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Showing content with the highest reputation on 08/02/20 in all areas

  1. 9 points
    Heart and Soul - 41 x 3m 3nm Ha subs, 135mm f2.5 Asahi Super Takumar lens, ASI 1600MM-Cool with gain of 139. Calibrated with darks and flats. Calibrated, aligned and stacked in PixInsight. Custom stretch. Scaled in GIMP.
  2. 9 points
    Cloudy here, so I've been seeing what I got last night under the Moon. This is 6 panels with between 3 and 5 180s subs for each panel. It looks like I will need about 25 mins per panel to make a decent image. I'll obviously also need to improve my processing techniques, but I'm happy enough anyway. It's all good practice.
  3. 7 points
    I posted a rendition of this faint cobwebby supernova remnant some time ago. It was about 18 hours of Ha and 11 hours OIII using an ASI 1600MM pro camera and a Canon F2.8 lens. As I tend to do I pumped up the volume and turned out quite a brassy rendition with Ha very much to the fore. Here's the link Anyway, I've calmed down and spent days of my life which I won't get back trying to tease out more OIII and calming the Ha a little. There has been a lot of experimentation aka trial and error, blending and unblending and reblending in PS. Masks, selective colour etc etc. I have now come up with the image below which I am happy with....I think! The biggest problem I have faced is uneveness in the background which I think is because the very faint 12bit data has simply run out of steam.
  4. 7 points
    Although I moved from my old home in SQI 18.25 Ruislip to SQI 21.66 Bride Valley during December 2018, it was only in January 2019 that I started imaging using my Star Adventurer and old SLR lenses. Since then I have managed to get my telescope set up for "proper" DSO imaging. So, with no more ado, on to the images The first image was a wide field of Orion with a 35mm f/2.8 Leitz Elmarit-R and ASI1600, in HRGB Unfortunately I didn't see a fine telephone cable that ran through my field, giving huge star spikes. Stil, it's the first I did so here it is. Pleased to have picked up Barnard's Loop. Then swapped lenses for a 180mm f/3.4 Leitz Apo-Telyt-R, and went for a close up of the Sword and Flame in HaLRGB. Unfortunately I accidentally turned the aperture ring when focusing for the L so it was at f/5.6 instead of full aperture, giving huge spikes. Exposures in these cases were, I think, 90 seconds to avoid trailing, with gain at 0. There was then a long gap until the beginning of May while I set up the HEQ5 and Megrez 90 for imaging with a 0.79X reducer and ASI1600, in time (Just) for Galaxy Season, managing to image Markarian's Chain. I had tried this from Ruislip, but the results were rubbish. This is a basic LRGB image, no point adding HII as there isn't any to speak of. I just managed to include M87 in the lower left corner. Then yet another long gap until the beginning of August, when I had the main rig of TS 130mm f/7 Apo with SX694 on DDM 60 set up on the platform I had built for it. My target was now the Crescent Nebula in Cygnus. After chasing blind alleys with [NII] (I thought, as a WR object there might have been significant signal) I ended up with a HOO rendition, blending HII and [OIII] for the green channel. This gave what I consider to be best rendition, though not scientifically accurate. Then into September and revisiting one of the first NB targets I had tried, M27, the Dumbell, back in 2014. This was another HOO, due to running out of time. I hope to be able to add [NII] next year as I know this target has a strong signal. I just managed to pick up some of the outer shells. Another project for next year. I then left the local nebulae for something a bit further away, the Deer Lick group and Stephan's Quintet, which would just fit on the SX694 sensor. This was a long run, managing to gather 17 1/2 hours data in LRGB, my longest to date. Again I had tried this from Ruislip but the results were so bad that I binned them. My last image (Phew!) was just into this year when I had another go at M33, the Triangulum Spiral. This has quite a low surface brightness so is more difficult than the nominal magnitude might suggest. For this I added 2 hours HII in 10 minute subs. I had swapped cameras for the ASI1600 again, and put a 0.75X reducer in the train. This is 10 hours of HaLRGB as 2 hour stacks of 10 min subs. So there we have it, a somewhat mixed bad of seven images over the year. What I have found is that there really is no substitute for a dark site, as even NB imaging is much easier and rewarding, and for LRGB there is no contest. C&C welcome as always, and I will try to provide more information if I can.
  5. 7 points
    Caught the Jelly a few weeks ago. Been testing a little different NB combinations and except the std red I ended up with this. Astro-Tech-AT-65Q, ASI-1600M-Pro-Cool, HA 19x360, O3 23x360, S2 16x360
  6. 6 points
    Here is a proper save of the image after scaling in GIMP (the full scale image is 4656x3520 pixels and 32MB).
  7. 6 points
    Here's something you don't see on this thread very often - the Moon. This shows off the capabilities of the 130P-DS pretty convincingly.
  8. 6 points
    Finished. Here's a screenshot with STF auto-stretch in PixInsight.
  9. 6 points
    Looked beautiful over Manningtree a few minutes ago...
  10. 5 points
    Quick one through the scope. Lovely!
  11. 5 points
    Heart and Soul - 52 x 3m 3nm Ha subs, 135mm f2.5 lens, ASI 1600MM-Cool with gain of 139. Calibrated with darks and flats. Calibrated, aligned and stacked in PixInsight. Custom stretch.
  12. 5 points
    Here's the result - stack of 52.
  13. 5 points
    Seeing has been better but I'm well pleased with the detail. Always a nervous time with a new scope but pleased to say all looks very well.
  14. 5 points
    Many thanks for being so welcoming, it is most appreciated and it's quite novel to find a hobby where 'newbies' aren't shunned. Fingers crossed for the weather !
  15. 4 points
    Stunning looking moon! I Hope the storm holds off and we all get to observe it later!! It's currently looking straight through my front window. Baz
  16. 4 points
    This was posted on the CN forum a few days back - nice to hear that Skywatcher have sorted the ED150 now. This UK owner is certainly getting some superb lunar shots with his https://www.cloudynights.com/topic/693379-first-light-with-a-skywatcher-ed150/#entry9965092
  17. 4 points
    I've added 2 more panels. The panel with m42 only has 2 x 180s subs in. The panel at top right has 6 x 180s. I've got a suspicion that the top right should be almost black if m42 is displayed overblown as it is. I'm having to do a lot of brightness and contrast adjustments to try to match things up.
  18. 4 points
    Tonights almost Full Moon - A nine pane mosaic each from 200/1000 frames through the ED120 APO and ASI 120mm mono camera.
  19. 4 points
    Custom stretch is not much better! Going on to stack of better subs but fewer...
  20. 4 points
    Thats a great shot. So much detail. You can really see the difference between this shot and mine from my phone. Baz
  21. 4 points
    Quick snap / edit with a long lens:
  22. 4 points
    In spite of a 97% illuminated moon which gave the sky a milky washed out look and killed off all but the brightest stars visually, I continued looking at faint open clusters in Cassiopeia. Although gradients were sometimes a struggle to suppress, it never ceases to amaze me how much is visible using EEVA techniques under such conditions (and indeed how much colour can be extracted). Here are a few captures live at the scope. N is up, all were composed of 15s L, R, G, B subs, live-combined in LAB colour. NGC 436. This is apparently a young cluster similar in age to Alpha Persei, full of blueish stars, and very different from the other clusters I observed. Berkeley 64. I'm not sure of the current status of this cluster as it is not mentioned in a recent (2018) GAIA-based survey of likely clusters , so it might be a chance grouping. Earlier data give an age of 1 billion years and a distance of 12-13000 light years. There is in fact little to see at the listed coordinates, but I can see a potential cluster nearby, and centred in my image. (The listed position is well to the right of centre, near the red star). There is still quite a lot of work to be done finding correct coordinates for some of these less-visited clusters. Having plotted all the GAIA data for the Berkeleys, it seems that 10-20% are not in the catalogued position! Berkeley 2. This one seems more definite with 93 members (as of the 2018 study), a distance of 22000 light years and an age of around 800 million years. When this was building up on the screen the most notable features were the 2 arcs of stars rather like the Antennae galaxy tails, merging at the orange star in the centre of the cluster (the bright foreground stars are not part of the cluster). The most enjoyable sight for me was Berkeley 8, both for the cluster itself and the field of foreground stars is is embedded in. Some of those foreground stars form a beautiful curve and display a remarkable range of colours which inspired me to look up their types. Unfortunately, very little data appears to be available on a cursory search. Having observed 37 Berkeley clusters in the last week, I'm beginning to notice some common visual elements (although they are probably ilusory!). Many of them possess arcs of faint stars. For Berkeley 8, these arcs emanate from the centre like the legs of a malnourished starfish (although I count 6 of them). Berkeley 8 is a very old cluster, estimated to be 3.2 billion years old, rich in members (252), but relatively close (for a Berkeley) at around 11,600 light years. cheers Martin
  23. 4 points
    Thanks for the update Adrian. I am keeping my eye on the weather and am looking closely at all the different long range forecasts. I will contact Lesley later on closer to the date. I think it is a bit too early to say much at present. It is still two weeks until the 23rd and the actual start of the Galloway Star Camp and plenty of time for the site to really dry out even more. The wind from this coming storm will help the ground dry significantly. I will have a better idea in about a weeks time, then I will be in a better position to update everyone about our prospects. It would be appreciated if those who attend early can get in contact with me (PM, Text) or via this forum with on site updates. Just keep praying to the Sun and Fair Weather Gods I will be there from the 23rd regardless and hope to see as many faces as possible. Don't know about Jaffa Cakes , but the "amber nectar" will definitely be around and is a prerequisite to any attendance at Scotland's Premiere Star Camp warm room,tent,caravan, errr, even the field..... As has happened at many previous Star Camps there are spells that astound and contradict the weather forecasts giving stunning views of the heavens. Looking forwards to seeing everyone. Derek
  24. 4 points
    Hi, I've not done lunar imaging in a while so I'm fairly happy with how this one turned out, no gaps! This is a 14 panel mosiac taken at 1300 focal length with a ZWO AS224mc, Skywatcher 130PDS, x2 Barlow, and a Skywatcher HEQ5. I used a ZWO 850nm filter and filmed in mono 8. I actually focused on a star before imaging using FHWM values instead of eyeballing it on the moon. Software used was Sharpcap for capture, Autostakkert 3 for stacking, Microsoft ICE for the mosiac and Pixinsight for processing. Each panel used the best 5% of around 4000 frames. Comments and criticisms welcome as usual.
  25. 4 points
    Melotte 15 been a while on this with our lovely weather and the newish 10s quattro HA -3-HOURS AT BINN 1 HA -1.5-HOURS AT BINN 2 OIII-1.5-HOURS AT BINN 2 S2-1.5-HOURS AT BINN 2 RGB-1-HOUR EACH CHANNEL BINN 1 FOR STARS STACKED IN DEEP SKY STACKER COMBINED IN PHOTOSHOP CS5 no darks or flats thanks for looking as you can see it still needs more data but im sick of the weather so here it is
  26. 4 points
    So last night (6th) was completely cloud free!!!...........all night!!!!! Given the fact that we have so few of these I decided to ignore the fact that there was a near full moon that was about to traverse the sky, not only traverse it, but take all night doing it and get out for some observing. It was abundantly clear that DSO's were out of the question, the moon was behaving like a Brighton FC pitch management system and bathing everything in light which meant that my targets for the night would have to be double stars and maybe some open clusters. To warm up I started with Castor, an easy one to split but still a majestic sight with the secondary slightly smaller than the primary at 5 o'clock. Next I went for Beta Monocerotis.....this is the reason for this post. i cannot believe that I have not looked at this before, if you haven't seen it yet, it needs to go on your bucket list. it is actually a triple star system and is by far, the most beautiful multiple star system i have observed. the three stars were centred in my new Vixen 4mm SLV and presented a curved line from the largest on the left to the two smaller ones curving to the 1 o'clock position. My initial observation was with the finder scope where it presented as a single star but when I moved to the main scope and focused it blew me away as three stars suddenly appeared. Two further, yet unidentified (by me) stars, were also visible in the field of view, right at the edges, one at 6 o'clock and one at 11 o'clock. After staring at Beta Mon for 30 minutes I moved on to Alnitak in Orion and Mekbuda and Mekbuda in Gemini. Alnitak is also a triple star system but i could only split into a double, the primary is a binary but I was unable to split it. I moved onto the Double Cluster, NGC's 884 and 869. For this I used the Celestron Omni Plossl 32mm. I have to say that I am really impressed with this eyepiece, it's worth every penny of it's cheap price tag, I find it gives good crisp, sharp images. Both clusters filled the fov with (I might have this the wrong way round) 884 to the top left and 869 to the bottom right. NGC869 especially was a very rich star field with hundreds of stars easily resolved. I tried a couple of galaxies as well, M33 being one of them, but the moon won that particular battle, I didn't get to see any galaxies, they were completely washed out by the moon. To end the night, I thought I'd have one go at a planetary nebula, knowing full well, I had no chance with the moon sitting on my shoulder grinning away. So I slewed to NGC6543, The Cats Eye Nebula......Wow!!....there it was, centred in my Vixen 6mm, I hadn't even bothered fitting a filter as I didn't think there was any point in bothering. The nebula was clear, but small, in my fov so I quickly fitted an Astronomik UHC filter (superb by the way) and I could now see a disc with a blue/green haze against an ultra black background. I'm really glad I took the gamble to have a go because the result was beautiful, a stunning planetary nebula. By now it was midnight so I packed up, having had a great 4 hours......just shows, that the moon is no reason to not observe!! Thanks for reading
  27. 3 points
    This system consists of two yellow giants having types G0III and G8III (some sources give K0III), similar masses and brightness. The orbital period of the components is 104 days. The fact that one of the stars has a later spectral type is very convenient . It has stronger spectral lines of metals, including sodium. This allows you to immediately recognize which star is approaching and which is currently moving away. I made 3 observations so far with using a DIY 3D printed LowSpec spectrograph in the version v2 designed by @Paul Gerlach and a 1800 l/mm holographic grating. Based on these observations, the spectral spread for both observations for the sodium line is 0.79 Å (0.079 nm) or 4 pixels, which gives a difference of radial velocities of 40 km/s. Assuming that component A belongs to G8III and component B to G0III: 2019-12-03 component A was moving at relative vr to the barycenter of the system of -20 km/s and component B was moving at a relative vr of +20 km/s. 2020-01-23 component A was moving at a relative vr of +20 km/s and component B was moving at a relative vr of -20 km/s. I called radial speeds relative, because the radial velocity of the Capella barycenter to the Solar System wasn't included. I took the radial velocity of the Capella barycenter into account and I received this phase plot: The background is the plot of radial velocities from paper: M. Weber, K. G. Strassmeier, 2011, The spectroscopic orbit of Capella revisited https://arxiv.org/pdf/1104.0342.pdf
  28. 3 points
    Arriving home from the grocery store around 5:30 to a wonderfully bright Venus but a bank of cloud around the horizon, I thought that Mercury may be lost already. Stepping into the garden, I quickly located the little planet above the clouds. I popped inside to grab the Equinox 80. With the help of the Nagler zoom, I was able to see the phase, around half, of the planet. Moving up much higher to see the glistening diamond that is Venus. Here I could see a planet that is starting to resemble a small moon. Again it’s phase was clear to see. In between these two planets was a third planet. To see this planet, I would need to bring out my 10” dob. The key to finding the ice giant would be identifying Phi Aquarii. SkySafari and the view through my 9x50 RACI helped to find the star. At 133x, I was confident that the pale blue dot that could be seen was Neptune. My 5 year old daughter had come outside and asked to have a look. She knows her planets and was pleased to see Neptune. However, her priorities were now on drawing with chalk on the path. I was requested to lend my artistic skills to this endeavour. “Just one more planet” I replied. Before long a pale green disc was floating through the eyepiece. Father and daughter enjoyed this sight before moving onto pavement decorations. After some time, I was left alone as it was time for the children to eat. The grown ups enjoy a date night on a Saturday night. I set my sights on another solar system target, the comet C/2017 T2 (PANSTARRS). I left the solar system briefly through using the double cluster as a starting point. Just as I was trying to spot the comet, light cloud arrived obscuring my view. After a few minutes, I decided to pass some time putting bikes and various other items away. Despite a light haze, I thought the big bright Moon would be worth a look. The terminator revealed a distinct mountain peek. Very cool. I couldn’t help but wonder if it would be possible to view Earth’s mountains from the Moon in a similar fashion. Looking up, I noticed that the skies above had cleared. Resuming my search for the comet, I was surprised by how difficult it was to find. I have seen it many times before but the bright moon was making it quite tricky. Eventually the right magnification/exit pupil was found and the comet revealed itself in averted vision. It was nearly time for bedtime stories before the grown up meal. For a final flourish, I quickly sought and found the asteroid, Vesta. It shone brightly and clearly among the stars. Four planets, a comet and an asteroid all before tea. I came inside with that wonderful energised feeling that a good session can bring.
  29. 3 points
    A swift Venus image from this evening - 200/5000 frames using the ED120 APO, 2.5x Powermate and ASI120mm mono camera in truly awful seeing!* But it is my first Venus image for a few years so I'm happy with it. * The seeing was really bad as I had several laptop crashes which I eventually found to be caused by a dodgy USB cable. It meant that by the time I had sorted everything out Venus was down on the neighbours rooftops with the resulting severe boiling and heat haze.
  30. 3 points
    @Damien1975 you seem to be trying to find doomsday scenarios where, by all reasonable scientific accounts, none exist. The most likely scenario is that Betelgeuse will continue as a variable star for years to come, but even if it goes SN it does not represent a threat to us.
  31. 3 points
  32. 3 points
    These are my highlights of 2019. All taken at around 500mm focal length with Tak Epsilon 180ed and/or SW ED-80, on EQ6-Pro.
  33. 3 points
    Only 3 photos for me this year (!), two of the below are detail shots, but I'm pleased with what I managed - loving my long focal length plus narrowband detail Rosette (HOO): Ced 214 (SHO) + detail: Swan (HOO) + Ha mono detail: Equipment as per sig
  34. 3 points
    Reverting to OT... I spent some time this afternoon/evening playing with my Intes 6” Mak and its new addition, the Revelation Crayford on the back. I managed to get Mercury through it, finding it at 42x then moving up to 250x, definitely a half disc but I was having to look through a tree at the bottom of my garden so its quality came and went, mostly went. Still, the first time I’ve ever managed to get a scope on that planet so very well pleased! M
  35. 3 points
    Oh boy, does that bring back memories ! My school had one of those in a dome which we used when I joined the after school astronomy club. It seemed a giant of a scope when I was 12 years old That was 1972 so your dating would be about right Jake The mounting used was really massive - Sir Patrick Moore used one on his 5 inch Cooke refractor:
  36. 3 points
    There is a moon up there...…………...somewhere.
  37. 3 points
    Not part of the observatory build really, but some permanent extended dewshields to interrupt the scope location laser beams have been made from 8” plastic pipe. They were made as light as possible but they have still necessitated a counter weight to be fitted to the rear of one of the saddles to balance everything out, not surprising considering where they are located. They have been flocked with the self adhesive material supplied by FLO, it’s easy to apply and does a great job.
  38. 3 points
    Well thank you all for the advice it's all been very much appreciated. I have today been to see the Skywatcher 300p flex tube synscan and found it very manageable, so much so I brought it home. Mrs me was giving me a little static this morning as I had warned her it was a big scope however she must have softened once she saw it because by the time I got the payment sorted and loaded the scope she had named it !! That's a result right there! The scope looks in very good condition tho there are a couple of marks on it there's nothing I can't sort out very easily. I have bought it second hand as it is to be a project scope and will have a good few upgrades before it is complete. Anyway the scope came with a few extras and I got it for a really good price so I have no complaints. With no more chat, here's R2-D2..........
  39. 3 points
    Had a Baader Neodynum 2” filter with a badly damaged filter cell (had welded itself to a diag) and as these filters are now over 100 quid decided to put the Baader filter in a new cell. The Baader replacement cells are overpriced to looked around for a cheap 2” filter and found a Gosky Moon & Skyglow filter on Amazon for about 20 quid delivered. Geting the Baader filter out of the damaged cell was a problem as the locking ring wouldn’t unscrew so out with the snips and cut the cell apart. Releived that the filter was undamaged and now a simple job to put it into the Gosky cell. Baader filter in the Gosky cell and remails of the old cell and the loose Gosky filter.
  40. 3 points
    Yes, we are all Astronomers and doing something silly is our 'family' trait
  41. 3 points
    Found these books in the second hand market.
  42. 3 points
    Just an FYI you dont have to visit that other site... Trevor also posted his excellent lunar images in the lunar imaging section here!
  43. 3 points
    Hi Everyone. Posting some images taken by me through the 130 PDS. Taken from Brtle 3 skies of a small hamlet in the Himalayas called Kausani. All photos were shot without any guiding help hence with limited exposure time. The capture details are mentioned on the photos itself. I am not very hands on with post processing so I simple stack the subs in DSS and later do some post processing in Lightroom only before stamping the details in Picasa.
  44. 3 points
    I was really pleasantly surprised with the results of some lunar imaging I did last night as the seeing appeared variable. Scope is the C8 and camera the Altair GPcam V2. I also used a Baader longpass 610 filter. There are generally around 500/2000 frames stacked. The wider field shots are at prime focus. I added a 1.5x barlow for the close ups.
  45. 3 points
    There are a number of Messier objects which are low in the sky for me. The bright large open cluster M48 in Hydra is one of these, and I had never imaged it. Although the weather at the moment is extremely unsettled, there was a clear spell forecast last night (4th February), so despite the presence of a bright (77%) Moon I decided to have a go, with this result. QSI683 on TMB105 refractor with TSFlat2 and SX AO unit. Luminance 12 x 5 minutes, RGB each 7 x 5 minutes, all unbinned. Larger version on my 'Latest' page. Cheers, Peter
  46. 2 points
    First light today for my new Baader Herschel wedge. Grabbed an hour before the sun disappeared behind my neighbour's trees. Really enjoyed being out in the day. The seeing seemed pretty poor but I saw a bright area near the southern limb in moments of steadier air which was interesting. Faculae? Not 100% sure of the terminology yet. Mainly used a pair of 20mm TV plossls with the FOA-60Q and a 2.6x GPC which gives about 115x. Can't wait for my first sun spot As expected the FC-76DC doesn't have enough back focus for the wedge and binoviewer, but the FS-152 should. Nice to be able to look online at a current image of the sun to check what I am seeing.
  47. 2 points
    Ear plugs Gina? Carole
  48. 2 points
    C925. first image is with the 294mc pro and 0.63x reducer, the rest is with the 385c without reducer and a few with a 2x barlow at bin 2.
  49. 2 points
    Only the second proper play with the new cam. Both images were best 1500 frames of 2000 stacked and processed with PIPP, AS, Registax and GIMP Copernicus:- Gassendi:- Thanks for looking, i think (hope) i got the crater names right. :-)
  50. 2 points
    That's a whole year's imaging by UK standards...
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