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

  1. 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
  2. 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
  3. 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.
  4. 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
  5. 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.
  6. 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
  7. 2 points
    Oh yes! , what a great image. There is something gaseous going on outside of the usual 'ring'..... and also there is a spiral galaxy in there that I have never been aware of.. Great thread title as well. ? ( it does become an obsession doesn't it ??)
  8. 2 points
    You can use the contour option if you manipulate the noise threshold, structure number, and the scale number-you can target big, small and medium stars (somewhat)-but I like your method--it sounds intriguing and I can't wait to try it. I have been using 5x5 element, with a 60-40 setting. And I don't know what interlaciing is (the first option). But I don't like MT at least half the time, so maybe my settings need some work. Overdone star control is far worse than no star control in my opinion. Nice image by the way Hunter. I don't find the stars annoying at all-there is a mixture of sizes and brighnesses, giving a sense of depth. Overdone star control results in all stars being dimmed down to speckles and I find that IS annoying. By teh way--if you want to remove the pinkish cast in the small stars, extract a lightness layer and use MMT (or MLT). Use 5 layers and x out the R layer. This will remove everything in the image except the stars (it won't pick up the big stars). Then use curves with a very steep S curve and hit it 2 or 3 times. This is a star mask that will include all the mid range and tiniest stars--the stronger your curves application the more stars it will bring out. Use this as a mask on the color image and use pixel math to replace the image with the Ha stack. Because the mask is on only the stars will be replaced and you will have an image with white stars--which I prefer in narrowband if you don't have RGB data. This can really reduce the magenta stars prevalent in narrowband images. Rodd
  9. 1 point
    Hi all. As a proud new owner (new to me at least) of an Altair Astro 66ED-R refractor, I would like to mount a light red dot finder on the scope tube (possibly a Celestron Starpointer Pro or some such), yet curious as to which screws on the focuser allow me to attach a finderscope shoe at all? Previously had an Starwave 102mm f11 ‘frac and it was pretty obvious where the two securing screws where for the finderscope shoe, but the similar looking screws used on the new scope seem to far round on either the left or right hand side of the scope for any shoe mounting. Any one with this scope with a finderscope shoe fitted please? Pictures below so the screws on the top, left and right hand side of the focuser. The silver Allen key screws seem the most likely candidates, but seem too far out of position really?
  10. 1 point
    Thanks Chris. I guess one can never truly be done with a target like this. But I am calling it quits till I image it again. Rodd
  11. 1 point
    I have Sky View Lite on my iPhone, but if I wanted reading material, I would pop ' Turn Left At Orion' in the suitcase, along with my 8x40's.
  12. 1 point
    First I tried processing them all at once, but my computer couldn't handle that. Than I processed the 3 stacks and then had APP integrate these 3 stacks together. That really worked perfectly and gave much more detail. Especially in this region where the H-a and Lum are really showing different parts...
  13. 1 point
    A couple of recent sketches using different mediums, to create an impression of what can be seen on the giant planet even at low power and with relatively small scopes. I note some great images posted already. Chris.
  14. 1 point
    This is brilliant, well conceived and implemented.
  15. 1 point
    Planning, patience, materials, time, labour, delivery, thats pretty good value! lol If Only! ?
  16. 1 point
    Thanks everyone for your kind comments, Stu, I have certainly been called a lot worse ! Chris.
  17. 1 point
    I've had the bug for a few years now, but would only ever have alt-az mounts! ? Doug.
  18. 1 point
  19. 1 point
    Thanks for all the advice, I’ve decided to go with the BST EPs
  20. 1 point
    this picture has just answered a question, My mount is off atm with darkframe being tuned so I am playing about with my SA and looking at the threads when i noticed the red dot finder, I had one come with the MAK but never really used it untill the other night couldnt figure it out at all. this picture though tells me i had it the wrong way round lol, just presumed it was the other way round for some reason lol
  21. 1 point
    That's great Gav....... super star colour, everything is there in M57, even if tantalising.
  22. 1 point
    Really nicely presented Gav, it isn't always easy to combine the 5 filters into something appealing, but you have nailed it here. I'm going to tease you now by suggesting you go even longer and try and capture the outer-outer rings, you have just a hint of their brighter parts at the moment. They only show in Ha, and require very long exposures and lots of them, not the easiest
  23. 1 point
    Ah I see! It looks like your running an older version though. Perhaps updating to the latest Ascom platform might help. Though it's no guarantee all goes smoothly mid session! Just to rule out APT, can you load up a previous image of Polaris, PlateSolve, sync and then slew back to Arcturus and see if it points east again?
  24. 1 point
    If you think about what the RA axis is, its the point in the sky that your mount is tracking. if its parked its pointing at the sky but the sky is rotating in relation to you so its always changing.
  25. 1 point
    Outstanding sketches Chris. It's not an easy task creating an accurate colour rendition of Jupiter, but the colours in you're sketches are perfect. Superb!
  26. 1 point
    If an upgrade is planned then penny pinching now will be wasted money. However you can get quite a good barlow (GSO/Revelation) at Astroboot ,who are reputable and I have used several times, for not much. You can also get a a 4mm plossl and plossls are fine BUT at 4mm the eye relief will be small and uncomfortable so something like the EP that Alan mentions would be better.
  27. 1 point
  28. 1 point
    You've got decent stars for such a long focal length. How long were your subs?
  29. 1 point
    Yes, let's see it! Please.
  30. 1 point
    Haha...too many jokes...too many jokes...none of which is civil or polite.
  31. 1 point
    THE single best thing on SGP and what makes it frankly invaluable to me is the framing and mosaic wizard. This is excellent and really helps in framing a target and looking around to get the best framing possible. I did think about using another programme earlier this year as I do find SGP flaky at times, but this alone stopped me from changing. So while I can't compare APT and SGP, I can certainly say that the framing and mosaic wizard makes SGP superb from the start.
  32. 1 point
    I have one. It is indeed the short black plastic Grub Screws... Or at least, these are simple "stoppers" that have no obvious other functionality! ? The (pukka?) finder was "unavailable", when I bought mine...
  33. 1 point
    I was reading up on Cygnus objects in Burnham's Celestial Handbook this morning (as one does!). Here's n extract about Gamma /Sadr that got me thinking back to this post... "... the area around Gamma itself contains vast stretches of faint diffuse nebulosity whose intricate details may be studied only on the photographic plate..." Times are changing!
  34. 1 point
    That looks an excellent addition Piero. I think the Docter might be next on my list! I still recall it showing me 5 moons around Saturn in my Tak, no scatter at all!!
  35. 1 point
    Thanks Piero, I’m looking forward to using it. I only use Binoviewers for high power now, and have the Nag Zoom if I do cyclops but the Docter is definitely on my list to reacquire too
  36. 1 point
    Nice one! I find the 20 HDC stunning with the Tak. My current set of 2" eyepieces is: 30mm APM-UFF, 20mm Lunt, Docter (w adapter), and Zeiss zoom.
  37. 1 point
    I have always wanted to image this region but have never had a FOV to do it justice. A mosaic was about the only way. Snapped a few subs before the 50% Moon set. Again--not sure what to do with it. Mono is dramatic. The Hubbell Palette is not for me for this target. Maybe HRGB. Or-maybe a mono mosaic. So Many Choices! FSQ 106 .6x reducer, ASI 1600 with 3um Ha filter. 30 5min subs, unity gain
  38. 1 point
    Hi. Imaged over two nights with my ED80. This is a RGB image with H-Alpha then added to the red channel. The intergration time was 15x600 sec for each filter. Darks/Flats and Bias frames were added. The Ha Filter was a 12nm Astromomik 1.25. I think the Ha has added to the overall image,as this is an Emission Nebulae. Thanks for looking. Mick.
  39. 1 point
    Can you tell what it is yet?... The box is 137cm x 47cm x 47 cm
  40. 1 point
    If a colour other than white had been available when I built my observatory I would probably have gone for UPVC cladding.
  41. 1 point
    You can see some things with e.g. an Oiii filter and you'd be surprised how much difference it makes getting down and out of immediately local visible light (like neighours' kitchen etc)
  42. 1 point
    That isn’t what I asked ? You say in your review the Helios binocular is the same as the APM model “minus the FK-61 ED front lenses”. I think we can agree both binoculars are from the same factory but it is your comment regarding the glass type that most interests me. Are you guessing the Helios model uses different glass? Or has a retailer, distributor or manufacturer stated it? Sorry to be pedantic but details like this matter and I am genuinely curious. Steve
  43. 1 point
    I wonder if the normal rule applies, Cheap, fast, good. Choose any two. ?
  44. 1 point
    That’s great news, cracking image too. You must be very proud. Has anybody else noticed that Olly is Irish now? And IC342 has grown to replace an entire constellation as well ?
  45. 1 point
    Gentlemen. This is SGL. Spats allowed on other forums are not permitted here. Please play nicely
  46. 1 point
    Comet C/2017 S3 (PANSTARRS) photographed on July 9th 2018, a week after its first outburst of activity has dropped from magnitude 9 to 10.5 with a coma which has reduced again its size from 5 to 3 arcseconds in appearent diameter. In the upper part of the image highlights "Tombaugh 5", a little-known open cluster of faint 12 magnitude stars. Telescope GSO 8" N f/3.8 & Camera Atik 383L+. 14.5 min. total exposure. Non-composite stacking. Locally from Vallés, Valencia (Spain). http://cometografia.es/2017s3-panstarrs-20180709/
  47. 1 point
  48. 1 point
    Hi there, the 5x Barlow will be too much magnification and all you will get is a fuzzy blur, it is for photography use not visual. The 2x Barlow should be most useful though.
  49. 1 point
    Like @John, I consult Stellarium to see what's on show. I also keep an eye on my records/log and try to visit new targets. But I've never set myself any goals in terms of quantities/classes of objects - it's meant to be pleasure, after all, and there is never a shortage of things to enjoy. Doug.
  50. 0 points
    And the forecast in the south for the lunar eclipse on July 27th is 97% cloud cover.
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