Jump to content

sgl_imaging_challenge_2021_2.thumb.jpg.72789c04780d7659f5b63ea05534a956.jpg

Leaderboard

Popular Content

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

  1. I thought I'd have a play with the Skywatcher Star Adventurer mount last night. Scope was the Altair Astro 60 EDF and camera the Canon 1000D (modded). I found that 60 sec exposures were fine, 120 secs I discarded about half of them. Altogether this is a stack of 20x60 secs + 19x120 secs + 6 darks. Captured using APT and stacked with Astropixel Processor. Processed in Photoshop.
    11 points
  2. I was lucky to have an unexpected clear patch for a couple of hours in the evening. I spent most of the time on visual observing, but did record the rather spectacular terminator with a single frame with my Olympus E-M5 MK11, 1/160 sec at 400 taken at 7.17 pm. I was using the SW 80ED on the AZ5. This was as the shadows lengthened across Ptolamaeus from sunlight catching the tops of some of the surrounding hills. This was a fine sight using my binoviewer. Archimedes' walls were just catching the sunlight on the E edge of Mare Imbriium and this area from Aristillius to Cassini in the
    7 points
  3. After numerous trashed attempts at M45 over the past few months (not to mention previous years) I've decided this is probably as good as it's going to get for me. This is 20x 30s and 20x60s of R, G and B taken with ASI1600 + Canon 200mm, pre and post processed in PI and then colour tweaked in PS followed by a minimal final noise reduction. I took some Ha as well (well you never know!) but that's not in the mix. I tried removing stars with Starnet++ but that didn't help (proabably operator error) and I tried combining both Histogram and Arcsinh stretch to try to get more colour into the st
    6 points
  4. Hi. IC2169 is a very faint Reflection Nebulae in Monoceros.This Nebulae is so faint it did,nt even show after a 600 sec sub.Also can be seen at the upper right is a smaller Nebulae NGC2245. This is an RGB image only as I found adding a luminance tended to produce larger stars,which I thought distracted form the image. It was taken using my 80ED scope and Atik ccd mono camera.18x 600 second subs were each taken for the RGB.The image was fully calibrated with Bias/Darks and Flats. Minimal processing was done in Photo-Shop. Cheers. Mick.
    6 points
  5. I've never lost my love for a touch of old Vixen green. Something about the sight of a Vixen green anything causes a rise in blood pressure even today. It must stem from my early days in astronomy when anything Vixen was way out of my financial reach, but it didn't stop me from lusting all the same. Today however, with the advances in electronics and a seeming preference towards all white mounts, Vixen green may seem dated and unfashionable. Yet their value in terms of reliability, durability, serious strength and longevity are undeniable, and there are many seasoned amateurs who are still as
    6 points
  6. Heya, Finally had a clear day, but seeing was fairly lousy. Was seeing limited even with a 120mm aperture today, plus wind. SSM reported an obvious downward trend as seeing got worse and worse, so I was not anywhere near where I typically would want to be. But, like fishing, even a bad day is a good day out under our star. Full Discs, Colored: High Res Faculae in CaK: Chromosphere Structures in HA: Seeing (SSM) Data (was poor today, and windy): Equipment: 150mm F8 Achromat + ED80 150 masked to 120mm F10
    5 points
  7. Hi everyone We're gonna have a go at the lower layering frames to get the white bits coloured. There doesn't seem to be any rules to calculate which exposure these should be. Can remember guessing this some time but wasted a lot of time on it. Visitor leaves tomorrow so must get the frames -in between the cloud it seems- tonight... These are 3 and 4 minute frames as we stupidly thought the shorter time would sort us, DUH. Any guidelines most gratefully received. As an anecdote: apart from advising on the colour scheme, our better halves got involved in competing for the mos
    5 points
  8. So this is a real mongrel. I don't own the scope, camera or mount that most of the data was acquired with. I couldn't finish it as I didn't have the Red data in short subs for the core. Its only 90 mins LRGB for the nebula and 30 mins (10 mins each) RGB for the core so its not going to set the world on fire but it was 'interesting' combining data from different scopes and cameras and making it all fit together. Managed to grab 15 mins in between showers tonight. Most of the data is from a ED80 and Atik 460 mono and a wee bit from a Takahashi 106 and Atik 16200 (just for the core). Processed en
    5 points
  9. This is the luminescence stack of about 6 hours of NGC 2903. I shot this one in Leo Constellation while I was waiting for the Triplet to rise:) I'll hopefully get the RGB data tonight and finish it. I found about 10 known asteroids in the field using Tycho software, pretty interesting. The dim galaxy directly above NGC2903 is magnitude 18.00, PGC27115. The first image is a severe crop. ASI 1600mm FSQ106 L: 50x300s Leo Constellation Thanks for looking. Full frame:
    4 points
  10. I've been trying now for a while to get a few minutes of colour data for the other half of this, but it's not happening, so here it is as it stands. I do have shorter data for the core but it's a hell of task doing this in LRGB. Maybe when I get more data I'll spend a day at it. LRGB of M42, consisting of two panels Left panel LRGB = 84/10/10/10 minutes Right panel L = 84 minutes Total time = 3 hours 18 minutes Even APP struggled with this, ended up combining in ICE, and then back to PS. Not the best out there, but it's always nice to get a bit of brown d
    4 points
  11. It had been sunny most of the day and there was a clear evening with the half moon high to the south. I had a spectacularly clear view of the terminator running from the Alpine Valley to Ptolemaeus (with a partially illuminated floor). In the middle was Sinus Medii and I was very pleased to be able to pick out Rima Hyginus with my Bresser 102s. It's not often the 5mm ep comes out, but it was very useful this eve. Rima Hyginus is a long rille separated by a small crater. There appear to be undulations to the north that were illuminated nicely by the shallow angle of the sun. The sketc
    4 points
  12. Managed to have a spell with my new ZWO ASI 178MC camera tonight. This was around 1300 frames using my Altair 72ED-R scope on the AZGTi. Processed in PIPP,AS and Registax. Thanks for looking :-)
    4 points
  13. Enjoyable catchup with several friends and retailers. Here’s the night vision contingent with David Nagler
    4 points
  14. And I was just about to send you my £1 donation towards your Tak fund.
    4 points
  15. So, although I had some issues with my auto guiding (which I found out afterwards) I did manage to get 9x180s exposures and 5 darks of Andromeda and give both stacking (using DSS) and processing (using GIMP). My first attempted DSO.... I am pretty sure that people could get far more information out of the TIFF file from the stack. Hopefully I will get another clear night soon. I am in a heavily light polluted area so I do have a clip in filter on my DSLR which I think took a lot away. More practise needed! Lance
    3 points
  16. Observing the Moon tonight, what drew my attention the most was Ptolemaeus sitting right on the terminator. There was a lovely long shadow, presumably from a mountain peak around the rim, which was very striking. I managed a smartphone shot of it to show what I mean. I had to over expose it a little to catch the shadow. Anyone else catch it?
    3 points
  17. Here's the reason I thought it would be a good idea...it all fits with room to spare... Later on, I plan to make a solid block (maybe with adjustment) to hold 3 x Star 71s and a TEC140 or equivalent (in a few years' time!) rather than spaced out on a plate. For now though, this will be fine to play with.
    3 points
  18. Hi Graham, A pleasure meeting you and your wife. Thank you for a faultless transaction. Hoping you have clear skies because I won’t be getting any now that I have a new toy.
    3 points
  19. Great discussion with David Nagler yesterday about night vision and TV’s market strategy. Though clearly he didn’t trust Peter or me not to swipe the Apollo 11 eyepiece for this photo - note arm carefully protecting eyepiece
    3 points
  20. I've compared my Skywatcher ED120 to my Tak FC-100DL quite a few times over the past 3 years. The Tak is completely colour free wheras the ED120 shows a touch of purple around the brightest stars but otherwise I feel that the Skywatcher is not shown up at all by the Tak. Or by my LZOS 130 triplet for that matter. This does not mean that I can't see any differences between these scopes but the ED120 optically holds up really well. It produces a cracking star test and I've used it at magnifications over 300x quite often. A few weeks ago I was at an outreach event and had the task of showing the
    3 points
  21. Just starting out on this journey...NGC 3184. Believe it or not, but this galaxy is over a full magnitude dimmer than IC-342, which came as a real surprise to me. Conditions have been quite bad--despite having been forecasted to be pristine (never understood why a live forecast would read "clear" when the sky is like pea soup). Despite the conditions I was pleasantly surprised by the data. I have collected over 100 subs, but have thrown out more than half due to elevated FWHM values. This is 45 300 sec Lum subs. taken with TOA 130 and ASI 1600. I know I need many more--and better condi
    3 points
  22. They are competitively priced. I would promise to send your change from the £1.
    3 points
  23. There's a beautiful FC100DF for sale on AB&S right now, at a great price too. Or may be a brand new FC100DZ would be an option. It's only money after all - Martin's money - so I don't mind helping him spend it. Here's another thought while I'm on a roll: There's the Practical Astronomy Show at Kettering on March 21, there were loads of refractors there last year and it would be an ideal opportunity to get to grips with a brand new Tak.
    3 points
  24. A couple pictures from 4:30pm and 7pm here in southern California.
    3 points
  25. Here you go first night observation with evscope under a bright 40% moon, very short observations. I am excited to see what happens with a darker sky.
    3 points
  26. Thanks ! I have a non-illuminated RACI on there at the moment. I tried an illuminated one on someone elses scope and rather liked it so when this one came up for sale I went for it and my ED120 now gets promoted from a 6x30 RACI to the older 9x50 that the dob was using. My scopes seem to have a "pecking order" @fozzybear and others: The first computer I worked with was in 1984, this Cifer 9000 Unix machine with a massive 10 megabyte hard disk and 5 1/4 in floppy drive:
    3 points
  27. Thanks for all the comments. I forgot to mention that the last time I used a 6" F8 Newt was 35 years ago, when I had a Fullercopes ota on a Charles Frank mount. Picture of my little roll off obsy in my parents garden. Spent many happy hours with that scope, it felt good to be using one again.
    3 points
  28. Managed to collect 30 more subs of much better quality--seeing was better and the sky was dar. It is a very rare thing for my lum subs to come off the camera with little to no gradient. The FWHM of the stack dropped from 3.4 to 2.5. Here's a bit of a crop to make viewing a little easier. I deconvolved the stack inlinear state.
    3 points
  29. 9 panel mosaic about 35 hours. 150 second subs with a zwo asi071. Esprit 100. Bortle 4/5 Some below a mixture of Tak Epsilon and Esprit, all with the asi071. All 150 second subs. Varying integration times from 5-10 hours. Richard
    3 points
  30. Article on all-night lights at Brighton & Hove stadium drawing ire of locals. Main emphasis in article is on disturbing local humans and wildlife behaviour patterns, though stars get a brief mention. I couldn't imagine the frustration of living near this for astronomy. Who designs this and thinks great, let's leave the lights on? Similar problems here, but on a much smaller scale (though the lights are much closer as well!) https://www.theguardian.com/uk-news/2020/feb/02/brighton-stadium-put-that-light-out-plea-all-night-glow
    2 points
  31. Comet C/2019 Y1 (ATLAS) imaged on 2020 January 27, month and a half after be discovered when had magnitude 17. Increasing rapidly its brightness in this image had already in magnitude 11,5 and will be observable with small telescopes and perhaps binoculars on March. It have a gassy coma with turquoise color very difuse with 2 arcminutes in angular size. Data and link to image: https://cometografia.es/2019y1-atlas-20200127/
    2 points
  32. I recently posted my design for a weather station in this section. https://stargazerslounge.com/topic/345153-indi-weather-station/ As I had bought several pressure/humidity sensors, as well as ir temperature sensors and ESP32 development boards, I wondered how small a weather monitor could get. The sensors are quite small, and so is the micro controller. Such a weather monitor wouldn't incorporate wind speed measurement nor a rain detector, since these take up more space. But otoh, there is seldom rain without clouds, so if you detect clouds, you should be safe. Here it is, a mi
    2 points
  33. Monday night I'd stayed up late baking and decorating a birthday cake for my daughter's birthday party the following day. The party was in the afternoon so I was working from home. My first opportunity for some astronomy came with a brief break between calls at lunchtime. My Equinox 80 was already set up with the TS Optics Herschel Wedge from the weekend. I was quickly out and observing the Sun with the sunspot, AR2757. Over the course of 10 minutes, I was surprised by how much detail could be seen. Many smaller spots or pores could be seen trailing the main spot. The day moved on and we
    2 points
  34. I thought Topic had peanuts in it. Can you tell it's cloudy?
    2 points
  35. They appear quite partial to small cubes of Mars bar too, so it's even on-topic James
    2 points
  36. I used a finderguider on my SW130PDS but I already had it from my refractors. Carole
    2 points
  37. Im Sorry if i am getting political here, but we are being constantly told by both local and national politicians, about cutting down on our usage of electricity and gas, and we are even being penalised by so called green taxes. Its not only Brighton football club, go around most towns and city centres at night and see how many commercial premises leave there lights on all night. It seems to me, we are living in a hypocritical society. One rule for you and I, another for businesses. Whatever happened to leading by example ?. Time for new legislation me thinks. You couldn't make this up. Jo
    2 points
  38. That is horrendous, Caroline Lucus will be the neighbouring MP, utterly shocking all in the name of supposedly maintaining football turf retention, barking. Petition signed.
    2 points
  39. Or how about an 8" f8 Robert Seriously though, your comment about convenience shouldn't be underestimated. 1600mm focal length can be a little unwieldy and I tend to use it for lunar or planetary sessions, not for star hopping around many targets. The EQ platform really helps too.
    2 points
  40. Well I've finally but the bullet and bought the full licence. Trial didn't expire until 9 February but there's no way I was going back so got it sorted. Just a shame it's still permanent cloud and with little chance of getting any imaging done for at least the next week!
    2 points
  41. I just processed it. It does look like something is going on in the corners on the right side but not the left (In the orientation of the download and my process. As the left side top seems OK to me and the bottom left OK (ish), I would suggest this is probably tilt though there could be another factor involved which I can;t quite fathom since the stars are elongated upright on the top right, but diagonally bottom right.
    2 points
  42. I’ll be honest the 115 you have is an excellent scope and very manageable the extra 15mm over a 100 is worth it it’s almost a 120 without the weight unless your going to up the aperture a lot more I’d say it’s perfect , better planetary views than the SE6 in my opinion and cuts through bad seeing better and a great engineered scope
    2 points
  43. As the scope would sound like a 90mm Maksutov then simply a wide field plossl eyepiece. The Vixen NPL range are considered good and not as costly as the TV offerings. The NPL 30mm would be good. On FLO at £35. Would give them the widest field they could reasonably expect, would deliver about 1.2 degree view for some of the bigger objects. Something like the BST Starguider at 25mm would give the same. They are at the £50 mark. However would I think be a better eyepiece for a future scope. The Starguiders are an eyepiece you could collect the full set of and use for some years. Co
    2 points
  44. How about a good book then? Something like this: https://www.firstlightoptics.com/books/turn-left-at-orion-book.html
    2 points
  45. Could I play the sympathy card and attempt a so called crowd funding. All the advice is very helpful. Thank you.
    2 points
  46. My observatory is sitting on paving slabs laid by a friend who works for the council. It is very stable and has a Pulsar dome sitting on it. I use an Ioptron tripier and a CEM60ec with refractors on it. No problems with walking gently past it when I'm imaging. I also didn't have any problems with my eq6 which was on the standard tripod. The garden used to be a car park so is really difficult to dig down any depth. i would imagine you'd only have an issue if you mounted a very long focal length telescope.
    2 points
  47. First picture from my first telescope. Explorer Scientific Comet Hunter on Meade LX70 mount. Taken with my Nikon D3S single exposure.
    2 points
  48. Good to hear you have made the scope usable. Re: sun filter. I hope you don’t mean the type that screws into the eyepiece. If so destroy it immediately as they are incredibly dangerous and must not ever, ever be used. They can shatter without warning possibly resulting in loss of sight in your eye.Sellers on eBay selling these should be reported to eBay so they can remove them from sale.
    2 points
  49. Interestingly, it wasn't visible when I took a shot earlier at 17.20, the pic above was at 20.48. Just shows how much the terminator evolves even during one evening.
    2 points
  50. Hi Great thread, can't wait for the next installment. I finished my own monster bearing block GEM about 18mths ago and have been enjoying it since. Its carrying about 30kg now as bits have gone on. But starting to collect parts, materials and ideas for a mark2! I used 2inch pillow blocks, and as you say, ended up fixing them to flat plates. I looked at the flanged bearings and couldn't see a way to make them work without welding up a bearing box (not in my skill set unfortunately!). I am amazed that your bolted up boxes are strong enough - they are very elegant solution. A prob
    2 points
  • Newsletter

    Want to keep up to date with all our latest news and information?
    Sign Up
×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.