sharpless 171, and the young cluster of stars named Berkeley 59. The complex is believed to be some 800-1000 pc distant, with the younger components aged no more than a few million years. The complex also includes one of the hottest stars discovered within 1 kpc of the Sun, namely BD+66 1673, which is an eclipsing binary system consisting of an O5V that exhibits a surface temperature of nearly 45000 K and a luminosity ~100000 times that of the Sun. The star is one of
    3 points
  35. Had a quick go of M45 a couple of nights ago, 25 x 1 minute exposures, taken with unmodded Canon d100 (ISO 400) through an Equinox 80ED Pro, on a HEQ5 from my light polluted back garden in Liverpool. Slightly over processed (halo's on the stars) and my flats didn't work very well Any criticisms are very welcome
    3 points
  36. Praise be to Sat24.com ... Had resigned myself to a no-show today but it showed a thin blue stripe approaching from the North . It gave me a 45 second window to play in , 15 seconds to frame and nail focus , 30 seconds to grab 25 frames. 11 of them went into the mixer before sitting down to the Suzuka qualifying ... 1000D + Tal 100RS + 1.4x Barlow + ND3.8 + OIII. 1/160s @ ISO 100 , 11/25 , PIPP , AS!2 , Reg 5.1 , Gimp 2.8.
    3 points
  37. A nice big clear patch this morning - so time to take a disc and a few close-ups with a 2.5x Powermate:
    3 points
  38. You're welcome When you say relatively low mag, you are aware that as you increase aperture you will be forced to use higher power aren't you? The minimum power for a 16" scope is around 60x (if I remember correctly) that is allowing for someone with young eyes that can fully dilate to around 7mm. Another point worth noting is 16" Dobs are fast focal ratios by their very nature (no one builds 16" f/8 scopes). The sharper image you are after will be effected by coma. Also unless careful attention to eyepiece quality is observed the very eyepieces you are using may give astigmatic vi
    3 points
  39. Hi Alan, I love the AZ4 as a lightweight grab and go mount. They will easily carry a 100mm ED without much issue. For low power sweeping of deep sky they are ideal, and once balanced with the tension set to match the scope, they can be used for reasonably high power lunar and planetary viewing. I regularly use mine at X180. The only issues I've found with the AZ4's that I've owned is that they can be a bit rough on the altitude axis straight from the box. I would suggest very simply dismantling the altitude axis and cleaning any excessive grease. Also, just check the casting for any rough
    3 points
  40. Hey Derek I adjusted the flame, i'm not sure what colour is more natural, but from what i've seen this seems to be in the right ball park, I also thought it was a touch to vibrant so i toned it down by 3 stops.. too far or do you think it's okay?
    3 points
  41. And they look even smaller on a computer screen. I'd suggest 8" as the largest size for a first telescope.
    3 points
  42. Just to assist you in finding your way about our closest celestial neighbor, Virtual Moon Atlas is a great roadmap of surface details - and totally free: https://sourceforge.net/projects/virtualmoon/ One of the best - Dave
    3 points
  43. I just went back Soupy and had a look at a poor quality video i had of Saturn, which I had previously managed to produce an image from. Tried processing it in crastrator first and then using registax 6 to stack the frames. I think you can see the cassini divison a bit more in the second one, and its a bit dark but only took me 5 mins tops to do. New processed image from crastrator then registax6
    3 points
  44. qwick afternoon moon, sporting the lunar X, its my 4th this year. kit- ed80, 1200d in 1:1 crop mode, 60 frames staxed with regi. thanks for looking. clear skys ,charl. wide. closer. cropped more to show the X.
    2 points
  45. Without even opening the STF I reprocessed the Bubble: C11Ede HD F7, SBIG STT-8300, Baader Filters. Ha 40 20 min Binned 2x2 OIII 30 20 min Binned 2x2 SII 23 20 min Binned 2x2 The outer nebula regions are very faint, making revealing them with any saturation very difficult. Not sure why this is--maybe a byproduct of only 20 min subs at f7?
    2 points
  46. Ed80 or ED100 would be good on AZ4, funny enough i would say ED100 as the 80 is very front heavy
    2 points
  47. Globular clusters should be pretty impressive in a scope of that size. Also planetary details will be very good.
    2 points
  48. Try aluminum foil tape. Several folks on CN have had luck using it in this situation.
    2 points
  49. Combination of two years data 18 months apart. I have been waiting to complete this image for 18 months having taken it in Ha only at Kelling in April 2015.Ha 9 x 900secs April 2015 Ha 4 x 900secs Sept 2016Ha 3 x 600 & 1` x 900 Sept 2016Oiii 10 x 300 & 3 x 300 binned x 2 Sept 2016Sii 9 x 300 & 3 x 300 binned x 2 Sept 2016Atik314 & HEQ5, Skywatcher ED2120 and WO FR x 0.8Mapped HOS
    2 points
  50. It's been an age since I've made anything other than mono images (a combination of incessant scope tweaking and lack of clear moonless nights) so since I've finally managed to get some both some HA and OIII for a target I thought I'd try a bicolour. The image comprises 9x30 min subs of both Ha and OIII (3nm Chroma) with my G3 16200 on the E130D/Avalon linear. Contrast is a bit lower than it might be due to effects of the full moon and poor transparency in a lot of the subs and I've probably overcooked it for the amount of signal present. I've not used any flats yet (to do list) and there
    2 points
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