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Showing content with the highest reputation on 04/05/19 in all areas

  1. 10 points
    I found this data on my hard drive-I never processed more than the Ha due to only having 4 OIII subs. I decided to give it another try, hoping that my processing had improved to the point where I could get something passable out of it. I lost some FOV due to poor framing, and the OIII subs could only be calibrated with a master dark--the flats were lost with my external hard drive. TOA 130 with .7x reducer and STT 8300 with 3nm Astrodon filters Ha: 9 30 min OIII: 4 30 min
  2. 8 points
    Many details visible across the planet, interesting to note as the two white ovals above the Oval BA are keeping constant.
  3. 8 points
    Best I can manage on a day of cloud, sunny periods and hail. 7" f/12, 2160mm, ZWO 120, Lacerta 2" , B-SC. White light.
  4. 7 points
    Hey all, Lots of clouds this morning and only ok seeing, but managed to get a little bit of AR2740 and the proms around it. It seems to have thrown some lovely surge proms later, but I'm clouded out for those. This was around 0930am Eastern when I captured these. Captured in HA, WL & CaK at various scales to compare as seeing allowed. Saw a little tiny flare activity around the spot. B&W: Colored: Equipment: C8 Edge + Aires Tri-Band D-ERF + Baader 2" UV/IR Block Filter *Daystar Quark Chromosphere + 0.5x Focal Reducer + IMX174 (HA, F21) *Baader 610nm Long Pass + Baader 6 stop ND + 2x Barlow + IMX174 (WL, F20) ST80 @ 80mm F5 + Baader 2" UV/IR Block Filter *Daystar Quark Chromosphere + IMX174 (HA, F21) ST80 @ 40mm F10 + Baader 2" UV/IR Block Filter (Full Disc HA) Daystar Quark Chromosphere + 0.5x Focal Reducer + IMX174 (HA, F21) ST80 @ 40mm F10 + Baader Blue CCD-IR Block Filter (Full Disc, CaK) Skybender + 395nm Block Filter + PST Cak Filter + Chroma 393 1A Filter + IMX178 (CaK, F10) Very best,
  5. 7 points
    morning all as of 3 min ago. seeings fazy here but the spot makes up 4 it. AR2740 I believe
  6. 6 points
    Fairly awful conditions, wind, rain, hail and the occasional patch of blue sky. I wouldn't normally have bothered, but for the reappearance of the old A/R2738, now A/R2740. A very hasty pack up when the conditions deteriorated quickly after just 2 short image captures! The usual set up for white light, Evostar120mm, Dmk21au618, X2.5 Barlow, Continuum filter. The best 15% of 1,500 frames.
  7. 6 points
    I've been a busy bee! So here's my progress pics Main part of the build is done, next I'll paint it with masonry paint, maybe put a gabion cage around it and also put some pebbles at the base.
  8. 5 points
    I can't recall if this has been posted before here (apologies if it has) but I found this short NASA movie on the recently discovered major crater under the Greenland icecap interesting. It seems that it was a relatively recent event compared with some of the major events in the more distant past:
  9. 5 points
    Last nights effort,20x500 sec,flats and bias. I have come to accept with my weak processing skills and AP skill,i am happy to record anything really.
  10. 5 points
    confermed theres jets behind the AR likely more to move onto the disc. heres a image, not too good my seeings gone pants.
  11. 5 points
    I'm still getting to grips with my new ASI1600mm-Pro, but managed to give it first light in the last week. Both images tightly cropped. The first is from a couple of years ago and was the best I achieved with my Canon 1200D under a Bortle 4 sky in the UK. A CLS light pollution filter was used. The second image is from LRGB data captured with my ASI1600mm-Pro out here in Malta under a Bortle 5 sky. I've probably over-processed it a bit and the sky may be a little dark, but I'm still finding my feet with LRGB. The stars are also slightly off-round, possibly due to some breezy gusts or the tracking being slightly off. I took 120 x 20s for the luminance and got it down to 103 after the rejects. RGB was 30 x 60s with 2x Binning for each channel. Dithering, Darks and Flats were used except for the RGB where I didn't dither. Both images were using my SW200p and NEQ6 with Orion mini guide scope and ASI120mc for guiding. I was very pleased with my first M51 in 2017, but the difference in quality with the ASI1600mm is striking. ?
  12. 4 points
    Here is my latest go with the ASI 178 and Esprit 150, just 30 x 1 min L, 3 x 3 min each on RGB giving a total integration time of 57 minutes. Calibrated and stacked in APP, processed in APP and Startools. There is a lot of noise as you would expect, but I am really surprised at the level of detail captured. I think the seeing was reasonable last night based on the APP quality scores on each sub, there were tiny ice crystals falling from a clear sky, the scope had quite a covering by the end of the session, and as it was pointing nearly straight up, there were droplets of water on the refractor lens?. The camera was at 0 deg C for the imaging. I’m still struggling with the colour balance on these images, but then I only have 9 minutes of each to play with. Thanks for looking
  13. 4 points
    So.. there's bad news and there's good news.. and some other news. Bad news: I collected 14 hrs of data so far on this project including the 7hrs I got last night. I was planning on finishing this one within the week or next but a nice big gust of wind took my entire imaging rig out (95 LBS of equipment). My scope took the blunt of the fall as my equatorial mounts ha/dec saddle pretty much snapped into pieces. My camera is fine.. the scope.. who knows. The mount..? Gotta get a new piece for the flange holding the head and tripod together. Good news: Its only 40$ to fix and shouldnt take more than 2 weeks to get the parts. Other news: Messier 101. 13 hrs of 25hrs lum data 159x300s gain: unity / offset: 21 Cem60, GSO8rc, ASI1600mm-p, Astrodon lum, QHY oag/guidecam
  14. 4 points
    Just had a look on GONG and there may be something on the oncoming limb, job to tell but here's hoping. Dave
  15. 4 points
    It’s an app for the iPad or iPhone. Find it really usefull and it has some really detailed info. Solar Monitor Pro for iPad is the best but there is a lesser version Solar Monitor 3 for the iPhone. Screen grabs from Solar Monitor Pro.
  16. 4 points
    A surprise clear sky tonight pursuaded me to get the 12 inch dob set up. Wispy cloud now and then but the impromptu session delivered some good galaxy viewing in the Coma / Virgo area and also Ursa Major, Ursa Minor and Draco. Nice run down (or is it up ?) the Markarian's Chain with 11 galaxies showing then headed up for the Black Eye Galaxy and others in Coma B. Back to the fringes of our own galaxy for the Messier 3 globular cluster (Messier's first actual discovery apparently). On to Ursa Major practically overhead so M51 was showing two strong cores and more than a hint of spiral structure. M101 also showing well as a large somewhat unevenly illuminated patch with hints of a knotty structure. Ursa Minor and Draco revealed more galaxies (didn't note which I'm ashamed to say) but the Cat's Eye Nebula looked very bright and sharply defined with it's central star gleaming. Hercules had cleared the conifers so M13 and M92 globulars could not be ignored. Both looking wonderful at 199x and 265x - close to their photographic images with the 12 inches of aperture. Backing off the magnification a little to catch galaxy NGC 6207 in the same field of view as M13. Finished the session with the good old Ring Nebula as Lyra moved out of the Bristol skyglow and finally a Summer favourite - Albireo in Cygnus, with strongly contrasting coloured stars despite it's relatively low altitude. Post-session Googling found this very recent Sky & Telescope piece on the Markarian's Chain which might be helpful for those who wish to explore this rich area of the sky - and now is the time to do that ! https://www.skyandtelescope.com/observing/yanking-markarians-chain/
  17. 3 points
    Hi all, I know I need to improve on this but had to share my first telescope image of M42 taken in January with my Orion UK 12inch f4 Newtonian
  18. 3 points
    This is 500 R G and B stacked together taken using a Takahashi FC100-DF and ASI1600. Blue was oversaturated to show the titanium rocks on the Moon. Comments and feedback are always welcome. Higher definition here: https://www.astrobin.com/full/402887/0/
  19. 3 points
    90s exposure, gain zero, temperature -23.6°C.
  20. 3 points
    Managed to get away to Pencelli for 10 nights. The first 4 nights and last three with Cath, so I'm happy with that. The last two nights have been very clear here, so tonight I'm hoping to have a session with a new system. I have been trying to put together a weekender kit for when I'm away on off the cuff weekends with minimal gear. I wanted to be able to use just a tablet and have everything connected by WiFi rather than a laptop and loads of cables. I have so far got my WO Zenithstar 61 APO mounted on the AZ GTi. The Polemaster is connected to an Android app, all tied in by WiFi with ASIAIR. Although ASIAIR has a comprehensive catalogue of GoTo targets, I miss not having SkySafari Pro 6. I'm at a loss to how connect it to the system. The main camera ASI1600MC and the ASI 120mm mini guide scope are both powered through ASIAIR. So far so good. Everything powered by a small 12v power bank and 12.1 Samsung tablet. It's 20.30 and I'm just waiting for Polaris to show. Wish me luck.
  21. 3 points
    Made an early start as the forecast looked most promising at around 7am. Didn't expect to find anything worth seeing / imaging so it was nice to find a new AR on the limb. And then when I ramped up the exposure I found some proms to play with too First up white light, FD via DSLR, Lacerta wedge & Continuum filter and then close up and granulation via ASI178 / Barlow / Continuum / UV IR cut Then some Ca-K, the usual 6 pane full disk followed by proms and close up. I also tried combining a surface shot of the AR with a prom shot of the same area. Finally got the PST out for a look in H Alpha. Clouds were starting to be a nuisance by this point so grabbed a couple of shots quick before packing in for the day.
  22. 3 points
    It's like an astro saxophone
  23. 3 points
    Another clear night here oop North. Being bank holiday i thought i`d make the most of it. I`m starting a new job tomorrow so its early nights from now on...? Best night of the 3. Crystal clear all night. So here we have an un named object as far i know. Saw it on a Cygnus mosiac image and thought i`d give it a bash. Modded 450 d / Samyang 135 mm f 2 @ f 2.8 / 12 nm Ha clip filter / Vixen GPDX with skysensor 2000 pc. 50 x 4 mins @ iso 1600 (unguided). Captured via BYEOS. Stacked in DSS with calibration frames. Processed in Photoshop. Thanks for looking Alan
  24. 3 points
    Damm the clouds. Just when I think it’s going to be clear another cloud gets in the way. And that’s when the wind isn’t trying to blow the scope over. One rubbish smartphone image but at least it shows there is a spot to be seen and did get to try the Bresser 127 Mak.
  25. 3 points
    I got over 2 hours time of lapse footage of that region ? it was really active with flares earlier this morning Currently moved on to imaging the spot itself. Screenshots:
  26. 2 points
    Bresser Messier 127mm F15 Maksutov Just bought this OTA as my grab'n'go planetary scope. ? Chose it over the Skymax 127 for one main reason. The Bresser is a full 127mm aperture, not only 118mm like the Skymax. Also has a bigger primary and a smaller central obstruction. Tube is bigger in diameter than the Skymax to accomidate the bigger primary. Just on simple aperture alone it's 8% bigger but due to the smaller central obtruction it's about 10% bigger in aperture area. A worthwhile difference. Build quality is similar to the Skymax. IE: not high end but very good. Do like the clip on front cover which is similar to a camera lens cover instead of just a push on type. Finder bracket has an 11mm mounting rail on the top so many red dot finders will just fit on. However I wanted a regular Synta type mounting so used an Orion SCT shoe. Also replaced the standard visual back wth a TS one with compression ring. Just don't like those visual backs with a single screw that bites into the diagonal. Diagonal is a Skywatcher delectric. Just waiting for a dew shield to arrive and a 1.25" to T2 adaptor so I can fit a Baader helical microfocuser to the top of the dagonal. Sits nicely on my Manfroto 475 geared tripod and Manfroto 405 geared head. The head has beem modded by removing the centre geared secton to make it into an Alt-Az head. I have used a C8 on this combination which was pushing it's capacity to the very limit. Doesn't even notice the weight of the 127 Mak. The whole setup with OTA can easily be carried single handed outside. Proper grab'n'go. ? Had it's first light about 4:00am this morning. Was a bit misty so not a lot to see but Jupiter was visable just over the neighbours roof. The scope had been sitting in the conservatory so not to warm and was able to observe right away. Was impressed with how sharp and clear Jupiter was at 158x mag. The equal to what I had ever seen with my old Skymax 127 and the scope wsn't cooled fully plus Jupiter was low down. Did the obligitory star test and the Airy dsks both in and out focus were excelent and showed colimation was spot on. Left the scope out to cool for a while but when I went back out the mist was getting thicker so just brought the scope back inside. Oh well at least had a nice look at Jupiter earlier. So I'm pleased with the build quality and the optics seem to be slightly sharper than both the Skymax and Celestron 127 Maks I used to own. More testing needed but very happy with the scope so far. John
  27. 2 points
    After months of deliberations, agonising and numerous deliveries, my travel setup is finally complete! Yesterday I had the fun of unboxing everything and putting it all together. My setup is comprised of: SkyWatcher Equinox 80 2” Williams Optics Diagonal Altair Astro Mini AZ Mount Three Legged Thing Punks Billy Tripod Baader SkySurfer III Baader Hyperion Zoom 8-24mm Eyepiece Explore Scientific 68 24mm TS Optics Herschel Wedge Think Tank Airport Essentials backpack The clouds cooperated and allowed me to enjoy some white light solar with it yesterday afternoon. It’s been a bit of a journey to get here and I have a lot of people to thank for their advice or willingness to sell me kit I talked myself in and out of purchases more times than I can remember. First impressions from my brief solar session yesterday. The mount works well without the counterweight but it is definitely smoother with it. The tripod is nice and stable. I only noticed longer settle down times when the central column was fully extended. Having it half way with the legs extended further worked great. I was worried about the backpack being too small but it’s plenty big enough. I could squeeze more in if required. It’s comfortable to carry. Setup from backpack to observing took about 5 mins which is ideal for grab and go. Fully loaded the backpack weighs 10kg including the tripod on the side so it ticks the airline transportable box I’m looking forward to it’s first night time session but am very happy with how it’s come together. Thank you to all who helped me along the way. I really appreciate it
  28. 2 points
    On Monday night this week A friend and I set off for Hallin Fell in the lake District, just above Ullswater. My only slight concern was the light pollution from Penrith and some of the Hotels on the water's edge as the fashion these days seems to be to set up anti-aircraft lights in the grounds ! Penrith was worse than I thought ? Here's the result from 9x 20 seconds, Nikon Camera, Tamron 15-30 lens @ 19mm and f2.8, ISO 1600. Stacked as usual in Sequator. These were the last few frames from a timelapse I was shooting. There was some mist around. A little disheartened we set off down to St. Peter's church in Martindale which was much darker. The sky still suffered from Penrith but it wasn't too bad. I know I should have tried a bit of light painting but I'm not good enough at it ! Here's two frames processed together. Both Nikon D750 and Sigma 14mm lens. The sky was 25 seconds, ISO 3200 @ f2.5 ( It was supposed to be f2.8 ! ) and the foreground was 2 minutes. As it was a bit windy the trees turned into a nightmare to blend ? Finally off to Glencoyne bridge for the wide open lake view. A bit of light from the hotels at the other end but manageable. Nikon D750, 5 x 25 seconds on the Sigma 14mm @ f1.8, stacked in Sequator ISO 3200. Al in all a very nice night. Hard work me carrying two cameras and two tripods up Hallin Fell but we lived to tell the tale, Dave
  29. 2 points
    Here's some additional comments... This scope is short, light, simple, reliable, colour free, has lots of in/out focus travel, high contrast, relatively low cost, and it goes easy on eyepieces. The cons are small maximum field of view, cool down longer than a comparably sized refractor, slight focuser shift at high magnifications, you can't use it with a Herschel wedge, the effective focal length changes if you change the distance to the eyepiece and the move the primary to refocus, and dewing is more of a risk. I've used this on all targets from solar to dso's. It gives the cleanest images of all my scopes except when I stop down the VX14 which is also very clean. I have found double stars and open star clusters suit it the best. I have modified it with a dual speed focuser, Telrad and Raci finder, dovetail weight, dew shield, and sometimes use a filter wheel. This scope and my ST120 are my most used scopes, usually this one is used if it's primarily brighter and smaller targets, and the ST120 if it's dimmer or larger targets. I went for this instead of the sky watcher because this scope is slower just like nature intended maksutovs to be(!). It's also better looking (call me shallow) but that's just a benefit of it, not a reason to buy it. I was supposed to sell this ages ago but it's still with me and seeing action.
  30. 2 points
    This was a really beautiful and rare sunset with the Sun and sky turning red. 70ED + Canon Eos 1100D //Johan L
  31. 2 points
    Hi, here is last nights shot at M101. This is a luminance run only and was to test to see if the central Halo was still there, and it is, grrrr. I have a sneaky suspicion it is coming from the edge of the secondary mirror. I have pretty much painted everything else matt black, so far. Anyway, Here is the Luminance run. Subs: 10x 300sec, 5x 420sec Processed in Pixinsight. BIAS, DARKS and FLATS applied. Cheers Paul
  32. 2 points
    I just had a marvelous early morning view of the new active region. You can see a fairly high plasma bridge near the sunspot. If weather permits in London, may become an interesting weekend...
  33. 2 points
    Stunning activity with lots of changes, bit of cloud dodging, but superb action. Nick.
  34. 2 points
    A few weeks ago I posted details of a Carton Japan 10.5mm eyepiece, which I like very much based on one good session so far. Well, I found another one, a 28mm, which I didn't even realise existed! It arrived today and is shown below next to the 10.5mm. Interestingly, the eye lenses look identical size on both eyepieces. The 28mm has, I believe, a 56 degree fov compared to the c 66 deg of the 10.5mm. They look very similar buildwise, and clearly came from the same factory. The photos show both eyepieces wearing winged eye guards, which I like to observe with, and the original circular eyecups are shown to the side. I know there was also a 16.8mm, also branded as Orion Megavista, but as yet I haven't been able to find one of these. Finally, the seller, from whom I bought both of the above eyepieces, contacted me to ask if I would be interested in a Carton 7-21 zoom eyepiece! I said yes please, and I should receive it in the next week or two. Another product I have never heard of, so I will be very interested to see how this one performs. I will report on performance in the eyepiece forum once I have tested them properly?. Dave
  35. 2 points
    A 10 inch triplet with flourite glass and folded configuration. An unusual design It's for sale for 34,000 Euros if any one is interested - not my sale, needless to say
  36. 2 points
    I finally managed to do some EAA - my first session since September last year. It was really a test run to make sure the equipment and my brain were still operating correctly! I had cleaned the sensor and reducer earlier in the day using the superb Baader Wonderfluid, so was all set. I aligned the mount using the finder only (rather than using the camera) for speed and to my amazement the subsequent slews were spot on, so thankfully the finder was still well aligned with the camera. I selected some galaxies at random and was very pleased with the results. It was a very easy session - just 'point and go' - however there were some things I need to improve which I will outline in a separate post in the equipment section. All results with Starlight Live - I haven't managed to get Jocular working yet, but will have another go this week. M100 in Coma Berenices with NGC4132 nearby. A number of other galaxies are visible in the FOV ranging from mag 14 to 17. M104, the 'Sombrero', was hanging over a neighbour's garage roof, but came out ok. Interacting galaxies NGC4435 & 4438, or Arp120 or 'The Eyes'. NGC4435 has the long tidal tails from interacting with its neighbour: M90 with its small irrelgular satellite IC3583:
  37. 2 points
    Only my second solar session and my first Sun spot. Very chuffed!
  38. 2 points
    Best to grab it while you can, too windy here. Dave
  39. 2 points
    Two interacting galaxies NGC 3432 mag 11.6 and UGC 5983 mag 15 .5 imaged over two nights 27-02-19 / 28-04-19 Luminance of 19 x 600 un binned RGB of 5 x 300 each binned 2 x 2 Celestron 11 " scope at F 6.3 QHY9m camera this has been a bit difficult to process I have tried a few different versions this is it up until now. Bob
  40. 2 points
    Just in case of cloud, Pencelli has a pub within 5 mins walk!!!
  41. 2 points
    Brilliant....thank you,again you learn something new every day.
  42. 2 points
    This is one of the most common misconceptions in astro imaging, mono collects data faster than one shot color You will get a better image in three hours with the mono. In three hours you would do the following. Lum = 1.5 hours Red = 0.5 hour Green = 0.5 hour Blue = 0.5 hour Total = 3 hours So if you assume that each RGB pixel collects 1/3rd of the signal of the Luminance filter then you get the following. The formula for light gathered per channel is: (Filter transmission as a percentage of Lum) x (number of active pixels) x (integration time in hours) = relative signal strength. **Remember that One Shot Colour uses a filter matrix and so for red only one in 4 pixels are active for green two in four pixels are active and for blue one in 4 pixels are active. For mono all pixels are always active. First For One Shot Colour: Red = 1/3 x 1 x 3 = 1 Green = 1/3 x 2 x 3 = 2 Blue = 1/3 x 1 x 3 = 1 Total = 4 Now for Mono: Lum = 1 x 4 x 1.5 = 6 Red = 1/3 x 4 x 0.5 = 0.66 Green = 1/3 x 4 x 0.5 = 0.66 Blue = 1/3 x 4 x 0.5 =0.66 Total = 8 So using LRGB on mono you collect twice the number of photons as one shot colour in the same amount of time. So relatively your 3hours is now 6hours of equivalent data. Hence if you are short on time can you afford not to go mono? So long as you have a filter wheel you only need focus on Lum then just rotate for each filter. Adam
  43. 2 points
    Hi all, I've been wanting to post this on here for ages, but never had an opportunity to get a decent photo. (I hope I've posted it in the right section too). The Turner Contemporary in Margate have an exhibition on at the moment called "A Place That Exists Only In Moonlight" by Katie Patterson. I loved seeing Caroline's Herschel's own notebook of observations from 1782 to 1787. It was open at the page recording the first comet she discovered on the 1st of August 1786. I've attached a photo of her notebook, and her copy of Flamsteed's Atlas from 1729. The exhibition runs until 6th May.
  44. 2 points
    Theres an android app called Space Weather Live. I use it to see if there are any spots for some white light viewing. Not seen my first sun spot yet so may set up this morning if it clears up!
  45. 2 points
    Just checked Solar Monitor and it says there is indeed one new active region appearing. Image from Solar Monitor app..
  46. 2 points
    Reading your post again I now realise that your question was more about insulating the block and pier from vibration (presumably meaning you moving about around the pier). Since I have an obsy, my pier is unaffected since the obsy floor is not in contact with the block. I’ve therefore got no direct experience for piers on a patio etc, however I know folks who have just bolted a steel pier to a much smaller block of concrete in the ground without any insulation at all. This has worked perfectly and has not affected imaging. I’m therefore of the opinion that the risks of gently moving around the pier are somewhat exaggerated. That said, I wouldn’t advocate jumping up and down, or bashing the pier itself!
  47. 2 points
    For my mount I went out at night with a red light and lined up a marker on the mount with Polaris. That way I didn’t have to worry about compass errors or solar midday. This was more than accurate enough considering the large adjustment margins of the EQ6 I have. No point over-complicating things where there’s no need. Keep it simple.
  48. 2 points
    Thanks Errol! I'm nearly ready to return to Nebulosity scripting. I had it working for an earlier version so it shouldn't be too much effort. Just finishing off colour at present and I definitely want to have 1-shot scripted captures with the filter wheel in time for open cluster season. Martin
  49. 2 points
    We had a couple of hours clear sky last night so had a go at M13. The sky fogged over about 1am limiting the exposure time to 2.8 hours. This is 13x 2min each for RGB and 45 2 mins on luminence - 1600pro and Esprit 100. https://www.astrobin.com/403453/?nc=user
  50. 2 points
    I did the exact same thing and bought two more, never did sell any. On a serious note I like quality option 3.
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