Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_dslr_mirrorlesss_winners.thumb.jpg.9deb4a8db27e7485a7bb99d98667c94e.jpg

Search the Community

Showing results for tags 'transit'.



More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


Forums

  • Welcome
    • Welcome
  • Beginners
    • Getting Started General Help and Advice
    • Getting Started Equipment Help and Advice
    • Getting Started With Observing
    • Getting Started With Imaging
  • Community
    • Official SGL Announcements and Events
    • SGL Challenges and Competitions
    • SGL Star Parties
    • Star Parties & Astro Events
    • Celestial Events Heads Up
    • The Astro Lounge
  • Retailers
    • Sponsor Announcements and Offers
    • FLO Clearance Offers
    • IKI Observatory
    • Supplier Reviews
  • Astro Classifieds
    • For Sale / Swap
    • Wanted
  • Equipment
  • Observing
  • EEVA (Electronically Enhanced Visual Astronomy)
  • Imaging
  • Science
  • WADAS's WADAS Discussion Forum
  • Beaufort Club's Topics
  • Swindon Stargazers Club's Topics
  • East Midlands Stargazers''s Topics
  • Central Scotland Astro's Topics
  • SGL Cumbrian Skies's Topics
  • Herts, Beds and Bucks Group's Topics
  • SGL East Anglian Group's Topics
  • South Leicester Observers's Topics
  • South Wales Group's Topics
  • SGL Surrey Observers's Topics
  • South Yorkshire Stargazers's Topics
  • Yorkshire Astronomers's Topics
  • Devon and Cornwall's Topics
  • West Midlands's Topics
  • Essex Cloud Dodgers's Topics
  • Essex Cloud Dodgers's New equipment
  • NLO and Planetarium's Topics
  • Astronomical Society of Edinburgh's Discussion
  • Dorset Stargazers's Topics
  • Hairy Stars Club (Comets)'s Tutorials and Guides
  • Hairy Stars Club (Comets)'s General Discussion
  • Hairy Stars Club (Comets)'s Observing Campaigns
  • Hairy Stars Club (Comets)'s Analysis results
  • Hairy Stars Club (Comets)'s Useful Links
  • Pixinsight Users Club's Pixinsight Discussion Forum

Calendars

  • Astro TV
  • Celestial Events
  • SGL Calendar
  • Astro Society Events
  • Star Parties
  • WADAS's Events
  • Beaufort Club's Events
  • Astronomical Society of Edinburgh's Events
  • Dorset Stargazers's Events

Blogs

There are no results to display.

There are no results to display.


Find results in...

Find results that contain...


Date Created

  • Start

    End


Last Updated

  • Start

    End


Filter by number of...

Joined

  • Start

    End


Group


AIM


MSN


Website URL


ICQ


Yahoo


Jabber


Skype


Interests


Location

Found 55 results

  1. Just bagged 10 minutes between the clouds and got to see the Mercury shadow transit! Its so long since I used the Lunt that I took a few seconds to get back into the groove of tuning the double stack and letting some air into the tuner as it was flat. Not much else on the disc - 3 x sets of proms, 3 tiny filaments, saw one small bright flux patch briefly. But the Mercury shadow was nice and clear and a decent sized patch too. Just got back inside before it started spotting with rain! Fingers crossed for another clear patch later ... Alan
  2. We are hoping to observe the transit in school (Don’t panic - we have done several transits and partial eclipses in the past so we are fine on the safety aspects - thanks). However does anyone know how I can get hold of some links to use in advance of the day that we can use to put some professional feeds up on the large screen tellies we have linked up to the computer systems these days – I am told that links on YouTube are the easiest to handle on the slightly clunky system we have to control them. My question comes from reminiscing with colleges that my daughter and I had stayed up to watch first contact of the last transit of Venus live from Hawaii before swapping to Mt Wilson. (We were also up before dawn on top of the local hill fort as the sun rose having lugged an old 4” reflector up there.) Of course at the time we were just browsing through the internet not taking good note of sites we were on.
  3. We are running a session at my local society on transits and occultations. One station will focus on exoplanet transits, and we'd like to build a very simple model to demonstrate this. We have a star (light source) and an orbiting "planet" but I need to work out how to detect the changes in light intensity and display this on a laptop, like a classical transit photometry trace below (taken from https://heasarc.gsfc.nasa.gov/docs/tess/primary-science.html). Is there a way to take a feed from a DSLR through the USB output to do this, else I could get an adapter for my ZWO and put an EOS lens on the front of that. I really do want a light intensity vs time trace in real time on the laptop. This model will be run in a darkened room. Thanks for any comments. James
  4. until
    GRS Transit on Jupiter, crossing the meridian at 4.18am with Jupiter at just over 21 degrees altitude. GRS starts to come onto the disk at around 2.10am, disappearing at around 6.15am. A couple more events too, an Io Shadow Transit starting at 4.22am and an occultation or Ganymede at 4.29am. Full timings in the attachment. Best time to view is probably 5.18am with both shadow and GRS well positioned.
  5. Here is my video of the double shadow transits of Io and Europa in color with a little processing. More musical atmosphere with "La Langue des Sentiments". Is it easier to see the shadows in this color image? Kaleidoscopic skies! Reggie
  6. Hi, since quite some time I wanted to image a ISS moon transit. After my successfull double ISS solar transit I tought that could be another nice "thing to have". After all the fuzz about the super moon I decided "I need no sleep!". Since my Mak127 with my Nikon5100 is barely able to frame a "normal" moon, and not able to get a full moon on video, I used a Vivitar Series 1 Zoom adapted to my ZWO ASI 120MC on my NexStar SLT. That left me with quite some low resolution but I tried anyways. The night was very clear, there was just one thing which worried me. The big walnut tree could be in the way... I tried to measure and plann with stellarium and came to the conclusion that it would work from my terrace, sitting in the warm house imaging. First I wanted to image from a window in the first floor but that would have meant very bad air or let the room cool out heavyly. I took some nice shots around midnight and again slewed the scope to the expected position, just above the walnut tree. So I sleeped a bit and started to align the scope again at 4:00 MEZ, the transit was expected at 4:25:40. The moon was high enough still and I was quite sure it would work out. At 4:20 there was suddenly some strange shadows, then a trunk started to "move in", dang not enough time to pack the telescope and move to the garden. I hoped that I could make it to a gap in the tree in 5 minutes, but no.... So I ended up with a successfull imaged transit but having some shadows. I get now the chainsaw... ;-) Spot the ISS close to the center. The incredible 58fps of the ASI produces nearky a continous line of ISS outlines: So now I am tired but the outcome was despite my error quite ok. Just preparing a video showing the realtime transit. Cheers, Carsten
  7. My first attempt at photographing a Transit and I decided to try for the 2nd and 3rd Contacts, but of course as those in the UK will know, the final phase of the Mercury Transit was clouded out. So, here's my attempt to capture "2nd Contact" using a Canon 600D (unmodded) at eyepiece projection with a Baader Hyperion 17mm, Baader Solar Continuum filter, Lunt Herschel Wedge and a Skywatcher ED80 DS Pro on a HEQ5:
  8. This was probably my best effort... 900 frames at 12:28pm - earlier ones were battling exposure levels through the clouds! ED80, DBK camera, stacked in AutoStakkert then processed in PSCS5. Not a patch on some of the other images posted, but am pleased to have got this much!
  9. Hi all, just in case you get clouded out tomorrow, or can't view the event itself because of work, these two apps for IOS and Android should help you observe it; https://appsto.re/gb/9Pjacb.i https://play.google.com/store/apps/details?id=com.ideorum.mercurytransit&hl=en Have fun!
  10. Following on from the previous successful imaging session at approx FL 5100mm, I was eager to get out there again! Local conditions seemed very poor early on, but improved a little later on when this was taken. I seemed to be struggling to get any decent contrast using my usual settings, I did look a little hazy most of the time. So I decided to try a similar technique I use for my Solar imaging. This involves using a pretty low Gamma setting (30) and a high Gain setting (80) then I adjust the exposure to fill the histogram to around 70%. Not sure what effect this would have in better clearer seeing conditions, but I think I will probably try it. Never completely satisfied as usual but fairly pleased with the end result in the conditions. C9.25/ASI120mm, RGB, 60 seconds per channel, stacked in A/S2, combined in C/S2.
  11. Everything seems too perfect for now. There's an ISS transit of the sun on late Wednesday morning, visible not too far away from me. Two weather forecasts currently suggest it'll be clear skies then. What could go wrong? Well, the weather forecast is for almost 2 days away so there's plenty of time for it to be wrong. Also, I haven't managed to ask my boss yet if I can take an early lunch to catch it... I need to plan where I want to see it from, the ground track passes through the Cotswold water park and there's various car parks in there I could try. Since I will be imaging from a car park, I can take more kit than I did for the Venus transit previously, and will go with both Ha and white light kit. So rig 1 will be PST capturing continuous video. Rig 2 will be DSLR with solar filter... but I'm not so confident in getting the timing just right for this one as it's only 0.8 second window!
  12. Hi all, the weather wasn't promising but I thought I would stay under the rain and take the chance. At sunrise, I started shooting without any filter (humidity and clouds were enough as filters) and I'm so happy I was able to capture Venus passing in front of the sun :D Click to enlarge:
  13. As per the heads up, GRS was transiting at 6.02am this morning, so with the promise of clear skies the alarm was set. I was too lazy to setup the AZGTi further down the garden, which would have been better, so I was stuck closer to the house and trees with the scope on the Giro-WR. Lovely views right from the start really, GRS heading for the meridian showing some nice colour although not as dramatic as I've seen it in the past. I could see the white separation between GRS and SEB, north and south polar regions and what I assume was the South Temperate belt and Zone. Hints of a festoon dropping into the Equatorial Band. This was another occasion when I tried cyclops first, then switched to the binoviewers to see if I preferred it. Binoviewing, on this occasion, definitely made the detail easier to access although that has not always been the case for me. I was at x230 ish and floaters were well controlled. I thought the seeing dropped off after a while, until I defocussed and realized I was observing through the twigs of one of our trees! Amazing that I could still see some detail even then. Loppers required before the next outing I think, plus putting the other pillar extension on! What a lovely way to start the day. Blackbird singing his heart out and the gulls floating gently overhead on their way to the reservoirs. The Parakeets had yet to start their noisy morning commute! Two last surprises. I thought Saturn might be visible, and did catch it just before it was occulted by......my house! OK views but good just to see it again. Finally, despite it being quite light at gone 6am, Arcturus was clear and I could also still see Izar so I popped the scope onto it. What a beautiful sight! Very well controlled faint diffraction ring around Izar and its secondary was as clear as I've seen it, lovely separation and nice almost greenish blue colour to my eye. It has always been bluish grey to me, so perhaps just a trick of the daylight. Great way to finish off, then back in for a warming cuppa and a little three year old who wanted a cuddle .
  14. until
    As per Chris's post, GRS and a shadow transit of Io are visible tomorrow morning, weather permitting of course! Io Shadow Transit starts at 2:28am, finishing at 4:39am GRS Transits at 3:32am, and Jupiter itself transits the meridian at 4:53am Between 3:30 and 4am could be an optimum time, Jupiter at around 19 degrees and above, not far off its highest at 21 degrees.
  15. Double transits of Io and Europa across Jupiter, shot just after midnight with the Orion Deep Space Video Camera II through the Orion 127mm Mak. Io's shadow is more prominent on the left, on the upper belt. Europa's shadow is smaller and is located on the extreme upper right of Jupiter (above the belt); it peeks in and out because of the less-than-optimal seeing. Also, enjoy some original space music by my band, THE FALSE DAWN, La Langue des Sentiments (The Language of Feeling). Clear skies! Reggie
  16. It occured to me that I should share with you the timelapes of this year's Mercury transit as seen from Czech Republic. The clouds have parted for some 20 minuts, allowing me to capture this timelapse. I shot it with a modified webcam, Baader 2.25x Barlow and UV/IR cut filter, using my former SW MAK 102/1300.
  17. Hi, after a long time I finally had time and a reason to image a bit. And it was NICE. And cold ;-) But for good, all my equipment worked. Dewcap heater keept the corrector plate clean. Motor Focusser worked via Bluetooth. Celestron Mak127 NexstarSLT, 2x Barlow (cheap one), Nikon D5100. After testing a Rasperry Pi cam as Astrocam (worked soso...) I started just in time to get the entering of Europa. I tried several images but so far only the FullHD videos seem to have good data in them. The attached image is one I processed just after the session (3 o Clock in the night). Today I realized that I just choosed the one where Europa just had entered, tired and frozen I tried to see Europa more on the planetary disk and completely ignored the pimple "artifact" left :-) Processed with PIPP for cropping and pre-process, then Autostakkert! (3x drizzle) and then Registaxx for the Wavelet magic. Today I will look if there is more data to process. The entering of Io I watched in the eyepiece, quite interesting! Cheers, Carsten
  18. Hi, As the title suggests. Poor weather here, but it would be good to see other people's images! John
  19. Hi, due to the exact prediction from calsky.com I was able to get a double solar transit of the ISS. I found a nice place for observing the two transits at maybe 200m from the calculated crossing of the central pathes. Technic was working flawlessly and so I could take two videos. Here is a video just the raw images: https://youtu.be/PFsZTPoM-ro The combined image is not aligned so far, so the "pilot" of the ISS seems a bit drunk. Ok it was the seeing and wind gusts. I will do a better aligned version when I got some time. Cheers, Carsten PS: Translation of the image caption: Place: South of Berlin, west of Rangsdorfer lake Time: 21 April 2016, first transit 14:27:31 distance to ISS 548km, second 17:39:13 distance to ISS 922km
  20. Hi all, Was taking some white light sunspot snaps with my SCT and DSLR and spotted an object moving fast across it. Had a look at CalSky.com but couldn't find anything obvious (though I'm not sure I'm using the site right). Anyone got any idea what this might be? Satellite or...other? Cheers Jim
  21. First, I would like to say,.. great new look Stargazers Lounge! I have been wanting to write this for some time now,.. Believe me! Unfortunately, I'm finding it harder to stargaze and report my findings these days. The exam period combined with the extended hours of daylight make it hard for me to make my way unto my porch with the necessary darkness to see anything worthwhile. However, I had been waiting impatiently for this day to arrive for awhile now. It was introduced to the world weeks ago (even if I had known about it for some time) as the astronomical event of the century. This was no fancy name since it would take over a hundred years for this phenomenon to happen again. At first I didn't want to be too excited since I knew that my success in seeing anything would depend on the weather. When the long range forecast seemed favourable, although a long shot since such predictions are rarely accurate, I extended my efforts to prepare myself. I researched the subject extensively: How could I experience the transit of Venus safely (for both myself and the equipment used). All sources pointed in the same direction: I was not, under any circumstances, to use my telescope since the aperture at 10" was too great. To point it at the sun would result in damaging my oculars and secondary mirror. I came across a project which greatly appealed to me. It involved binoculars, a tripod and the ability to project the image of the sun unto a white piece of paper. I would like to thank this forum for their many helpful suggestions during the preparation for this event. For this to work properly, I had to add some shadow since the beam of light would not be seen in broad daylight. I therefore added a piece of cardboard paper around the lenses and covered one of the eyepieces for better viewing. It was proposed that I line an extra box with black paper to provide the extra contrast I would need for a pristine view. It was also suggested by some that I could indeed use my telescope if the aperture was reduced to 2". This could easily be done with a piece of plywood but,... I resisted (well actually, the correct word for it was that I was insecure). I settled that night with my binocular project and waited for the transit to begin: I had trouble sleeping the night before since I had important plans for school and was nervous / excited as to what the next day would bring. At 4:00am I gave up trying to sleep and made my way to the kitchen where a waning strawberry moon (the full moon was the day before) greeted me. It was at that very moment that I knew that everything would turn out fine. In the end, my responsibilities regarding the final examinations at school went extremely well, promising me a successful evening. Well, not everything went that smoothly at first but,.. I had to believe that it would all work out. I waited for the transit to commence by watching a countdown online and made my way outdoors. Two of my students had already made their way to my house for the show. I tried in vain to see it but all the projection revealed was a fuzzy glow. Not a speck of Venus could be found. I simply could NOT focus! Frustration set in when my students decided to leave because Venus was giving us a "no show". It was at that moment that my eyes turned towards my telescope. Some had said on this forum that it could work and my time was running out since the sun was threatening to set over my neighbour's house. I grabbed for my telscope cover which had a hole of 2" already prepared and set up one last time. My husband helped me align the scope and take the picture since it was hard to hold the box and do all of this at the same time. Once we saw the projection of the sun, we focused the telescope and there it was,... It was Venus! I admit it,... I cried. Steven and I took pictures as the sun slowly disappeared behind my neighbour's roof. It was a shadow, a dot,... but it was my dot, my capture, my experience! It makes us wonder though: For a handful of hours (give or take a few), the world had caught a fever that had united them with one quest: To experience the transit. In one evening and one morning (depending which area from earth you viewed it from) there was one goal. It had nothing to do with religion, politics, debatable issues, money,... It had everything to do with experiencing a small something that was beyond our immediate grasp. Thank you Venus for sharing your journey, vision and a certain hope for the answers / questions of tomorrow! Isabelle
  22. 5:06am No sign of Venus here... hang on, that's not the sun is it. Wrong direction! 5:11am The view looking in the right direction. Cloud... 5:22am I see you! 5:27am Although it had moved away from the low cloud, it moved into another band. 5:31am At last, a clear shot. 5:39am Making contact on the way out... 5:42am The kit in action. 5:54am Barely visible still... the sun went behind some thin cloud after this so I didn't catch the exact moment Venus disappeared. Kit used: Canon 7D and 600D. Canon 100-400L and 15-85. Baader solar film ND5 on the 100-400L. I also took some video I might sort out later. Very tiered now. Stayed up to past 1am watching the Nasa feed. Woke up just before 4am... I did plan ahead and took the day off work. Next stop: bed.
  23. After A Very Loooooooooooong Time, This Is My Try At The Transit, With My Panasonic Fz 28 And A Sun Filter (No Telescope)
  24. 5:30am for me... my first solar pictures ever! Well worth the effort... I don't know still how to stack pictures or what is the right way to process them... I'm starting to read about it now, i hope i'll manage the basics soon! Enough of talking.. here are my humble results: I regretted not having the adapter to use the eyepieces with the camera... but I still enjoyed! Cheers, Rui
  25. It won't happen again for another 105 years and it's unlikely that anyone on the earth now will be alive for the next one, apart from maybe a few young kids/babies who were too young to see it this time. I was looking at the Iphone/Android apps to time the transit from around the world and reading about this type of technology (Smart phones) not being available just 8 years ago during the last transit. (Ironically the simulations worked, but the app crashed on the day!!) It's amazing how technology has moved on in such a short time. During the transit before that, we were barely able to perform powered flight, now we've been to the moon and people are living in space. So what will technology be like for the next transit of Venus? Maybe people will live longer by then, so our children might see it! Will this forum still be the same, or will there have been another software update by then LOL? I don't think anyone could have imagined the technology we have now a hundred years ago and it's hard to imagine what will develop over the next 100 years. I hope humans will work things out an not make a mess of it!
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.