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Showing content with the highest reputation on 21/07/18 in all areas

  1. 17 points
    The short summer nights make data collection a very long and drawn out affair, with just an hour or so collected each night in 'sub-standard' nautical darkness (good thing is, Astronomical darkness is back from tonight!). So, the thirty one hours of data for my image of M57 - the Ring Nebula - was collected over twenty nights in June and July. That in itself is amazing, twenty nights good enough to image in two months - I'll take that! As for the object, M57 is a planetary nebula about 2,300 light years away in the constellation of Lyra. It is the result of the collapse of a Sun-like star ejecting material out into space, leaving a white dwarf as the core remnant. The nebula is currenly about one light year across, with the material expanding at a rate of about 40 km/s. It will eventually dissapate and merge with the interstellar medium in about 10,000 years, so I got this one in just in time. M57 is particularly interesting as it offers a glimpse of the ultimate fate of our own Sun, though the event is likely to be less spectacular as the Sun is several times smaller than the star that formed the Ring Nebula. There is a bonus object in the frame too, the spiral galaxy, IC 1296, at approx 260 million light years from Earth is clearly visible at roughly 11 o'clock about a ring nebula's distance away from M57. Technial details: Celestron EdgeHD 8", QSI 683-WSG8, Baader 1.25" filters, HEQ5 Pro. RGB = 12 x 600s each OIII = 18 x 1800s Ha = 32 x 1800s TOTAL = 31 hours Overall I am happy with this image and am particularly happy to have caught the outer layer - that was a pleasant surprise as the Ha data started coming in, I hadn't expected to see that at all. What is even better is that there is a hint of the outer outer layer - it's pretty subtle, but it is definitely there! The image has the usual SCT softness from the EdgeHD, nothing I can really do about that, the opportunity cost of the 2032mm focal length. Guiding is always challenging at this scale of 0.55"/pixel and I was generally in the region of 0.6" - 0.8" RMS in PHD2. Not bad from the old HEQ5 Pro mount, but it is well below the recommended half the pixel scale guiding error - hence the softness I guess. Anyway, I do enjoy revealing these small apparent size objects with the 8" and will just have to settle for the quality until I can upgrade my mount to bring the error down. Unusually I didn't shoot any Luminance data for this project, instead I used the new 'multi-channel' processing option in APP and created a Super Luminance layer from all the RGB, OIII and Ha data. It seems to have worked pretty well. Another first in this project was that I used the 'start time' feature of SGP, setting everything up with a start time of 23:30 and finish time of 02:30 or whatever, pressing 'Run Sequence' and retiring to bed at a reasonable hour, with the system poised ready to start itself up and grab the photons. I did enjoy waking up to a folder full of data in the morning - SGP is simply great! I hope you like the image and I look forward to reading your comments. Clear skies to you all!
  2. 13 points
    had to replace the ply dome and needed something that was UV resistant so after a lot of research i opted for external uPVC, it took a lot of head scratching on how to build it i. i ended up using pvc (solvent type) wast pipe and a hot air gun to bend it into shape and then glue'd it all together to make the frame. i made it to the same width as the old dome but made it a bit higher. then i glue'd the pvc trim to the frame and then cut and bent the the pvc soffit board to fit. and used garage door draught excluder (50mm brush type) i replaced the small casters in the photo and re-used the old runners, it took me about 5 days to build it and work it all out. i allso replaced the temp pvc top roof sliders with 22mm copper pipe. frame-1.tif frame-2.tif
  3. 12 points
    Lately I have been working a lot with Astropixelprocessor. With this software I have been starting to redo some of my data to see if I could catch more details. I'm astonished about the performance of this program to be honest. The stacked results showed smaller stars, more details and less noise. This image shows SH2-155 aka the Cave nebula which consists of 215 images! With APP I was able to integrate my Luminance, H-alpha and UHC data to get really the most out of the data. I'm very happy with the result that came out. The colours of the stars were as I liked them to be and somehow it resulted (in my opinion) in a very colourful representation of this beautiful region in the sky. Exposure info: Telescope: TMB92 Camera: QSI583ws Lum: 96x300s + 15x600s Ha: 42x1200s UHC: 35x600s R,G,B: 9,9,9x600s Total: 34,8 hours
  4. 11 points
    Just a very quick shot at veil Nebula. In fact it's only 4 shots hence the noise. Very buggy night but did my best to recoup something. Taken Canon 550d on 150pds not great but still nice to see. Now added more data. Not sure it’s much better what do you think.
  5. 9 points
    I couldn't resist snapping a few subs late a few nights ago just before dawn just to see what I could expect. I was hooked. Not sure if I will go with the HaSHP palette, leave as Mono, maybe a bicolor, or wait till the Moon fades and pursue a HaLRGB. Allot of options. I thought that the faint emissions and dark structures to the right and below of the fish head would be more pronounced after integration of 29 subs, but they really are not. This makes me feel that I should have pushed the FOV to the left to capture more of the aorta. Oh well. FSQ 106 with .6x reducer and ASI 1600 Ha 29 5min subs
  6. 7 points
    The Sun this morning Saturday 21/7/18. PST 40mm at 44X. Thanks for looking Marios
  7. 7 points
    I am really delighted to be have imaged the full extent of this nebula, having only previously imaged the 'head' area from my home observatory with my longer FL scope (https://barrywilson.smugmug.com/Image-Galleries/Nebulae/i-XKBFgXw/A). A delight to process and experiment with PI techniques. I especially love the 'searchlight' stream of OIII rich gas. Wikipedia describes it thus: "Sh2 -132 is an extensive visible emission nebula in the Cepheus constellation . It is located on the southern edge of the constellation, a short distance from the border with the Lizard , along the plane of the Via Lattea ; the most suitable period for its observation in the evening sky falls between the months of July and December and is greatly facilitated for observers located in the regions of the Earth boreal hemisphere . Sh2-132 is located at a distance of almost 3200 parsecs (nearly 10400 light years ), thus placing itself inside the Arm of Perseus , in the Cepheus OB1 region, a large and luminous association OB . The stars responsible for ionizing its gases are very hot and massive; in particular, two stars of Wolf-Rayet have been identified, known by the abbreviations HD 211564 and HD 211853 (the latter also having the initials WR 153), in addition to a star of spectral class O8.5V and a dozen of class stars B. Around the star of class O and to one of the stars of Wolf-Rayet extends a clearly visible bubble in the band of the radio waves , identified with the initials Shell B , probably originated from the stellar wind of the two massive stars. A similar but smaller structure, Shell A , houses near its center a star of class K. It is believed that in the nebula there have been processes of chain star formation in the past; at present these processes seem to be suspended, since there is no trace of recent activity. Nine sources of infrared radiation and a maser with H 2 O emissions were detected in the nebula." Following some research and first spotted by Eagle-eyed Gnomus, if you look very closely at the lower right of the image, you can see that we have been able to capture Abell 79. It's the little blue splodge just up and left a bit of the open cluster NGC 7226. CS! Details: Tak FSQ106 at F5 10 Micron GM1000HPS QSI683wsg-8 with Astrodon 5nm filters SII 34 x 1200s; Ha 34 x 1200s; OIII 32 x 1200s; 33 hours total integration SGP and PI for processing Data acquisition: Barry Wilson & Steve Milne Processed: Barry Wilson Imaged at our shared remote observatory at E-Eye, Spain
  8. 6 points
    12 panel mosaic with the canon eos 200d 50mm f1.8 at f7.1 - 15 x 60 second subs per panel all on the SW Star Adventurer.
  9. 6 points
    first try of andromeda....nex5n modified camera with old FD canon 300mm zoom 5.6F... 20x30sec iso 6400 and 10x30sec iso 1600.. 10 darks.. DSS and little PS. trailing with simple nanotracker. Second is view from my balcony in Croatia.. One photo 20sec 1600iso, old 50mm 1.4F canon. because of ARW, i had to firstly change arw to tif, after that DSS stacking, and then little of photoshop..
  10. 5 points
    With the huge dust storm on Mars, I have turned to Jupiter to indulge my passion for colour sketches. I submit a few recent examples, but make no claims for scientific accuracy. Hopefully there may still be time for Mars before it fades into obscurity! Best wishes Chris.
  11. 5 points
    I don't mind that to be honest, @Gina - the purchase was part of a bigger plan to free up money for other uses. I sold some very expensive kit but decided I didn't want to do without the use of a nice big reflector for whenever it takes my fancy to use one. By the time I sell the accessories that I don't need and taking the discount, this thing will have cost me around £200. Not bad given that I planned to buy a new focuser for a 6" Orion Optics F11 Dob that currently doesn't have one but will now inherit the GSO Crayford from this scope when I fit my FeatherTouch Crayford to the 10" F5. Some creative maths then tells me the 10" only cost around £50
  12. 5 points
    As you know I had cause to empty my Tele Vue account a few months ago - it was very sad to see them all shipped off to new foster homes But fortunes change, and I now have a very nice box of 100º monsters and a full set of 70º XWs. I have kept a small token of green and black in Nostalgia Corner in the hope that one day they might all return Yes, I know, there are overlaps - but I keep telling myself it's ok
  13. 5 points
    Correct! But it is the Altair-branded version There is a lovely dent in the bottom half of the tube which doesn't encroach on the light path and attracted a suitable discount. Very nice CNC dual-speed focuser and sturdy rings which are now attached to a 15" ADM Losmandy plate and the handle that you can see in the picture. Very pleased
  14. 4 points
    Quick comet hunting session last night after work Skywatcher 200p, HEQ5, Canon 600D. 10 x 120s @ISO800 Thanks in advance Mark
  15. 4 points
    Thanks to some of the guys on here I’m now the proud owner of this wonderful Eyepiece case thanks guys they will be loved . yes there is a deliberate gap hopefully the 12mm will not be to long joining anybody ?
  16. 4 points
    Keep tinkering with this impressive little mount and decided to push it way beyond it's operational envelope. Here's my work-in-progress Western Veil at an amazing 720mm focal length, unguided, and without a Polemaster. Definitely not something I'd attempt on a regular basis, though.
  17. 4 points
    Latest comment is 'optics pretty good, round diffraction rings, no colour but just some coma caused by the tilted corrector' Sounding promising
  18. 4 points
    In a hurricane you could use that to grab'n'stay... The mighty engineering power of the triangle combined with the ingenious use of tension. Those spindly tie rods going from the feet to the centre of the column are pulled tighter as the mass of the telescope increases. This is a structure which stiffens as load is increased. All good stuff. Olly
  19. 4 points
    Curb your grab-and-go memes, please. This is grab and go. vs. The telescope you want to grab and go with when you visit @FLO. John
  20. 4 points
    Been a long time since I posted in here. This is a bit of a temporary solution, but I’m back in the 2” game, which is fun. The thing on the right is an extension tube for the Tak when used with a 1.25” Prism.
  21. 3 points
    .... under the care of Es Reid TD (Telescope Doctor ) I’ve been increasingly frustrated by the performance of this scope so decided to get it sorted properly. It has given me some very nice views of Jupiter on occasion but in general has been completely outclassed by the Tak for planetary observing. The only area it has been superior has been for lower power DSOs where the aperture has counted on OCs and GCs. It would not take very high power, and given that is supposed to be its strength it is frustrating. The secondary is fixed on these scopes but I’ve tried collimating the primary and whilst I had managed to get it looking ok when adjusting, it was not stable and the star shapes were never that great. The clunking noise made when turning the scope over indicating a loose primary, possibly amongst other things. I had tried to take the scope apart myself, but both primary cell and corrector plate were jammed on even after taking all the bolts out, hence the trip to the hospital. Es had to take a mallet to it to remove the primary cell , something I would not have been brave enough to do, and has indeed found a loose primary. The locking ring was missing its M4 screw so had worked loose over time. In addition, the corrector plate is not square to the tube. Hopefully all will be sorted and I will have a scope that performs to its full potential back in my hands when I’m back from my holiday. I do not have room to take it anyway so it may as well have some TLC whilst I’m gone. I shall report back when I get a chance to test it out.
  22. 3 points
    Got a new Canon EOS4000D, so managed to get a first few Lunar shots with it last night. Nothing earth shattering I know, but came out pretty good. Single shot only on un-driven mount. Scope used Altair Astro 66 ED-R, no diagonal used.
  23. 3 points
    Date: Thursday 19th July 2330-0100 Scope: 20” f3.6 Lukehurst Dob with Paracorr (fl = 2089mm & f4.1). Night Vision: PVS-14 with Photonis 4g INTENS. Eyepieces: 55mm (f2 x38), 35mm (f3 x60). Filters: Astronomik 6nm Ha CCD. Moon: 49% Desperate to get out again... After having a GREAT night out on Tuesday, I was desperate to get out and view more Nebula with Big Dob as soon as possible. The sky was partly cloudy (mainly to the west) so I set the fans running early and went out anyway! Once I had 2-star alignment completed (for my Nexus push-to) I headed straight into Cygnus as I had ignored this area on Tuesday night and wanted something different… Crescent – First up was a revisit to the Crescent. I was using the 55mm Plossl and had the 6nm Ha CCD filter attached to the Paracorr2. The view was lovely with the whole of the crescent showing. I could make out black detail within the whiteness of the crescent nebula. The centre section was particularly eye catching. I upped the magnification by switching to the 35mm Panoptic and the view was even better, slightly darker (so I had to turn the gain up on the NVD to compensate) but the black details within the nebula were more easily viewed. NGC 6857 – Looking at Sky Safari, I moved quickly to NGC6857 which was seen as a small bright nebula with a slightly elongated shape. I could see another blob of nebula in the same fov… Sh2-100 – Checking Sky Safari the “other blob” was identified as sh2-100. It appeared slightly larger and fainter than NGC 6857. Sh2-99 – Onto a nearby neighbour sh2-99. Just outside the same fov as the previous two targets. This nebula was the hardest to see of the three. It was also the largest appearing as a ghostly patch. Sh2-101 – Quickly centered sh2-101 which was a decent size. I switched back to the 55mm Plossl. The nebula appeared to be “mushroom shaped” (lying on its side) and was pretty transparent except for a brighter leading edge. Nice. NGC 6842 pneb – A planetary up next. It appeared very small but was of reasonable brightness and easily seen in direct vision. Veil nebula WOW WHAT A SURPRISE! Last time I visited the Veil (with my Night Vision and the big dob) it was low in the sky and the view had been underwhelming compared to that seen previously in the Ethos21 and Big Dob. Well tonight, it was a different story all together NGC6992, 6995, IC1340 – Wonderful bright structure to trace and comparable to that seen in the ethos21 previously. “Pickerings triangle wisp” was magnificent. Also see NGC 6979 (very bright), “E” also very bright. “The thin thread” was not as bright but easily followed, passing both “G” and “B” on the way up. NGC6960 – this was vastly improved over my previous NVD attempt at the Veil. I could see the split into 2 parts at the top (I see a split into three parts with the ethos21), so still not quite matching. “J” and “I” were visible along with “B” and “A” Sadr region of Cygnus Before I begin, let me say that the view was so good that it made my eyes water! (no, I am not lying). If you have ever seen M42 in a big dob and been wowed by the sheer texture and 3D of the Orion nebula then “you aint seen nothing yet!” I was completely blown away by the texture and variations in density visible in the eyepiece. Put this together with the sheer size of the Nebula – you just keen panning and panning and more and more beautiful 3D depth nebula just keeps coming and coming. This was a real highlight of all my years in Astronomy. I cannot overstate how good it was! Surely, couldn’t get better unless you were there in person! Sh2-104 – A small roundish patch was seen. Sh2-112 - Beautiful. This decent sized nebula is split by a thick black lane of Hydrogen running through (or in front of it). There is a bright nebula to the right hand side of the Hydrogen which looks like a letter “C” on top of a stick. ( I thought of the Rolls Royce silver spirit on the bonnet of a car as I looked at it! ). Very nice. Sh2-115 – A big nebula with lots of intricate detail. The upper sections were billowy in nature. Underneath was flatter with more straight lines. I could see a bright blob within this lower section too. Checking images this morning, they reflect what I saw very closely! I still can’t believe that I can see “the same as images” with my eye at the eyepiece – MIND BLOWN! AR0352 – Yes I know, what is AR0352? It was there on Sky Safari next to where I was so it would have been rude to not go over to take a look! It turns out to be a decent sized planetary nebula. Not too bright but easily seen in direct vision and bigger than most planetaries that you see. North American nebula After Sadr, I had to come revisit the NA & Pelican. Another moment to look away if you don’t want to know how good it was I am afraid! The North American nebula was INCREDIBLE. The Bay of Mexico so black, the bright leading edge to the trunk bit was very bright. Another bright curvy bit seen towards the top side. So much texture and variation in “whiteness”. Beautiful. Pelican – Wowsers. I had a pic of the Pelican open in Sky Safari and once rotated to match my view. I was able to eek out every (and I do mean every!) detail. If was much fainter than the North American but it was all there. Its just a shame that you have to pan around and I can’t get it all into the fov but it seems inappropriate to complain when you get the view that I had. < CLOUDS ROLLED IN> Thoughts of the observer When the clouds rolled in cutting my session to just 90 minutes, I shrugged my shoulders and said “oh, well”. What a journey I had just had, too good to be dampened by a few clouds coming over. I am still stunned and eyes welling up again this morning when I remember the view of the Sadr region, it really was a highlight of all my astronomy years. Can’t say that I will die a happy man because of it but I will certainly never forget it! Clear Skies, Alan
  24. 3 points
    I was very pleasantly surprised by the quality of view offered by a very cheerfully-priced 6" f/6 from GSO. It set me on the Newt Path (the fracs are staying, of course...).
  25. 3 points
    I had the pleasure of meeting Al Worden at RIAT last weekend. Apollo 15 Command Module pilot, first astronaut to do a deep space spacewalk and officially the most isolated human ever whilst his crew mates were on board the Falcon.
  26. 3 points
    I have a brother-in-law who is a panel beater by trade. Dent? What dent?
  27. 3 points
    My 3m, 10' dome being rotated by hand Scene 1 take 6: ?
  28. 3 points
    This is it folks ‘Lean Observing’ Bank of Televue properly raided! You only realise how good Delos are when you use primitive Plossls (Ethos ain’t bad either). But, they do have a certain charm. Rather like driving a good classic car compared to its modern counterpart. ?. Also, only 3 Dobs now (and solar gear - obviously). Paul
  29. 3 points
    I added 37 5min Ha subs. Its a reprocess from scratch, so parts of the image did not come out as well, and parts better. Overall, I like the addition of the Ha. I am not sure the image is finished yet--but I seem to have reached a a good stopping point for now.
  30. 3 points
    OK, you were right. The thing is, I ran out of mag and Saturn was begging for more. Added a TS UWAN 4mm ?
  31. 2 points
    I Captured Saturn on the 16-07-18 with my just collimated C11xlt. I have been wanting to see if the C11 was capable of resolving the Encke division at such a low elevation right here under UK skies. All I can say it really is a very difficult task as I stacked 4000 frames both IR685pass and the baader red filter and thrashed the life out the data right down to the last pixel. First I thought yes I can see it then the reality set in thinking No It's an anomaly due to over processing the data. anyway I combined some red & green data to make a full colour image. I honestly think I can just see it on my monitor but I've been pixel peeping all day. Please see what all of you think I've included two resized images 115% & 125% respectively to help you see.
  32. 2 points
    If you have read about the Messier objects, then there is a good book written by Martin Mobberley entitled The Caldwell Objects. Martin has a great way of combining a sense of humour with accurate information. I have been using this book `in the field` at star parties to visually guide me through the Caldwell catalogue, plus there are good tips for imaging as well.
  33. 2 points
    Good to know and I look forward to looking through this. I can assure you my Fracs are feeling no stress as a result of this latest purchase ?
  34. 2 points
    Happy birthday Gina (card is in the post honest) bottletopburly, can't be 50 must be 21 surely Jim
  35. 2 points
    when i first used plate solving and alignment with APT i sat in my chair and couldnt stop chuckling, it seemed too easy to be true.
  36. 2 points
    I could not live with a dent like that (even with a discount). Im a bit OCD about things like that. Id send it back. Love the observing chair. It looks very comfortable.
  37. 2 points
    No sympathy required Stu. But, thanks all the same. A case full of Televue is better than money in the bank. ?. I’ll enjoy rebuilding my collection. Some of Gary’s nice new bix full of Green & Black look really familiar! He’ll enjoy the move from the excellent SLV range. The viewing experience is similar in style. But, everything that the little SLV’s do, the Delos does just a little bit better and noticeably wider. Paul
  38. 2 points
  39. 2 points
    Guan Sheng- 830 = 10 inch f5 Newtonian.???
  40. 2 points
    The Veil is very thin at 1x. North America and the other larger emission nebulae would be bettered targets. I have made a filter for one lens of my 2x54 to see how it performs. Peter
  41. 2 points
    I am happy to report that Lunt, true to their word, " we can help you with that problem", did so very promptly and I had a new blue filter glass from them arrive within 5 days from the USA to Australia ( I still haven't had time to replace it hahaha been very busy) With their awesome service, I will recommend Lunt to everyone. Support of products is very important cheers Dave
  42. 2 points
    I’m making some progress with this which I will share soon.
  43. 2 points
    Stu it will be interesting how things improve after being sorted by Es Reid. Its good that there are professional individuals that we can trust when our scopes need special attention.
  44. 2 points
    Sounds like a plan! On eyepieces I'm pretty much done, after sorting out the longest focal lengths. What I'd like is a Quark eyepiece (from FLO) and then putting my thoughts on how to get a Dobson with certain specs.
  45. 2 points
    The docter is a fantastic eyepiece and I like it even more after semi permanently fixing the baader pushfix adapter to it. Now I can screw the VIP in T2 mode to both the Zeiss zoom and the docter, essentially gaining a 6-5mm UWA when needed. Plus, no need of 2" to 1.25" adapters..
  46. 2 points
    Imagine the size of the dewsheild that it would need..... and ....... those are really cool socks he is wearing ?
  47. 2 points
  48. 2 points
    Hello I know you have seen lots but tonight I saw Jupiter with 4 moons for the first time ,I’m very happy i think I need a better finder scope (any advice welcome) and I think I need to look into good eyepieces again any recommendations thank you ps the apps are a great help thanks
  49. 2 points
    I have no list and never will do. I just enjoy what I get to look at. No pressure, no failures or self induced issues. Just plain simple observing pleasure ?
  50. 2 points
    Now the official press release about the Astrophotographer of the Year 2018 has been released (https://www.thesun.co.uk/tech/6814265/stunning-astronomy-photographer-of-the-year-2018/) I can proudly share that my son has been shortlisted also for the competition (his image is not shown in the press release, as well as about 120 more images ). This year my son Davy (10) asked me if he could participate in the young astrophotographer competition and I told him that he could, but should do all the imaging and processing himself, after that I taught him some basics. So one night we went out setup my C11 and I explained him how to make movies of the moon, how to focus, and how to process the images using autostakkert, astra-image and photoshop for mosaicing. Then he started working and came back with this result that we submitted to the competition. Great was our surprise when we got the message he was shortlisted. I myself wasn't shortlisted this year, but I'm so proud of him that he is! So in October I will go to the Awards Ceremony in London for the 4th time, but now as a guest of my son. That's pretty special...
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