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Showing content with the highest reputation on 09/08/19 in all areas

  1. Trip to the recycling with garden rubbish. Car drew up next to me , lady put lots of wood out of the boot and a scope. Including dovetail, diagonal and 20mm ep. Yikes ! I asked if she minded if I rescued it . I couldn't see out of the objective with debris and dirt which also encased the dew shield. Soon cleaned it all up , not a mark on the doublet. Nice to find two pencil marks which line up to get the best results ! Also noticed three marks on the dovetail for its three outings ! First light was roofs and chimneys out the back. Ace , 70mm f10, hardly noticeable ca and very sharp c
    22 points
  2. 2000 frame capture this evening - c11 - 2.5x barlow - asi120mmS - red filter - 1280x960 - mono 8 avi - best 200 frames stacked in as3. Clear skies.
    8 points
  3. This is a 20 hour LRGBHa exposure of The Fireworks Galaxy that I captured part from the end of July, and last two nights. I was able to pull out some of the dim dust around the Ghost Brush Cluster and some small galaxies. Some of the galaxies in the image: PGC 166192 - MAG 15.15, PGC 64824 - MAG 17.00. Exposures: L: 60x300s R, G, B: 40x300s each Ha: 50x360s Total~20 Hours ZWO 1600mm FSQ106 ED Questions / comments / processing advice much appreciated! Thanks for looking
    8 points
  4. Got back in the saddle with a high familiar target. Loads of issues from non-use, and an extremely lucky escape when a heavy shower of rain bowled through when i had fallen asleep and soaked everything (happily I got away with just losing a usb hub). This is a cropped stack from 48 x 7 minutes Ha (1x1) and 70 x 7 minutes O111 (1x1) plus 20 x 7 minutes O111 (2x2) as the 1x1 O111 was weak; 7 minutes is as long as I can avoid guiding (but that's another issue) and arguably i have pushed it too far anyway. I have some rgb but it is terrible. Cropped to remove edges from different evenings etc
    8 points
  5. Was out, once more unprepared, with the 13.1" Coulter Odyssey this night from 02.15 - 03.45 CEST. Average conditions with NELM 5.6 mag. After a warming up with the NAN (washed out without filter) and the globular M 2 (well resolved at 150x mag), I spotted in the PSA two adjacent galaxies near the S border of Pegasus, NGC 7619 and 7626. The SkySafari info showed them as the brightest members of the Pegasus 1 galaxy group, at a distance of 250 million light years. Starting from the Pisces "circlet", I found the region after 10 min of star hopping. Both galaxies were quite prominent (11.1mag), an
    6 points
  6. We were treated to an excellent storm on the last night of our trip to northern Italy, just outside Milan. The view was nice from the 5th floor balcony and the rain never reached us. I got a few shots with my D800E and a Nikon 180mm F2.8 lens 5-10s exposures at F5.6 ISO400. Then a few wide fields with my Tokina 28-70mm F2.8 lens, 20s exposures, made into a composite image. I made a couple of timelapses too. I hope you enjoy them, as much as I enjoyed the whole experience. CS Adam
    6 points
  7. Not a spectacular image - this little camera has a webcam sized chip, the same as in the ASI120MC, but the mono version. This is the best of 125 16-second frames stacked in DSS without flats darks or bias. The little companion galaxy is visible but my skies hide the outer envelope.
    6 points
  8. A lovely crater, lots going on like person its named after. Astronomer - mathematician al-Batanni 858-929 - spent life observing planets, cataloging stars, influential to works of Copernicus, Brahe, Galileo & Kepler. c11 - 2.5x - barlow - asi120mmS - 200 stack avi mono 8.
    6 points
  9. No doubt we have all looked at Ptolemaeus, Alphonsus and Arzachel many times but what intrigued me was to the north of Ptolemaeus lying between Herschel and Glyden is a long valley running slightly west of north. The more I looked at the area the more intrigued I became and so began the sketch. As usual I got carried away and kept sketching all sorts of detail, all over the area. So far I have been unable to find out any information about this valley. The terminator was fascinating – various shades of black??? Key features laid out at the eyepiece and then the sketch completed later. I ha
    5 points
  10. Luke Talley was one of the engineers at IBM working on the Saturn V flight computers (LVDC). Destin spent some time with him and the gear at the museum in Huntsville. So much of interest here. The video is 45 minutes long but it's worth every minute. Fascinating stuff and this guy is an absolute treasure.
    5 points
  11. Both ISS transits did have a few clouds and approx 90mins later with more clouds which you tube will not load for some reason. And stacks from a cloud free spell Click for full res
    5 points
  12. Set the alarm clock for 3:30am and slept in the front room so as to allow my wife an unbroken nights sleep. Planned to have an hour looking at the Perseid Meteor shower as I missed it due to cloud last time around. I have recently bought a cable release for my Nikon D3100 so set it up on a tripod in the top field, pushed the ISO to 3200, aperture to f3.5 and exposure to 30 seconds. Had some awful results due to focus problems, these auto focus lenses have so little movement from close to infinity it's like having the whole volume of your HiFi between zero and one. Saw at least thirty stre
    5 points
  13. A raw, uncalibrated light frame, no calibration, no cooling, just a stretched 120 second sub. Quite pleased for a very first effort. G2-8300 Moravian camera with 3nm HA Astrodon filter with Samyang 135mm at F2, unguided at this stage. All on a NEQ6 mount. I have lots to do on this rig to get it properly set up. Least of all getting EQmod to work with SGP for which I will fire up a new thread.
    4 points
  14. UPDATE: follow you will see the new version with rgb stars and other changes!! all info at Astrobin https://www.astrobin.com/420032 and Flickr https://flic.kr/p/2gTvVf1 First light of my new mount Mesu 200 mk2 !! Really happy when I compare with the same picture last year, under different skies and diferent mount.... I hope you like it, all comments will welcome
    4 points
  15. Hi all, only just got around to process and upload my partial lunar eclipse images. Taken with 00UK 12inch F4 Newtonian and Canon 1000dm camera and APT. Processed in CS2. I've produced two mosaics, one colour as the moon rose through the atmosphere and the other black and white taking the colour away.
    4 points
  16. Recently I was given a 4 inch skywatcher Newt for which I made a table mount. I thought I would see what you could do imagining wise using this scope and a mono ASI220. 200 frames at full resolution, stacked in Autostakert, processed in Registax6 and given a final polish in Windows Photo. Conditions far from ideal with thin high cloud. I guess the previous owner will ask for it back...…..
    4 points
  17. You just need to get yourself a more expensive telescope - then the A11 EP cost will seem like an acceptable fraction of the cost
    4 points
  18. Nah, that's just what I use for re-booting recalcitrant computers .
    4 points
  19. First light SH2-86 Cloud Sculpting Star Cluster (NGC6820-3) in HST all info at Astrobin https://www.astrobin.com/420032 and Flickr https://flic.kr/p/2gTvVf1
    4 points
  20. I'm going to make some bold statements below Although Edge is sharper on the axis then regular C8 - for imaging it is not crucial thing. It does help, and it is better to have perfect optics, but I stress again - it is not crucial thing. It is much more important for visual. Why is that? Well any sort of symmetric aberration which happens on axis (I don't mean coma or astigmatism that can be due to poor collimation or design features off axis) will alter airy patter in predictable way. It will alter it by lowering strehl ratio. Same thing happens with for example central obstruction.
    4 points
  21. And so it came to pass that Rupert came from Astrograph even unto that wild country called Bride Valley bringing with him great treasure. OK, leaving out the fake biblical language, it is, as @Datalord intimated, a beast, that counterweight shaft is 60 mm dia. The long box on top is a 600 mm long shaft to allow for the mass of the ODK12 I have incoming. Good job it came in multiple boxes else we couldn't have got it into my garage. Poor Rupert had a nightmare of a journey down here, not arriving till about 3.30. After running through the differences between this an
    3 points
  22. https://www.skyandtelescope.com/astronomy-blogs/explore-night-bob-king/texas-amateur-detects-possible-impact-on-jupiter/
    3 points
  23. This is 4 minutes of 50ms frames, taking the 45% best. 1.5 drizzle applied and lightly sharpened in Gimp. I also shot a sequence of 20ms frames but my USB speed was maxed out at 50ms already, so I gained nothing from shorter frames except noise. Using my Skymax 102 on AZ-GTi as usual. I have no success using Sharpcap focus assist; the focus quality graph just seems to degenerate into random green and red bars for me. Instead I focussed by watching the sickle negative space between the rings and planet, and optimized the cusps. I am really enjoying the combination of the AZ-GTi and
    3 points
  24. Hmmm, I'm not convinced that the £120 investment in an ADC would deliver significatly improved views of Jupiter and Saturn in this case. I've had some very nice views of both planets lately from the UK and while their low altitude has created some challenges with seeing stability from time to time, I've not noticed the tell tale signs of atmospheric dispersion specifically affecting the views. I suspect that the original poster might get better results by checking the collimation of the scope, ensuring that it's cooled and by observing these targets for a good period of time to allow the
    3 points
  25. Looks really nice @DaveS. Should I be worried about some of the adjustments you have planned?.........
    3 points
  26. Flying bat. And so it begins , the madness called the squid is in there. Starting this years data collection. 6 hours so far in 1800s chunks with the TS71 imaging star. Clicky time for full res
    3 points
  27. Just to show how easy and nice a little imaging can be and how much can be seen with very little effort. Simple single twilight picture with a handheld iphone 7 at the eyepiece The image is a bit cropped. This can be done with virtually any set-up.
    3 points
  28. Gutted to hear of your problem. As I don't know precisely what equipment was affected, and to what degree, I can only offer general advice. First remove all electrical power. Yes the mains is obvious. But you also need to remove any batteries. Even small (clock backup etc) batteries can start providing electrolytic corrosion. Anything electrical or electronic - dismantle it. Thoroughly wash out using a mixture of isopropanol and water. This will ensure you are left with a clean liquid that evaporates easily. Then leave covers off and let gentle and the dehumidifier do t
    3 points
  29. I'm so sorry to hear that, it must be so frustrating... I can only recommend you to buy rice. It is amazing at absorbing humidity. Just put your electronic equipment inside a bag or a box full of rice, and let it dry there for a day or two. It might not save everything, but it's worth a try... It worked once with my DSLR after taking it outside while it was snowing. It wasn't responding anymore, but 1 day in rice saved it and now it still works today
    3 points
  30. Sorry to hear about this incident - every remote operator's nightmare! I haven't had this exact issue but I have had waterlogged electrical gear and have always managed to resolve the issue by bringing it home, draining out as much as possible and then placing it in a warm airing cupboard for a couple of days - unless you are extremely unlikely, modern electronics are very resilient, just be patient with the drying out procedure. Oh, and get that technical glitch resolved once and for all, even if it means designing your own control system for the shutter - which is what I had to do
    3 points
  31. Hello Andy and welcome to SGL. I have the Heritage 130P and I use it for outreach work plus at home for quick grab and go. The mag of 65X is not the limit - in fact I often use mag up to 150X. Had good views the other other night of Jupiter + GRS and Saturn + Cassini division. At outreach events I often show DSOs (Clusters, Globs and Galaxies) As Stu stated above the weakest part is the focuser but that can be improved with PTFE tape. I have made many modifications to the scope including, a few weeks ago, an additional dovetail to use it on a particular alt/az mount. T
    3 points
  32. I think it might be related to "blue lettering"
    3 points
  33. For those who have ever wondered what is going on inside the Skywatcher Star Adventurer, wonder no more. Here is the mount, stripped down as far as I am willing to go. I have an issue with the SNAP port on mine in that it is very sporadic in its working. Sometimes it will be fine and then others it will fire the camera but not hold the shutter open as it should. I have tried replacing the 2.5mm socket with another, but to no avail. Have contacted @FLO to see about getting a whole new port, harness and connector and am waiting to hear back on cost for this. To get to the boa
    2 points
  34. I've recently ordered the Skywatcher Evostar 72ED as a travelscope and it arrives on monday. I just received my mount head(The TS AZT6 from teleskop-express) which I've made a video on with my first impressions. I will post updates, review, first light etc in this thread when I get my scope(and some clear skies, sorry everyone) Hopefully this thread will help others who are considering to buy the evostar 72ED but also entertain everyone else reading from the sideline:) Here are my first impressions on the mount head I will be mounting the telescope on: Clear skies!
    2 points
  35. Hello all, obviously I am new here, but not to Astronomy in general - I've owned an Apertura AD10 since the Opticsmart days (With tweakers package). I am fairly active on other forums - with this same username, so if I know you from there, Hi! If not, Hi! I think that's it for now.
    2 points
  36. Back in the late 80's or early 90's I took my daughters and a couple friends to the Cape. I'm still digging for a couple I remember. If I remember right, I've got them standing.in front of the business end of the Saturn V.
    2 points
  37. When observing while seated, the muscles in your eyes are relaxed and no pressure from bending your neck. This leads to better views.
    2 points
  38. I know - M31 again - but this is just 3x60s of R, G and B plus 3x120s of Ha - so 15 minute in total - using the 135mm Samyang with the ASI1600MM-Pro. I had been imaging IC1396 and stopped when it hit the meridian. I noticed M31 was on the way back to Park so thought I'd grab some of that as well but the clouds rolled right on in and that was that! I know it won't win any prizes but it just goes to show what this remarkable lens can do when used on f2 with a CMOS camera. I am hoping this image of M31 is finally showing that I've managed to largely solve my odd shaped stars probl
    2 points
  39. Nice video Victor. I have used this mount for a grab and set up with the ED 72 and it works very well, but I did have to put a longer dovetail on to get a better balance.
    2 points
  40. Yup: that's three times the pleasure (if not 3 times the price )
    2 points
  41. Actually no, that is what you in principle need: - calculus - algebra (meaning algebraic structures like vector spaces and groups/rings/ ....) - Fourier analysis - complex numbers Important thing is ability to think in abstract terms - which should be covered by second above - algebraic structures. Most of QM formalism is expressed in these abstract structures. For example, when we speak about vector spaces - most people imagine plain old vectors - little arrows that have origin, direction and magnitude. But vector space does not mean those vectors - it can mean space
    2 points
  42. no experience with astro stuff getting wet but being a roofer and working on boats ive had plenty of electrical gear soaked and survive. if its running and plugged in it can cause issues. ive dropped drills/grinders/skill saws in the sea before. none actually plugged in/running though. my goto is to rinse well with deionised water, luckily i keep a marine aquarium so have gallons of RO/DI water on hand but it can be easily bought at halford. all have survived after a rinse and extended drying time.
    2 points
  43. As Vlaiv says, it's Admin only - at least for the immediate future....
    2 points
  44. My imagination sees this as the Dale burning in the cold, ice fire of Noctilucent Clouds. The layering of the NLCs combining with ground level clouds. Wailing music invokes a funereal mood... A mix of stills and time lapse. Canon 7D MkII & 6D MkII Sigma 24mm Canon 200mm. Lightroom and VSDC. Music - 'Ring of Fire' by Lee Rosevere. Imaged 27/28 June.
    2 points
  45. Hi Andy, The Heritage 130P is a very capable little scope, optically very good and will be a significant improvement over your 40mm refractor. I'm not sure where a x65 limit comes from, perhaps the supplied eyepieces, but with some optional additions the scope is more than capable of x130 or more. I bought one from Astroboot just as the tube for about £50 and use it on a tripod with a mount which puts it at a better height. I believe there was one on there just recently but it may have gone. https://www.astroboot.co.uk/AstroBoot The weak point of the scope is the plast
    2 points
  46. Just binged watched the first three episodes on i player, brilliant stuff from Jim AK. I also noticed an horizon program on the i player "how to build a time machine" so watched that too..... Alan
    2 points
  47. 2 points
  48. The saddle is optional and highly recommended in my opinion because it fits perfectly with the new internal cable management. And regarding the wedge, I ordered the wedge for my latitude (it's possible to use it with the Barlebech tripod as example) and an adapter to my pier. This is what I received (top right: pier adapter) This is my pier with the Mach1 and the pier with the adapter and the wedge
    2 points
  49. Now a short video with a slew. It's a temporary set up, waiting the dual rig with an additional RC10 please, look how clean is the cable management
    2 points
  50. I took this of Rho back in May with the Samyang from South Wales, bad tracking meant I lost a lot of data so it’s only 16 minutes worth, I’m hoping to top it up!
    2 points
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