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Showing content with the highest reputation on 17/10/19 in all areas

  1. 12 points
    I am getting fed up of reading these offers the seller has made her point and please show some respect for her loss. The asking figure is fair and in any case in the spirit of the forum an offer should be made by MP, please lets have a stop to this as apart from anything else it could be causing un-necessary upset. Alan.
  2. 11 points
    We can't leave Europe how the heck are we going to leave the planet.
  3. 9 points
    Hi I have been Imaging the Witches Broomstick over the last couple of months when the clouds have allowed in the hope of having it ready for haloween. Also I have been trying to get to grips with a new (to me anyway) piece of processing software, probably like a lot of folks on this forum. And thanks to this forum and the helpful people on it I am finally getting somewhere! I don't think I am finished yet with this image as I know there is more data in there that needs teasing out, I had not done myself any favours as I am still learning the pitfalls of CCD imaging and had image ritate ticked on several sessions so it took a lot of working out how to stack several sessions with relevant darks flats and Bias correctly orientated! The lesson I have learned from this is to be more organised or at least more vigilant when collecting the data! Anyway, enough rambling on...... Its the result of about 18.5 so far.. I've included the Tif file if you want to see it in more detail. So far I'm impressed with APP, thanks for looking Bryan first APP HA-OIII combination no layers ha-lum 40%.tif
  4. 9 points
    Gents, Thank you everyone for the help. I would genuinely up the creek if it hadn't been for the kindness of people of this forum. I know nothing about astronomical gear at all, but as everyone who has bought the gear from me from my late Father-in-law they will attest to the fact that it is all in perfect condition. He kept everything in specific foam hard cases so no damage came to any of it. I have offered collection and even personal delivery by myself for all the items worth any kind of reasonable money, and allowed buyers to test and check it all. I have photos my F-I-L took with this camera to show the quality (taken just a couple of weeks before he passed). I am not here to screw anyone, I am here to sell the equipment to people who can get use out of it for a fair price to pay towards the funeral costs. Thank you everyone for the interest and help. Annie.
  5. 7 points
    Over the last couple of weeks I’ve been imaging the Crescent using different focal lengths and filters Widefield 135mm I was working out that this is the fourth time I’ve been imaging in or around the Sadr nebula. On this occasion it was because I’d already started on the data for 900mm shots of the Crescent and I thought it’d be nice to have a wider shot of the general area, putting it into context. I was inspired by @Stub Mandrel's recent results with his Triband filter to see if the same (or similar) technology in a clip filter would help with wide frame nebula images and acquired a Skytech Quadband (that transmits 2 35nm bands around Ha, Hb, Oiii and Siii – hence the name) . I must say I’m quite impressed- I got this from a sequence of 20x 150 second captures on Sunday night under a 99% moon using a Russian made 135mm vintage lens on a modded Canon 600d and a Star Adventurer. Normally I’d only attempt proper Narrowband under these sorts of conditions, but I thought it coped pretty well under the strong moonlight. The only slight concern is the halo around Sadr itself. The photo picks out how prominent the Crescent is (below centre and to the right of this picture), but also shows how “busy” this bit of sky is- the Butterfly nebula pops out, with its prominent dark lane, but the fainter cloud that it’s a part of extends beyond the frame. There are also clusters aplenty- my favourite is M29 – the Space Invader cluster just below and to the left of the centre. Probably my eighties upbringing… Hydrogen Alpha These are taken using a Baader 7nm Ha Filter on a modded Canon 550d in a Skywatcher 200p- altogether I got 12 10 minute subs before clouds stopped me. I think this is the best of the shots for showing the structure of the object and the shockwaves that form its shape; the monochrome also highlights the cloud of the larger surrounding nebula. Oiii This came from the same setup and 10 more subs, this time with an 8.5nm Oiii filter, and a 99% moon on 13th October. The only Oiii visible in this shot is around the nebula itself. The signal was quite a bit weaker than the Ha; this picture was created by discarding the Red Channel and then combining equally the Blue and Green using Pixelmath in Pixinsight. Bi-colour Finally, it’s all brought together using the same process- this time feeding the Hydrogen into the Red channel and the Oxygen into the Blue and Green. I spent quite a bit of time playing with this one. Just feeding the data in, the red was total dominant and I progressively multiplied the Blue and Green until it was more prominent (the eventual multiplier used was 2). I also experimented with trying to change the balance to bring a little more colour into it, but that also artificially unbalanced the star colour so I decided to leave it even, which makes the Oxygen mostly white. I’ve really enjoyed taking these different views of the same object and learning about it. The nebula itself, 5,000 light years away, is 25 light years across and is caused by fast stellar winds erupting from the Wolf-Rayet star visible at the centre of the nebula. It’s thought the star will imminently (in astronomical terms) become a supernova.
  6. 6 points
    With a 90% moon Ha is pretty much the only option available so this is 58 (out of 60) x 300s of Ha taken with a Samyang 135mm + ASI1600MM-Pro unguided. I've struggled to know what this should look like in terms of surrounding dust/nebulosity. Images of NGC7822 vary widely on the internet with anything from pristine blackness surrounding the NGC7822 to so much surrounding nebulosity it is almost difficult to distinguish the target. I've been guided by the apparent dark/near black patches towards the centre of the nebula. The image was calibrated and integrated in APP, then processed in PI (ABE and HistogramStretch) followed by a very small amount of noise reduction in PS. The image is cropped a little to remove some dodgy looking stars in the corners - an ongoing issue with my 135mm+1600 setup I am failing to solve Thanks for looking and as ever comments and criticisms are alway welcome. Adrian P.S. There is a funny little curved artefact near the very top of the image; any thoughts on what that might be? I removed two lights that contained satelite trails but this feature is only distinguisable on the stacked image.
  7. 6 points
    I should think if it was dark green he may have got away with it. I wouldn't mind it overlooking my garden - as long as I was allowed to use it as well .
  8. 6 points
    Once again I was confronted with clear skys and a bright Moon. I do not want to start a big project before I switch OTAs, but I could not not image. So, I decided to pick a target that I would only need 2 filters--the Western Veil (Witches Broom). the problem was--it wouldn't fit in my FOV. So I decided to use my camera angle adjuster for the first time.......I did not realize there would be a significant downside. As you can see from the image--its a perfect fit, but my E, W, S, and N directions were totally screwed up!. I manually frame my targets, and when my sensor is at 90 or 180 degrees, movement is easy--left is west, right is east north is up and south is down (the E and W are reversed in the west side of the meridian. Now, movemenst were at awkward angles and it was very difficult to move the stars in teh directions I wanted. This made me really wish that the CAA was connected to teh system, that the planetarium software would know the angle and adjust the slew directions accordingly. Anyway, Here is teh start of the Witches Broom--69 300 sec Ha subs. I definitely need more data, but I am encouraged. As a bonus, my target hit the trees at midnight--leaving me with 5 hours of clear sky. So I decided to pick a target and leave the rig running while I slept--putting my temperatute compensation feature ob my focus controlller to the test. I chose the Horsehead, as that makes a nice mono image. The image contains 50 300 sec subs. I want to collect more data for this as well, but I am quite satisfied considering I did not adjust focus over a 5 hour period--and I used all 50 subs. I will no doubt look tehm over and discard teh worst when I get more data--but for now, the 50 will have to do. I did teh same for teh Viel as well-used all subs without really looking at them. By the way--Alnitak was so bad I cropped it out. the star was perfectly resolved, small and round with its companion a good distance away--but the microlensing effect made it look like there was a cloud of perfect circles floating around it--like ballons. No doubt reflections or ghosts images of teh star itself--perfectly round, contained within a square. Not sure what teh square is, but I don't like it. So I cropped it out. I can see the end of teh AI 1600. Even teh star in teh Viel has faint microlensing--and that is a 4th magnitude star. ZWO should be ashamed.
  9. 5 points
    Another clear spell saw me out there looking along the terminator just before midnight, when I stumbled across Atlas and Hercules. The shadows from Atlas indicate a very jagged crater wall made up of several major peaks. The floor of Atlas is very rough indeed. Atlas would appear to have steep terraced walls. Hercules has a much gentler appearance and has big crater within its floor. Both these craters seem sit on a raised plateau of very rough terrain - need a decent all terrain quad bike to scoot around this area as well as some serious climbing kit to reach the sharp peaks. To the right of Atlas is a much eroded elongated crater, presumably much older than Atlas and Hercules as well. Two craters near the terminator have very long shadows - I assume this means they have high walls and judging by how black the crater floors are this would seem to confirm this idea? The mountain tops in the blackness of the night gradually got dimmer over the 1.5 hours I watched this area as the sun gradually dipped below the lunar horizon...... Mike
  10. 5 points
    Thanks Mick. Here's a process I finally finished that I'm (somewhat) happy with of M45. I took this data at the end of January and only just finished improving my skills enough to reach this!
  11. 5 points
    Half hour each in RGB binned 1x1 and 2 minute exposures. TEC140 and Atik 460 with Astrodon RGB. No separate luminance. I added the spikes with a Noel's action to fat stars only. It looked boring without them.
  12. 5 points
    Yep, get planning permission and you can erect all sorts of eyesores and housing estates on the Green Belt Dave
  13. 5 points
    Should have gone through planning in the first place, as I did when I was first considering something similar, usually there is a pre-planning clinic to see if you're going to need planning. But even so it looks like he's fallen foul of the sort of neighbour who just objects to everything. Needing sunglasses forsooth, pure tosh.
  14. 5 points
    Imagine that. No experts ruining the planet! When are they all leaving?
  15. 5 points
    Delivery person has just been and delivered a very well protected item. To say I am happy would be an understatement. Please say hello to my OOUK OD150 f5, 1/6 wave mirror. This is what I (and others)consider to be a Goldilocks scope. So looking forward to giving it first light. Described as Mint by the former owner, I think it should have been Mint New, In super unmarked condition. Also shows how from my 2007 10" to the 2009 6" how OOUK upped the game on general finish of the scopes. One thing to note far slimmer than my previous SW150p f5's that I have owned and lighter too.
  16. 5 points
    Inspired by AlexBB's stunning recent Iris Nebula image I thought I'd have first attempt at this one too given the brief two days of relative clear skies at new moon between the otherwise constant rain. This is approx 15 hours over two nights (bortle 5), mostly luminence with about 90 mins each for RGB. 2 min exposures at unity gain with the 1600MM & Esprit 80. Interesting figuring out how to tease out the background dust, much still to learn, hope to add more for higher image quality in the future.
  17. 5 points
    SGL has the 'clubs' feature now so if any of these astronomy related groups wanted to use SGL to host their content / discussions ongoing, please get in touch (contact@stargazerslounge.com) and we will see if we can help.
  18. 5 points
    I know this is never going to win any prizes and at the moment I am only playing getting use to my new mount and 183MC camera, not as if I used the 071 Pro very much, so that hardly old and for the bin yet. This shot of M16 was started when it was at 23 degrees above the horizon and finished at a shade above 15 degrees, this is about an hour of 3 minute subs and all the other bits. I am really rather surprised with the result as it is usable if not great and added to could well improve it even this low down. Every frame used Considering where it was in the sky the guide from the CEM60 is not too bad either. Didn't look pretty though. Had another play with it and got a bit more out of it I feel. Alan
  19. 5 points
    General view of observatories and the moon in a sky that has been clear all night. Regards Andrew
  20. 5 points
    MWP1 (Motch-Werner-Pakull 1) also known as The Methuselah Nebula is a rarely-imaged faint bi-polar planetary nebula in the constellation of Cygnus. It is one of the largest known planetary nebulae - spanning some 15 light years. It lies around 4,500 light years from Earth. Astrodon Blue: 16x300" Astrodon Green: 16x300" Astrodon Lum: 18x600" Astrodon Red: 16x300" Astrodon Ha: 35x1800s bin 2x2 Astrodon OIII: 37x1800s bin 2x2 Total Integration: 43 hours Captured on my dual rig in Spain. Scopes: APM TMB LZOS 152 Cameras: QSI6120wsg8 Mount: 10Micron GM2000 HPS
  21. 4 points
    But you don't need planning permission to floodlight your, and everybody elses, garden like Wembley Stadium
  22. 4 points
    Poor devil. the best thing he can do is covert it into a ROR as it was just the white dome that was the problem. Looking at the photo of the dome from next door's garden, my own dome looks exactly the same view for next door and is a white Skyshed POD dome so not fibre glass. I did not get permission to put it up as I was told by Altair Astro who sold it to me that you don't need planning permission for a POD because it is classed as a temporary structure apparently. BUT as it is right up against next door's fence, I took the precaution of talking to the neighbours, and making a virtual picture of what it would look like. Their reply was, "Well every-one has their hobbies, but we appreciate you asking us first". So hopefully even if they move and new people come there with it already being there, it will be OK. It's been there since 2010. Carole
  23. 4 points
    And why when any things like this are reported in the press, do they call it astrology.... so annoying...
  24. 4 points
    Good seeing today. Two excellent proms on opposite sides of the disc, faint but very detailed. Several other minor projections.
  25. 4 points
    Packing up now. Very happy with just ove r 5 hours worth. Once again, the autostack from DSS Live, with a simple stretch.
  26. 4 points
    Scope fettling - the ideal antidote to a rainy evening If this weather keeps up, we will all have the best collimated, most highly polished and optically clean instruments anywhere on the planet !
  27. 3 points
    Just found this story on the Mail website - hope its not one of our own SGL members.
  28. 3 points
    M31 from home after about 6 hours with the Tak collimator last weekend. Slighty better stars but still the odd shape on one or two of the brighter ones.
  29. 3 points
    Hi everyone, despite there being a bright moon last night i had to have a play. This is a one minute sub of ASASSN taken through my ODK 12 as it is passing the star Mirach in Andromeda. No faint tail showing on this one,i think the Moon put paid to that. Thanks for looking, Bob.
  30. 3 points
    Perhaps he could paint it with camouflage paint Dave
  31. 3 points
    Flamin busy body neighbour - while I agree a green dome would have been a little less obtrusive, I do feel some people have too much time on their hands and complain about pretty much anything and everything!!
  32. 3 points
    Knowing my luck I would move to another planet and that would be hit and the Earth would survive. Steve
  33. 3 points
    Why not paint it matt green?
  34. 3 points
    Typical dramatic daily mail, it's not a 12 ft high dome, 12 foot high in total. I'm glad I dont have neighbours like that. ' Melvyn Thurlbourn put the 12ft high dome on top of his shed in Cambridgeshire '
  35. 3 points
    I have my tinfoil hat so I will be fine Alan
  36. 3 points
    I regularly see such "shock horror" headlines from the Excess come up on my google feed but studiously ignore them as nobut clickbait. Same as "worst winter for 60 years" nonsense.
  37. 3 points
    Got my cladding all on now, the roof is boarded and waiting for the roofing felt, thats getting done later today. I have fixed latches to lock down the roof. The pier is almost finished it just needs painted. The brake disc adapter is connected and level and works perfectly. I still have the door and some flooring to sort out. The skies were clear last night and I couldnt resist try it out. So connected my mount and telescope and everything worked like a dream. Cant wait to finish it and start enjoying it.
  38. 3 points
    Damn...I was hoping to get some double glazing phone calls...
  39. 3 points
    Looks like a 2" nose piece to screw into a T ring. Dave
  40. 3 points
    To be clear folks, it wasn't phone numbers I suggested it was just numbers i.e. me 1, next person 2, next person 3, at the moment, next person should be 8, hope this makes sense, Damian is 6, Calvin is 7 etc. feel free to remove phone numbers for privacy. David
  41. 3 points
    Around ten years ago I spent some time solar observing with a friend using his solid oak observing seat that somebody had handmade. It was height adjustable, with an adjustable footrest, and made it very comfortable to sit and let the tracking mount follow the solar sphere as we observed it. However for the following few years the gear I took to star parties tended to be imaging based, so no need of a dedicated seat for observing. These days though I just pack my trusty 18" Dob, and at the recent Kelling Heath SP decided to cave in and get a Tracer 12V battery while they were on offer. Combined with the tracking platform that sits under the dob base the battery pack really completes my push-to setup nicely, but I do tend to find that slightly crouching or bending a bit is causing me more and more back pain lately, indeed I missed a whole clear night of observing during the main star party due to the pain. This in turn leads to sometimes cursory observing on my behalf, sometimes missing out on the finer points of a particular object. So when a second hand oak observing chair came up at the boot sale on Saturday morning at Kelling, I thought that the £80 asking price might be money well spent. The fact that I am a sucker for solid oak items bore almost no influence on the decision Well, I have to say, what a difference! Being able to sit comfortably and just observe, without having to crouch or bend or nudge the scope made a MASSIVE difference to my enjoyment of the sessions, and with a relaxed comfortable posture, I was able to spend much longer on individual targets, properly using averted vision for extended viewing, and also eyepiece tapping. It was very gratifying to slowly work my way through H beta, Oiii and UHC filters side by side, really getting to grips with the different views they present, which was especially enjoyable on the Rosette nebula, and M42. My wife even joined me at 2am one night and we stayed out until dawn, and even she commented that the time just flew by using the comfortable chair for observing. An additional highlight was the California nebula (NGC 1499), which through a 21mm Ethos with Lumicon H beta filter just seemed to go on and on, but without the support of the chair I would not have been able to observe the half of what I did of the nebula, it would have been too painful. Needless to say I am delighted with the purchase and look forward to the next trip out with it, which may hopefully be at SGL 2019 very soon, or at Kelling Heath again in November. (Pic taken with phone and a placed red light just to test the effect, I like to observe with absolute minimal light sources around! As it was, we had the whole of the bottom red field at Kelling to ourselves when everybody else left, and enjoyed a really dark situation)
  42. 3 points
    I feel that the majority of alt-azimuth mounts on the market are good for small, short length fracs. However, when it comes to longer length fracs we've got to be cautious. It's not only the concern of weight that needs to be taken into account (scope + accessories: diagonal, eyepiece, viewfinder, tube rings, dovetail) but also as @John says, the length of the tube and the tripod. Within reason the performance of this set up will be a subjective affair. If the goal of the mount and tripod is to have reasonable dampening times and smooth movements the level of toleration will vary from person to person. One of the worst visual experiences is having to deal with an unstable, overmounted, wobbly set up. My own toleration of dampening down times is therefore just about zero. Taking this into account, I don't think it is unreasonable to argue that for longer length 4" fracs cut the advertised load capacity by about 40% and ensure that the tripod is at least a 1.75" steel tripod. I feel that mounts like the SW AZ5, ES Twilight I, and Vixen Porta II, are for me too unstable for a 4" f7/f9 frac. I find them unsuited to high-power lunar and planetary observations. The AZ4 is a fine mount but I have found that with 4" f9 and f10 fracs if the supplied steel tripod legs are extended the set up wobbles too much at reasonably high magnifications. A step up from the AZ4 are the heavy duty AZ mounts like the SW HDAZ (I have one but no longer sure they're on the market), or WO EZ Touch (again, I'm no longer convinced they're on sale). I cannot speak for the EZ Touch but I prefer mounting my 4" f9 on the HDAZ rather than on the AZ4. The advertised blurp states that the mount's total capacity is around 14kg, and no doubt that's true but again, weight is not the issue but the scope's length. A step up from these HD mounts would no doubt be something like TS AZ5, SkyTee 2, Giro Ercole, or Ayo II, these would perform wonderfully with a 4" f9, for example, without fear of being overmounted but needless to say, costs are a significant step from the AZ 4. To sum: If you're looking for a decent mount for general use get the AZ4. If you can find one on the secondhand market get the SW HDAZ/EZ Touch. If budget stretches and/or you really need slow motion controls get the TS AZ5 (knowing that you're covered if ever you want a 5" frac) If you want a gorgeous set up for fracs, get an Ercole or Ayo and one of those fancy Berlebach wood tripods .
  43. 3 points
    Mod seems to work alright slightly better spacing and more diligent focusing required (ie: 2/3rds focusing). But, for just two hours - it aint bad I guess
  44. 3 points
    I did some searching and thought this might be useful, these are the colour indices for the stars being talked about, and some references. T Lyrae 5.5 (Very Red!!) Garnett star 2.24 (Red) Betelgeuse 1.74 (Orange red) 15 Aquilae 1.11 and 1.54 (Orangey Orangey ) 61 cygni 1.07 and 1.31 (same again?) Vega 0.00 (White) Bellatrix -0.14 (Blue white) Sigma orionis -0.24 (Blue)
  45. 3 points
    Looking around as darkness fell , first signs of the lunar light arriving . Looking south , still available are M11 , M17 and M22. Glorious view of Graff's in Serpens,IC 4756. Found "The coat hanger " using x10 binoculars. Half way between Albireo and Altair. Reminded me to check out " Kemble's cascade", go one top span of Cassiopeia to the left to find this chain heading pole-wise. Caught NGC 188 , the "Ancient one ", about 6 billion years old , a compact twinkle of an open cluster. Very near to Polaris. Camelopardalis showed Stock 23 , "Pazmino's cluster" at 03h16.2m +60 00'. Some lovely shapes there , including the bright Σ362. Seeing as the sky was getting light , I caught the delicate triple Σ1127 in Camelopardalis, lovely view. Had a look around at this early sky , from Perseus to Pegasus with Auriga rising . At the zenith , Cygnus and the last of the Summer Triangle. Just waiting for Orion and winter treasures and clear skies ! Nick.
  46. 3 points
    I got Venus back in 2004 so looking forward to seeing Mercury, if it's clear of course from the uk.
  47. 2 points
    My run off roof observatory is a sad sight emptied of all the kit and left draped in the cobwebs I always intended to remove. It has been an effort over more years than I care to remember populating it with mounts, telescopes and various instruments. It now sits idle and unloved. Potential fire wood. But, wait the kit sits neatly packed ready to go to a new home in southern Spain. The promise of 200 plus clear nights a year rather than the 10 or so I get in the cloudbank that is the Cheshire gap. Sunday will see the start of an adventure to load the car (very full) and set off to Eurotunnel... ...to be continued. Regards Andrew
  48. 2 points
    If you have had it over four years without complaint there is nothing they can do anyway
  49. 2 points
  50. 2 points
    So look at the moon then. I know how you really love it. up now but hopefully clear at Galloway.
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