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Showing content with the highest reputation on 15/07/20 in all areas

  1. 7 points
    Just had the MOST amazing observing session of my life!!! I am staying / living in the Blue Ridge Mountains at the moment and am blessed with very dark skies. About an hour after sunset, appx 9.50pm, I saw comet NeoWise motoring - could literally see it moving as I watched - up in to the NW twilight and then watched (10x50 bins & Cassie) it disappear over the top of the mountain.............. completely, totally, surreal. I saw comet Hale Bopp in 1997 in London and whilst that was spectacular, what I saw tonight was just absolutely surreal. Most comets 'just' appear to hang in the sky, whereas I could actually see Neowise moving. From coming into view to disappearing over the NW horizon must have taken only 20 minutes or so. There were a lot of helicopters up over the mountain watching it. Then, at about 10pm heading north was what I believe was the ISS. I've yet to check for sure but it was nearly as bright as Venus and moving slower than a satellite. Then I saw numerous DSOs, globualr clusters and nebulas. Then turning to the SE I saw Jupiter and Saturn, Unlike the other evening when the image was very blurred (atmospheric turbulence?) tonight's images were clear and beautiful. Could clearly see Jupier's cloud belts and the 4 biggest moons. (108x 9mm + 1.5 Barlow) Saturn was the best I've ever seen him. Crystral clear ring definition and I am sure I saw one of his moon at about 5 O'clock to his position - maybe Titan? I'm not an experienced astronomer (telescope wise) but I have followed this subject all my life. I don't know much but I do know that not many people will ever get to see what I did tonight all in the course of 2 hours. I am very blessed and thrilled beyond belief!!!! Everything tonight viewed through my trusty 5'" Newtonian, Cassie
  2. 6 points
    Last weekend was looking good to being my first opportunity to observe in nearly a month! Thursday and Friday nights were forecast clear, and luckily I’d got Friday off work too, so a late Thursday wouldn’t be too painful. For Thursday the Moon wasn’t due to rise until around 1am, and I’d made a list including several nebulous objects hopefully viewable before the rise of the 77% Moon. I also had a raft of Globulars. And Comet Neowise of course. And the Planets. I set up with my Southerly view, in the clearing around the back of the house to get the planets, and my list was mostly orientated accordingly. I was also planning to use my Nexus DSC instead of the SynScan to directly control my AZ-EQ6 mount. Night 1: Thursday 9th July. Controller Frustration, Bad Seeing, Dew and Cloud: Lessons Learned. In the event, the night, although disappointing from an observing respect, proved a useful set of rehearsals for the following much better night. The night was clear and dark enough, good enough for a decent photo of my scope with the MW in the background (forgive the Samsung-24-1.4-inherent coma on Jupiter!): It'd been a month or so since I’d had my first go with the Nexus DSC/AZ-EQ6 combination, and I’d basically forgotten how to use it, especially Alignment. I wasted more than an hour trying to crack Alignment and eventually gave up, reverting to the SynScan instead. I had been planning to re-read the manual during the day, but hadn’t got around to it. More fool me. Once aligned using the SynScan instead, I of course first pointed to Jupiter. Oh dear. The seeing that low down was TERRIBLE! Barely-discernible main bands, and nothing else except atmospheric CA. But it was an impressively huge object at 150x with my Delos 10mm. I did get to see a transit/occultation of one of the Moons however, just a tiny white dot “off the edge” gradually merging and disappearing. There was also at least one maybe two background stars masquerading as a extra Moons, at very similar brightness and nearly in line with the rest. Saturn was similarly wobbly and detail-free, but also much bigger than I'd seen before. I am so looking forward to 2-3 years’ time when they're high up. I’ve never observed them properly yet. My next intended was Antares, to see if my 12” of resolution could see any sign of its double. Not a chance. Antares was a reddish wavy huge moving splodge. So spread out by seeing that it was even greater in extent than Mars' disc was later in the evening. After that poor start, I moved to my list of PNs. Universally disappointing, I think they were all dew-affected. I found NGC 6781 “Ghost of Moon” but it was barely discernible, just a faint patch. I looked for NGC 6309 “Rectangle” but failed to find or notice it. In hindsight I think it was because it’s extremely small and I may well have mistaken it for a star, given the seeing. NGC 6894, one of a few so-called “Diamond Rings” similarly eluded me. I skipped the Veil, leaving that until I could bring my Oiii filter to bear. I’ve actually not yet seen the Veil in any form. The Eagle Nebula was also I think too big and spread out for my 0.48 degrees of view, but I did find M27 Dumbell easily enough. However by now everything, including optical surfaces, were getting seriously covered in dew and I had no mitigation. And clouds were heading across from the North: they’d been there all along and had made sure there was no chance of seeing Comet Neowise that night. And the Moon was about to rise. I finished off with a quick look at Mars and that was it. That hour lost to Alignment problems proved expensive in Units of Viewing Time. But a useful preparation for the following night, as it turned out. Night 2: Friday 10th July 2020. Nexus Conquered. Dew Conquered. No Clouds. My God the Comet! I learned the lessons of the previous night, and during the day I re-read the Nexus DSC manual. I found out where I’d been going wrong, and this night I managed to master Alignment. So much so that when I had a power-off blip mid-observing later on, causing tracking and position to be lost, it took me all of 2 minutes to reset the scope’s position and do a 2-star align and get back on with it. I was also enormously helped by the fact I was finally able to use my year-old Telrad for the very first time, thanks to the 4” Telrad riser I bought from @johninderby (thanks). Beforehand I’d found the Telrad impossible to use, needing to get my cheek right down on to the tube, uncomfortable. Another lesson I took on board was ALWAYS HAVE THE HAIRDRYER ON HAND. I used it several times during the evening. I enjoy how it briefly totally destroys the seeing with a tube full of hot air, then rapidly clears up. I used the same list as prior evening, hoping to get better results, and so they mostly were. On top of that, this night was truly pristine, not a single cloud anywhere from horizon to horizon, except for my first-ever-seen noctilucent clouds to the North norizon, which only made Neowise more beautiful. I had a quick look at the planets to start with again, better than last night, but still spoiled by atmosphere. I didn’t bother with Antares. My first nebulous target was again the Rectangle Nebula, and again I didn’t find it. Has anybody here seen it? Is 150x too low a magnification for something like that? Darkness level was around 21.10 so should have been no trouble? I skipped straight to M17, found it straight away and gasped. I was looking at a very distinct swan shape, clear as day night anything. Sure enough, M17 is known as the Swan Nebula. Remarkable. Next was M20, Trifid Nebula ,and I was confused that once again I couldn’t see or find anything except what was obviously an open cluster. On reflection, it’s obviously too big and nebulous for the 150x magnification I was using. I moved a little to M8, Lagoon Nebula, and was greeted with much nebulosity and a highly distinct dark channel. Much like a huge burger. But once again, I think my mag was too high. I seemed reluctant to use anything other than my Delos 10mm though. Finally, I rattled through a series of Globs, there are so many in that region. I looked at Messiers 10, 12, 14, 22 and 4. I find Globs mesmerising and entrancing. The Comet. In the midst of all that, though, when it had got as close to as dark as it was likely to get - I measured 21.10 around 0015 - I turned my attention to Comet Neowise. I’d been eyeing it naked-eye of course throughout the night, and it just got brighter and brighter and the tail longer and longer. I put in my Panoptic 35mm to the 12” (43x) and the view was beautiful. I took a few rubbish shots hand-holding my phone to the eyepiece. But whether naked eye, binoculars or through the scope, it was truly memorable. In my excitement, and wanting to share the almost transcendental experience, I instinctively called my near neighbour across the field intending to say “you need to see this”. The call wasn’t answered. I tried again, again to no answer. Only then did it occur to me to check what time it was: it felt like early eveing to me. No, it was after midnight, no bloody wonder there was no answer! I cringed, hoping they’d had their phones on silent. In fact what happened at the other end was, apparently, this: “Who the bloody hell is that at this time of night?” “Er …. oh, it’s Magnus.” “You know what, I bet it’s the comet.” So they got out of bed to have a look, to see this: On seeing that (and I carefully processed the image to show it exactly as it appeared naked eye) my neighbours immediately rousted out their two teenage daughters as well. I was completely ignorant of all this, still cringing at my faux-pas, so I was hugely gratified and relieved to get a text 10 minutes later saying “That is totally cool!! We’ve all had a look and are expecting fantastic pictures!”. Awash with relief, it was that that prompted me to get my proper camera out and take the above image. Jason, the man-about-the-house, said afterwards “D’you know I think that was the most beautiful thing I’ve ever seen. Yes there was a moment of initial annoyance at the phone, but we’re just so grateful you woke us up”. Because I’d set up my rig behind the house, taking 20-30 minutes and perhaps 10 trips to get all my stuff back inside, I had to walk past and look at that view in passing many separate times, and it’s now etched into my memory. All in all an observing night I won’t ever forget. The Nexus DSC is a lovely little unit, and even not yet being remotely familiar with it I vastly prefer it to the SynScan, for many reasons. But I think I’m going to have to start a new thread solely about that. For example, after first use I had some questions about how it worked specifically on the SW AZ-EQ mounts, so I emailed Astro Devices. One morning later Serge from Astro Devices called me and sorted me out. But I think it needs a separate manual devoted to its use on driven mounts only: I might unofficially write it. Cheers, Magnus
  3. 5 points
    As in "She slew him when she found out how much his eyepieces had cost"
  4. 4 points
    Hey guys, If you are like me and like to enjoy a couple of beer while gazing at the sky, you ,no doubts, have know the issue of kicking an open bottle in the dark (which for the less lucky of us might end up in the EP case). THIS IS NOW A THING FROM THE PAST! I present to you the lastest dob mod, derived from technologies inspired by NASA itself, ... the retractable cup holder! Clear skies, Raphael PS: you could even use it for tea... you lot sure seem to like it
  5. 3 points
    Jupiter’s Galilean Satellite #1 Io will partially occult its own shadow during the night of 2020 JUL 15-16. This can only occur during the nights surrounding Jupiter’s opposition from the Sun, which this year was during the night of 2020 JUL 13-14. Well, it can also occur around the time of Jupiter’s conjunction behind the Sun, but as a practical matter that is not observable. Below is my preview graphic. Photos and descriptions of the actual event would be welcome additions to this thread.
  6. 3 points
    I managed to resist posting a music vid........just.
  7. 2 points
    First attempt and first clear morning after 2 weeks of bad astrophotography weather. Taken about 2 hrs before sunrise on 07/13/2020 The image still has some startrails from the comet stacking mode in DSS. I've used the comet stacking mode and normal stacking mode and blended both together in Photoshop to get the comet with its starfield rather than startrails. Difficult process to do this manually. If someone knows a method/software that does comet stacking with its starfield, please let me know. DSS failed me on several occasions using comet+star stacking method. Ken Equipment and image detail: Nikon d610 TS72 APO + TS72flat settings: 432mm, f6, iso400, 40min. Different exposures ranging from 30 sec to 5 sec. Tracking: Skywatcher Star Adventurer software: Stacking: Deepskystacker 4.2.2 Processing: Adobe Photoshop
  8. 2 points
  9. 2 points
    Hi everyone, The attached image is the result of a short AVI file, captured in ASI Capture, stacked in AS!S, (because Registax6 would not load the file), wavelets then adjusted in Registax and the resulting image then tweaked and cropped in Paintshop Pro. As with my recent Mars attempt I'm eager to try again with a barlow. Scope is a Skywatcher 250PDS and camera is a ZWO ASI 120MC.
  10. 2 points
    Just hope any slew speed glitches don't qualify your mount for Centrifuge duty at Nasa. Ron.
  11. 2 points
    It also means to 'turn about an axis'
  12. 1 point
    Sold my ASI294MC Pro and now for sale my ASI183MM Pro, both to be replaced by incoming ASI533MC Pro. Used twice for solar imaging (now have the SW SolarQuest mount and my ASI178MM is sufficient) and twice for EAA. Camera is in brand new condition and comes with all the accessories and box as it comes from ZWO. Please note that since it has the same accessories as the 533, when I receive the 533 I will remove all accessories and put them in the 183 box, so that you receive BNIB accessories with the camera. I am fine using the stuff from the 183 originally received. Priced new this is £979. Since this will come with brand new accessories and has only been used 4 times, I will price mine at £700, including shipping with tracking and PayPal fees. It's a lovely sensor really, but I prefer to only have one camera suited for my EAA setup and concentrate on that. Photo attached shows the camera as it is on my rig. Works great as seen with nary a problem Cheers, Nicos
  13. 1 point
    Lovely report and pic, the comet sounds amazing, yet to see it myself. For the tiny planetary nebulae, you could try ‘blinking’ an OIII filter across the front of the eyepiece, the stars are dimmed but the PN stays the same. I’ve only just got my OIII filter so not tried it myself yet, but understand it works well.
  14. 1 point
    Well I didn't slink quietly away, it turned out to be quite successful, ( the mark two version anyhow ) My generic unbranded cheapo manual filter wheel was ideal for the conversion because it had just enough area around the front T mount opening to accomodate the larger EOS lens mount ring donated from an extension tube. I cut the hole very carefully and incorporated the original spring loaded latch. In order to get it thin enough to give me enough backfocus with my Altair 1600M (17.5mm), leaving just 26.5mm max from the EOS's 44mm BF), I had to mill the centre framework thinner by 3mm (it was just plastic so that was fairly easy). My original mark one version rigidly mounted the filter wheel on a short vixen bar, which then supported the camera and lens, but that was not practical, as it was awkward to rotate it to align the camera's chip square to the subject. The mark two version was to use a couple of spare 100mm scope rings lined with cork to hold the camera instead, leaving it free to rotate. I now have the ability to use any of my photo lenses and still have a backfocus safety margin of a couple of mm. The beauty of using an EOS lens flange is the multitude of cheap adapters available for it (Nikon, Pentax, Olympus etc.) The final photo shows my Olympus Zuiko 135mm lens mounted on the Altair. Thanks for the original thread Guy, it spurred me on to do the same.....
  15. 1 point
    What a frustrating night. I was just about to go to bed (Jul 12, 01:15) when i decided to have a quick look outside (it was supposed to be completely clouded over) and lo-and-behold i could see stars! So i decided to ignore the fact i had already had a few beers, and try and set up the scope in double-quick time, in case i could grab a few quick snaps of Neowise between the clouds. There was only 80 mins of Nautical Darkness left, and i had to set up from scratch, so i decided early on that i would only aim for 30s subs and not even bother guiding or even connecting the dew bands. As it turned out, i couldn't even see Polaris through the polar scope, so had to rely on Sharpcap for the full PA routine (normally i would do a rough PA using EQMod). This took a good 15-20 mins, instead of the usual 5 mins, but i was just happy to get a good PA done! I wasn't prepared at all, so i had to get the RA and Dec co-ordinates from Heavens-Above, and quickly set up a sequence in SGP. Found the comet with no bother and got framed and focused. Then just started shooting 30s subs and hoped for the best. By this time, it was 02:45 and Nautical Darkness had passed. I was just hoping for a 5 min window with no clouds (i took over 70 subs) but alas, no such luck. Despite the skies overhead being totally clear, the clouds to the North never cleared, and every single sub was affected by thick cloud Rather than just bin them all, i decided to try and at least process one of them. I was able to find 3 potential candidates where at least a fair bit of the comet was visible (i might still try the other 2) and this was the best i could manage. Happy enough that i at least came out with some sort of image, but boy was it frustrating not to have even a 5 min window of clear sky! The forecast here is pretty terrible now for the next 6 days, so fingers crossed this isn't the only opportunity i get at this. Nikon D5300; HEQ5-Pro 1 x 30s, ISO 200 Calibrated in APP, processed in PS. Thanks for looking and CS!
  16. 1 point
    Thanks Quroboros. I think it's fixed now.
  17. 1 point
    As I'm sure everyone is aware, Comet NEOWISE has passed into the evening sky now and survived its trip near the Sun. I haven't made it out to a dark sky location with the scope yet because our daytime temps have been hovering around 115°(46°c) and even at sunset it's still around 105°(40.5°c) so setting up all the gear will be brutal. I did decide to see if I could capture it with a simple DSLR/tripod rig from my home balcony and even though I couldn't make it out naked eye, it did show up on the camera. I wish now I had let the camera shoot longer, at least another 30 minutes, but I really didn't think I had captured anything until I loaded the files on the computer. You might also notice a fairly smooth transition from day to night, well I was using an old device that I bought around 2010 called the Little Bramper. It's a bulb ramping device that steadily adjust your shutter speeds and compensates for ISO changes. The only limitation I see so far is that its shortest exposure is 34ms. That means that even at ISO50, f2.8 the sun would completely blow out the images. I had to wait until the sun set behind the mountains to begin the day to night timelapse. This timelapse started at ISO50, 34ms and ended at ISO400, 1.5 seconds. Pretty smooth transitions! Let me know what you think.
  18. 1 point
    I remember now I promised to update this topic, I now have my backfocus set at 60.4mm and all star shapes all the way to the edges are now round. It's not 100% perfect on close inspection but the difference between this and the previous mosaic is chalk and cheese...and I love cheese.
  19. 1 point
    I resisted and resisted. I told myself I have enough scopes and don’t need this and then boom the order was accepted. As you can see I’ve gone and got me one of those C9.25 xlt thingamybobs from Celestron. It fits (very) snuggly into the observatory. Just need Mars to rise at a civil hour now
  20. 1 point
    When you get happy with the scope location, it will help to put some marks on the ground where the tripod stands to help get the same orientation when setting out. On my patio I used a drill to put some indents in, I had the same on my decking but it was more sensitive to movement on there. I found it helped a lot...
  21. 1 point
    A very brief break in the clouds, Polaris cloud covered so no chance of alignment, just pointed it roughly in the right direction and 'slewed' it around. My first pic of some stars .... I know, but it made me smile
  22. 1 point
  23. 1 point
    I have just seen the Hi Res image Brendan on Telescopius and it is absolutely amazing I could easily see abell 69 and the soap bubble. You have some cracking images under your belt Well Done.
  24. 1 point
    From what I know of Ben Nevis, you probably wouldn't want to be observing from its summit, either. You were higher than that when you were visiting the plains of northern Arizona!
  25. 1 point
    I just want to say, I am just starting out on observing the sky. Only have a 4 inch scope. Learnt the hard way that a 4mm eye piece isn't the best. I need to get a 6mm. But isn't it amazing when you see a star and focus in on it, then you see all these stars around it. You come away from the scope and cant see anything. The sky just goes on and on.
  26. 1 point
    I recently measured mine with the pinprick card test and got mine to around 6.3. So hard to measure when you are using homemade devices with only a ruler to measure and magnifying glass the distances though.
  27. 1 point
    Quite a challenge this one and one for larger scopes! Fairly easy to locate near the North America Nebula, and perfectly positioned at the moment well above the horizon. The separation is given as about 1 arcsec and the magnitudes 3.9 and 6.8, which I reckoned should be do-able with a 180 Mak. First try, Tuesday with good seeing (4/5), nearby Delta Cyg was easily split and showing the secondary as a diamond pinprick, while Tau Cyg showed no sign of a secondary. The next evening (Wed), I got the faintest hint of something in about the right place, and third try (last night seeing 4.5/5) there it was in moments of good seeing at x270 and x450. Clearly separated from the primary, but messed up a bit by the diffraction pattern causing to hop in and out of view, as the secondary lies close to the first diff ring. I can't sketch very well, but the Aberrator simulation below is a fairly accurate eyepiece view at x450. A good one to try if you are bored with looking for some detail on Mars! Chris
  28. 1 point
  29. 1 point
    200 frames total. (this one gave me a bit of trouble aligning!)
  30. 1 point
    this little active region put on quite a show and i captured till i ran out of drive space. 160 frames x 40ms delay. (220 frames in each stack) (8 seconds per video capture) (160 captures) Animated with https://gifmaker.org/ Cropped with avidub. Logo applied with avidub . Levels adjusted with avidub. Files converted with PIPP and registax 5.1 Three pass Processing done in ImPPG (.xml files attached) 127mm x 1200mm explore scientific first-light achromat with Meade 2x tele-negative barlow. Basler aca720-520um camera. Baader planetarium 36mm B-BCCD filter for energy rejection 1 angstrom calcium filter from Apollo Lasky @ http://calcium.solar https://explorescientificusa.com/products/fl-ar1271200maz01?_pos=8&_sid=9637d7ccc&_ss=r https://www.meade.com/meade-series-4000-126-2x-short-focus-barlow-lens-1-25.html https://www.baader-planetarium.com/en/baader-b-ccd-filter-(blue).html https://www.baslerweb.com/en/products/cameras/area-scan-cameras/ace/aca720-520um/ http://virtualdub.sourceforge.net/ https://greatattractor.github.io/imppg/ http://www.astronomie.be/registax/download.html https://sites.google.com/site/astropipp/downloads http://www.firecapture.de/ Thanks for watching! 1.xml 2.xml 3.xml
  31. 1 point
    I believe it's sometimes used in this sense in American English. James
  32. 1 point
    Hi Guys - after months of rain and cloud and at the point of despair, finally got two weeks of moonless nights and got some data . This is the first image I have been working on. NGC 4565, a popular target and a great galaxy I think with those prominent dust lanes and just tilted enough to appreciate that it is spiral galaxy, ? barred. The distance is a bit uncertain as far as I can see, between 30 and 50 million light years, so the size is also uncertain either between our galaxy and the Andromeda galaxy or even bigger if it is 50million light years distant. Anyway taken with a 12inch RCT QSI 683 and about 30x10minutes luminance and 4x10minutes for each of RGB. Processed mainly in Pixinsight with a bit of Photoshop.
  33. 1 point
    Quite. When I write C or C++ (for oacapture for example), I use a fairly aggressive set of compiler warning flags and have compilation fail on all warnings. It makes more work, but catches potential bugs that I didn't notice when I was writing the code. James
  34. 1 point
    I view this as a good thing James
  35. 1 point
    A few moon shots, my first in ages. They are the results of some very short AVI files, captured in ASI Capture and stacked in AS!S, (because registax6 would not load the files). Scope is a Skywatcher 250PDS and camera is a ZWO ASI 120MC.
  36. 1 point
    That works for me really well too, but I find I sometimes have to apply a tiny bit of Gaussian blur (0.7 or so) to the star layer to avoid the stars looking “painted in”. Hardest problem I had with Starnet was finding a computer in the house that it actually ran on. But for the price you pay for it...
  37. 1 point
    Thanks! I just got an 'official' reply from Ivo at APT and he confirms what you say - so 590mm it is then. I think I'll also try the FWHM focusing tool too, just for laughs.
  38. 1 point
    Imaged from Mellieha, Malta during the last week. I wasn't happy with the way the standard Hubble Palette turned out, so I swapped the mappings to: SII = Red Ha = Blue OIII = Green John
  39. 1 point
    Heya, I had a late start this morning, had no hopes to see the sky, but despite poor transparency and cloud cover, seeing supported taking a look at today's large southern prominence grouping in moderate resolution. Lovely big prominence complex, get your scopes out if you have a chance, it's lovely! 120mm F10 Refractor + 50mm Baader Red CCD-IR Block (Sub aperture D-ERF) + 1A HA Filter + 10mm BF + ASI290MM Very best,
  40. 1 point
    What else can I say! Taken with a Nikon 3200 DSLR 3sec exposure at 400ISO with standard 16-55 lens on a undriven tripod. 00:45BST
  41. 1 point
    Merriam Webster has "to turn something about a fixed point that is usually an axis". May be originally nautical as they give a ships spar as well as a telescope as examples. Regards Andrew
  42. 1 point
    Slew can also mean a large amount or number so perhaps moving the scope a large amount could be the reason slew is used.
  43. 1 point
    Hi Frankie, Welcome. I’ve only been here since April and like you kept stalking/reading things on here. I felt guilty in the end using it Without being a member so I finally joined. I only do the visual stuff and have to admit when I read some of the astrophotographers post’s I’m totally lost. Binoculars, cameras and telescopes as individual items I understand but not when they are used together Dale.
  44. 1 point
    Nice crispy view of the full disc here: Some crops from the full size file here: And for those who made it to the end of this post.... here is the full size file at Astrobin: https://www.astrobin.com/full/rgvus9/0/?nc=WestCoastCannuck&real=&mod= Clear skies!! Mike
  45. 1 point
    Comet NEOWISE - Canon 600d DSLR- EF 90-300mm at approx f=300 mm - 10 sec at ISO1600. 3:00am BST getting light - Dawn approaching.
  46. 1 point
    Gerry, To test the limit of an eyepiece, it would first have to be used on an appropriate target, such as stars in NGC206 in M31. Or whether thousands of stars can be resolve in, say, M14. Then, the focal length should yield a 1mm exit pupil or smaller, since high powers always yield the faintest stars. So people who test such things would need to specify scope size and f/ratio as well as exit pupil. And, for such a test to have value, it would have to be compared to another eyepiece of equal focal length. And, the observer would have to specify whether the limit observation was truly a limit observation (i.e. visible with averted vision only, and only 10% of the time).
  47. 1 point
    Privet is a useful plant (as is Buddleia) as many pollinator insects feed on the flowers and it then Privet has berries. You might want to consider any neighbours and the High Hedge Act (UK). The use of temporary light shielding can be effective against intrusive light sources.
  48. 1 point
    Buddleia very good. Smells fantastic, very attractive. Insects, especially butterflies love it and it grows extremely fast. And it doesn't mind a brutal prune from time to time as and when necessary.
  49. 1 point
    I had a go at processing your data. You need to take flats to get rid of the vignetting on the edge of the frame which makes processing easier. I had to crop quite a lot to overcome it. This is very good for a first try though! Do you live in a light-poIluted area? I might have a go at this galaxy myself if I get another clear night.
  50. 1 point
    just rotate the inner section (where the 3 finger holes are) to REVEAL the hidden screws i do not mean the outer rim - this holds the whole secondary assembly to the front corrector glass plate
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