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Showing content with the highest reputation on 27/10/19 in all areas

  1. 12 points
    Woke (too) early this morning to find it clear as the RASA was still set-up from last evenings efforts I decided to try a few targets. IC405 is the only one processed at the moment. The image comprises 10x 120s subs, gain 122 offset 30 on the ASI294 MC Pro. I can see that at some stage I've upset the PA but still like the image. CEM60 Standard mount, processed in PI no calibration frames. Process after integration: ABE, Background neutralisation, colour calibration, saturation and histogram transformation - saved as 16 bit tiff and 8 bit jpg. More to follow if I can stay awake...
  2. 9 points
    I managed to finish processing one more target. I'm sometimes grateful that we have some cloudy weather because I was starting to feel that I will never manage to finish processing my data Well as you all probably know this is the Elephant's Trunk nebula. I started shooting it quite a while ago, in April, with a 130PDS and I continued with the AT106 last month and this month. I managed to gather a total of 19 hours and 40 minutes worth of data. 76x300sec Ha with the 130pds and the rest of 9x600sec Ha, 36x600 Oiii and 35x600sec Sii with the AT106 I hope you like it. CC most welcome Emil
  3. 8 points
  4. 8 points
    I think this is only about my third go at LRGB - Managed to finally get my guiding sorted the other night as well, the first few subs still had trailing, so I offset the balance and voila! Perfect subs for the rest of the night. This time I followed the Light Vortex stacking guide, and did drizzle stack, so apologies for the size of the image! This is 11X5min L and 7X5min each of RGB. I think I will revisit sometime as I don't think the red channel is properly aligned - as the RGB was not drizzle aligned I could not get Pixinsight to register the RGB data against the L until I rescaled the RGB to the size of the L, thought it would just have done this itself? Anyway, any comments etc always taken, have I gone to far/not far enough with any of it....
  5. 7 points
    I've been banging away at Sh2-101, the Tulip Nebula in Cygnus, for the last few clear nights shaking down my new CEM40 mount. Initially I imaged this with my Tak FSQ85 but I wanted to see how the mount handled my TS130 Super Apo. Focal length is still only 860mm and the whole rig is 12kg (26.5lbs) i.e. at 2/3rds of the rated (usually interpreted as for visual) payload capacity so this wasn't pushing the mount too hard but I didn't lose a sub to bad guiding over the three nights I captured this data. My processing skills are coming back slowly but it feels I've still got a long way to go... mostly processed in PixInsight, which I am still learning, with some tweakery in PS. On the HaRGB version I ended up adding the Ha as a luminance layer partly to increase contrast but partly to make the nebula pinker (didn't think I'd ever be doing that!) but the original deep red just didn't look right to me for this target... Kit Mount: CEM40; Camera: Atik 460ex; Filters: Atik EFW2 with unmounted Astrodons (Ha 5nm); Guiding: Atik OAG, QHY 5II Data Ha: 18 x 600s; RGB: 40 x 180s of each channel for a total integration time of 9 hours. No calibrations frames at all, by the way. The low noise of the Atik 460 means that I could get away with just using Cosmetic Correction in PI without darks, vignetting wasn't a problem (no field correction in this process) and my bias frames are over-correcting for reasons I haven't fathomed yet! Anyway, Ha, RGB, and HaRGB versions and just for fun an Ha/OIII/SII version with the Ha data from the TS130 used as luminance over the colour process from the FSQ85 data. Must admit that I like the RGB version as it shows off the lovely mix of blue and red stars. The nebula is pretty bright in Ha and the HaRGB version kinda washes out the star field... As usual comments and advice welcome. Thanks for looking and clear skies.
  6. 6 points
    sunny today here in south wales, seeing fair a bit fazey but we had a good frost early, theres a nice bigish prom on the upper off going limb if you get chance. kit starwave 102f11,quatk, asi 120mc. thanks for looking. clear skys . charl prom upper off going limb quite bright. proms lower off going limb. there are other small proms.
  7. 6 points
    Few more from first light session. Process change: Initial process for these were APP to integration then PI for colour work. Horse head (IC434) 5x 120s M42 10x30s 10x60s 6x120s Rosette ngc4422 5x120s
  8. 5 points
    Fotka popełniona w Bystrem w Bieszczadach podczas zlotu PTMA Katowice 26.10.2019 składa się na nią 180x60s and 80 x 10s , ZWO ASI 294 MC Pro, TS APO 65Q, heq5 PRO synscan
  9. 5 points
    The postman didn't bring it, I collected it. Having recently sold my Lukehurst dob due to it being too heavy and frankly, not being used. I am now the proud owner of an OOUK 10" F6.3 1/10th dob. It is so much lighter and will most definitely be used considerably more than the DL did. Hopefully first light will be SGLSP next weekend, fingers crossed.
  10. 5 points
    The bright erratic subgaint variable star Gamma Cassiopeia, is encircled by gaseous material that is projected by the stars rapid rotation. IC59 and IC63 are reflection nebulae, although IC63 is considered to be an emission reflection nebula. They are each of very low surface brightness and of a notable challenge for observers. IC63 the closer of the two nebula to the star, is considered to be the brighter component. Cassiopeia is very favourably positioned presently in an autumn evening sky and on Saturday night I was able to get to a dark sky location and have a go at these. The sky was mostly clear, there was a very sharp cold wind, four winter layers felt as though they were not near enough. Throughout the session, I returned to Gamma Cas trying various eyepieces, methods. Not untypical of a very faint reflection nebula, much was also washed out by the brightness of this star (a radius 14 times that of our Sun and 55, 000 times more luminous). I was using my 14" F4.6 dobsonian and to begin used a 21mm Ethos x76. I then switched to a TV20mm Plossl to narrow the field and thus reduce the glare, I then felt that I was gaining something of IC63, averted vision assisted. When I say something it was a comet shaped feature that was very dim, vaguely discernable after repeatedly going over the same area. I felt that I could make out an arc shape, but averted imagination might be playing games. At least this evening with the wind chill there was no dew building up and I was not tired, but it proved to be a very hard observation. I cannot say that I had any success with IC59 a pure reflection nebula. A UHC might have been useful to for IC63 but I did not use a filter. Other eyepieces used were a 25mm Plossl and 10mm Delos with no luck, I also tried with and without a Paracorr for a little more contrast, so the little 20mm Plossl scored again, just as it had with the Horse Head Nebula. After this and with an OIII in place, the Pacman was positively bright and shapley, over towards Cygnus and the Veil bright and delicate. Encountering the North America and Pelican with ease, I drifted along for 68 cygni and I am certain I encountered some of the nebulosity around sh2-119, a large diffuse nebula. Much more followed before the cold and a period of cloud (which as per usual had swept away by the time I had loaded the car) determined that I pack up. Don't expect much, however It would be interesting to hear if anyone else has a go at the Ghost of Cassiopeia, on a dark transparent night. Here is an image borrowed from the internet by Ken Crawford. Second download is a sketch borrowed from Cloudy Nights using a 17" dob, providing some indication to a visual reference although at best will be vague in comparison. https://www.cloudynights.com/topic/218257-ghost-nebulae-around-gamma-cas/#entry2792504 ghost nebulae around gamma CAS - Sketching - Cloudy Nights.html
  11. 5 points
    Just a couple of shots from earlier this evening Milky way in it's full glory straight off the camera with no processing
  12. 4 points
    In my quest to become a real solar imager I have added a Baader 1:1.25 GPC to my 6" f/8 PST mods. This morning [Sunday 27th] before it started raining I captured some videos with and without the GPC. Here's the result of a couple of swift bits of processing: The image scale is the clue to whether the GPC was present.
  13. 4 points
    I wasn't going to post this as I think the best images are already here but that's not the spirit, is it ? Myself and two friends walked down to the fishing ponds at Kelling last month and had a go at the Milky Way. Surprisingly non of us got in the way of the others ! The image was processed as four distinct areas. The Milky Way sky, of course, the water, trees and the yellow bush to the right. Trying to process the image in one sweep messed some areas up as others improved. The yellow bush is blurred due to a slight breeze that was blowing and wouldn't tighten up ! The trees had no obvious form to them so they were lightened a bit to show what they were in fact trees ! 10 images shot at 20 seconds each f1.8 ISO 3200 ( not 1600 as I've said elsewhere ! ) on a 14mm Sigma and Nikon Z6. Even at those exposures there was black clipping in the bottom right corner but it didn't matter in the end. All put into my favourite stacking software, Sequator We have two bites at the night sky because much to my surprise, the Milky Way seems to show up in the pond too, Dave.
  14. 4 points
    ........ undo the mount clamps after servicing the guide camera or you'll soon discover that it hasn't slewed anywhere - which just might explain the failed platesolve .........
  15. 4 points
    Site is a hive of activity as the evening draws in
  16. 4 points
    If you decide to split ... I might be interested in the socks
  17. 4 points
    Update: went out last night and successfully polar aligned with sharpcap and 50mm finder Probably too short of a focal length but it will do for now Here's an image of how accurate I could get it
  18. 4 points
    HI Tony It isn't fully finished yet but will be in the next release. It supports LRGB from mono rather than OSC. I'm still working on a few aspects as it has meant a fairly complete redesign of the way I handle the stacks as you might imagine. L, R, G and B subs can be added in any order, as they come in, and Jocular will update the relevant stacks so colour balance will always be consistent even if the noise in any one of the bands is higher than the others. Internally all is done in LAB space which means getting the live aspect working responsively has been a challenge. Its ~ 200ms per update when using colour on my 2015 MacBook Air for the small Lodestar chip which is just about OK. For instance, any changes to the luminosity channel that come from e.g. moving the B or W points also take this amount of time due to the need to go through LAB space. Beforehand those changes took ~30ms so it is quite a hit, although if the incoming subs are all L then it is as fast as before. The idea is to really simplify the handling of colour. At present there are just 3 controls: saturation, colour stretch and colour binning. No messing around with histograms! One further integration I'd like to do before release is with Nebulosity, so that hitting a single control on Jocular results in a scripted capture of LRGB i.e. one-shot LRGB. At present I'm using SLL to control the filter wheel and captures and it works by simply naming the channels red, green, blue which Jocular then interprets as expected. Narrowband will come later still.... Here's a recent example. Best Martin
  19. 4 points
    Remote wifi set up - laptop inside - stick pc outside - c11 on g11 - hyperstar - asi178mm - pc focus control. 8 sec frames f 1.9. A chilly evening kicked off great with live view of meteor under Polaris during mount alignment. Came streaking across Polemaster cam east to west. The seeing was quite awful yesterday for such a dark night FWHM 6 to 6.5. Focus was challenge but hey I was set up. Viewed vesta and took 8 sec image then came back 30 min later to get distance asteroid traveled. Below is 30 min of vesta travel. Viewed Pegasus cluster and grabbed 8 sec frames rgb. Was quite dazzling with poor seeing when I bumped up exposure. Live stacked 20 frames each channel in sharpcap. Has good number of little blue stars around was glad to see I captured some. Really like astronomik deep sky filters. Also viewed ngc 1600 and other small targets, before fogging up. Wish was better system to swap filters on hyperstar. Right now I use built in magnetic slide so have to swap filters one at a time. This is a pain because have dew shield on that snugs the usb cam cord under. So to change filters I carefully slide off dew shield, carefully slide out filter, uncrew used filter, screw in new filter, carefully replace everything, then its back inside in warmth to re-focus remote view / image again. Why most nights I mostly stick with one filter.
  20. 3 points
    The fourth and final stargazing report from my summer vacation on Benguerra Island in Mozambique. Starting at 1:30am and finishing at sunrise, I covered a lot of the central Milky Way favourites as well as exploring the galaxies of Fornax and Sculptor, as well as numerous globular clusters and nebulae. (and a mid July view of M42!) I finished with an attempt to spot some structure in the HST. The report is on the link: http://alpha-lyrae.co.uk/2019/10/27/an-early-morning-stargazing-session-on-benguerra-island/ I set up the camera taking a lot of pics while I stargazed. Guess I was switching eyepieces at this moment! Feedback always appreciated. Hope you enjoy it.
  21. 3 points
    Brilliant......looks like it is pointing at Saturn....
  22. 3 points
    Gulp! Well, NGC7000 is quite bright, isn't it? I'm almost embarrassed about this. This is a single 10 minute sub. The sky doesn't even look that great, and it feels so damp that it almost feels like it's raining. I've changed to OIII after just one sub, so I will get some sort of image tonight. Did I say that I'm quite pleased with the new camera?
  23. 3 points
    Well I made the door but not fitted yet. In between the amazing rugby and a Halloween party it's been a busy weekend.......... I'm supposed to be Georgie out of the film It. However I seem to resemble more Brian Cox after a weekend bender.
  24. 3 points
    Fireworks don't seem to be causing too much of a problem. Here are the first 3 x 5m subs:-
  25. 3 points
    Hi Does anyone have any hints on how best to process this, currently stacked, basic stretch and curves in PI. Spent a few hours hours on it today but i feel its out of focus and noisy however i am not used to this camera as yet so not so sure what i ought to be capable of taken last night with TS 65 Quad, ZWO 183C, aprox 2 hours of subs at 100secs
  26. 3 points
    Actually--one final tweak--a reduction in saturation
  27. 3 points
    First light session with a Celestron RASA 8, Baader NB-1 filter, ASI294MC Pro. Guided with PHD2 on an iOptron CEM60 standard mount. Subs: 8 x 120s Processing via APP (to integration) then PI for colour work
  28. 3 points
    After much whinging from me yesterday I eventually managed about 3 hours of beautiful clear skies. The seeing was also pretty good. Did a tour of Cassiopeia especially NGC 457 then moved over to Albireo in Cygnus spent about 20 minutes observing this beautiful double. The pale blue companion really showed its colours last night. Spent about an hour with the little Messier clusters in Auriga. Moved on to the double cluster as always,Beautiful in my new Morpheus 17.5mm. Had some time at M45 as always. Tried to split Polaris at 18x but struggled. A good night. The main thing was to try out new equipment. Sharpstar 61 EDPH and the Morpheus 17.5mm. It looks as though there may be more Morpheus coming in the future. I thought the views with this set up were quite neutral with no noticeable CA. I think this little fast refractor was on par with a Tak 60CB I used to own. Stress level lowered for now. Glen.
  29. 2 points
    Star trails at sycamore gap, located along Hadrian’s wall. Equipment canon 6d, samyang 14mm lens and a tri pod. Thanks for looking.
  30. 2 points
    Shot his over the full moon with poor seeing. This is 400 each, Ha SII and OIII, 40 second exposures. 11” RASA with ASI1600. Baader f2 filters. When I was finished processing I notice my focus was off, but it didn’t come out too bad. CC welcome.
  31. 2 points
    @paul mc c it is indeed. You suggested this in the other thread and I was like 'great idea' so I did it. Easy thing for the kids to see. I showed them Albireo too, but it was so cold and there were just after a bath, so that was enough!
  32. 2 points
    You know you take it to the dechetterie and they take it somewhere else and burn it on a bonfire, cut out the middle man. Less carbon footprint too. saves driving that AMG all over France
  33. 2 points
    Hows this version?
  34. 2 points
    Time for a little update... My sons came to visit the other week, complete disaster on the weather front. Rain and clouds most days with very short partial breaks in the cloud, tempting us with half a dozen stars before closing in again. Uncovered a few minor issues, worked most of them, but little movement forward. Fighting .Net problems with Windows 10 "Professional" but TheSkyX looks really good. Evenything now working through it, except the dome (.Net.. arrrgh!!) driver. Still to resonve. But good news, Google Earth has updated and captured the domes !! Oh, happy days... Gordon.
  35. 2 points
    My problem was Samba not associated with correct windows workgroup now can see my windows network from rpi. thus using filemanager to edit samba conf file as admin but all ok now a bit of a learning curve Raspbian vs ubuntu
  36. 2 points
    Read a test a while ago where they measured light transmision of the latest High end multi element eyepieces and found no difference betwenn those with six or seven and those with just a few elements. They pointed out it’s not the number of ekements that is important but the coatings used. Coatings are so good now that the old belief that the fewer the elements the better no longer applies. It’s the quality of the eyepiece.
  37. 2 points
  38. 2 points
    Only 10 minutes on that HH!!! Brilliant!
  39. 2 points
    Yes I agree. I only believe the forecast nearer the time when 2 or more websites are saying the same. Ironically the Met Office seems to me to be the least reliable. Carole
  40. 2 points
    You can take the horse to water but you can’t make it drink. Not everyone will appreciate what they’re seeing. Good on you for giving up some of your own precious observing time to share with others.
  41. 2 points
    Hi everyone Disappointed with this. I think that unless you do hours on end night after night, this is never going to reveal much. But would you just look at those blue stars:) Anyway, thanks for looking and do please post your version if you've had a go; can't find much on this at this sort of scale. 700d: 2h @ ISO800
  42. 2 points
    I was out at night on holiday at the Isle of Wight enjoying the dark sky when a big grunting badger came past me, oblivious to my presence it seemed. Scared the socks off me though! I`ve got a bat detector which comes in handy to help decide if I am being buzzed by a bat instead of some kind of giant flying nocturnal insect with fangs. The worst thing for me back home is when the cat decides to jump in the observatory half way through a crucial observation and takes great delight walking on the laptop and tripping over the cables.
  43. 2 points
    Good night mukkas?...who's got the worst head?..
  44. 2 points
    The last chappie sounds a bit arrogant to me. The others sound unimpressed. Well done for trying though. Carole
  45. 2 points
    Well done for trying! It can be demoralising to get shrugs and blank looks - had plenty of this those in my time too. You never know, you might have planted a seed.....
  46. 2 points
    Hi everyone I've been trying this one for ages and maybe I'm getting somewhere at last. In my quest for blue stars, I had to go really in-your-face on this one. Any less and they turned white. Anyway, this is what Siril's -rather nice- photometric colour calibration gave me, so I'm reasonably confident it's at least in the right direction. Maybe a lower ISO would help? Any comments, particularly on the colour, most welcome. Cheers , clear skies and thanks for looking. 700d @ ISO800
  47. 2 points
    I can live with screaming hedgehogs, barking deer and contralto foxes. The flying foxes just bounce of my duvet hood over an oiled wool, bobble hat. The salopettes even take care of rabid, marauding cats of a winter's night. It's the Great White Sharks leaping clear of the pond that unnerve me. Quite honestly, that's the only reason I built a two story observatory...
  48. 2 points
    Don't joke, this is the internet there really are people about who would by the camera to get hold of your socks.
  49. 2 points
    Another effort, on 24 Oct. This time I made a stack of 100 images, which gives a slightly sharper result and (on the imaging laptop) I could see four moons and no interfering stars. Moons identified with the Sky & Telescope tool. Image non-inverted. Taken with CPC800, ASI224MC (and flip mirror).
  50. 2 points
    Here's my not very good image, with the identifiable blobs marked. This image is the 'right' way up, non-reversed. Note that with a SCT if the camera is not looking through a diagonal the image will not be mirror-reversed. Some of the objects in Stevewanstall's image are stars, others are moons.
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