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Found 126 results

  1. rotatux

    My new DIY sun finder

    From the album: Equipment and sites

    Designed on electronic paper, then printed and cut, all in a few hours.

    © Fabien COUTANT

  2. Managed to grab some H Alpha and Ca-K data whilst out this morning. Pretty windy at times so quite (pleasantly) surprised how well these have come out. Proms in Ha & Ca-K 6 Pane Ca-K full disk AR12490 @ 2000mm focal length.
  3. just a lonely sunspot today, not a lot happening in whitelight, but at least i got to try out my replacement 450d. taken with ED80, 2XED barlow,450d. 50 frames staxed with regi,coloured in photoshop. and no dustbunnys with the new camera"cool." thanks for looking,clear skys, charl.
  4. taken with ED80 2XED barlow 450d, 50 frames staxed with regi. thanks for looking clear skys charl. Merry Christmas everyone.
  5. the seeing is not very good,but i thought id best grab it anyway cos its been a rare sight the last few weeks. taken with ED80 2XED barlow,450d, 55 frames staxed with regi. thanks for looking, happy new year everybody. clear skys charl.
  6. Hi all, now finally after waiting for ages (at least it feels like this ), I had a another look at our home star through my new Lunt 50mm H-alpha telescope. We've been visiting my in-laws yesterday and this time I did my first sketch with reddish pastels. I'm not fully happy with the result: I used pastels and pastel pencils in different reddish colours (yellow, orange, dark orange, etc.) but it seems that they are not exactly just different brightness of the same color tone. Instead they appear to be really different colors.So I'm still trying with those to improve my results. As an alternative attempt maybe I'll go for just doing a sketch with chalk and charcoal like I do with my lunar sketches and put the color on it later at the computer. What I'm fully happy with is that I could show the sun in H alpha light to my family yesterday. They were indeed impressed. Telescope: Lunt LS50THa B600 PT Eyepiece: Celestron X-cel 10mm Date & Time: February 6th, 2016 / 1500-1530 CET Location: balcony, Dortmund area, Germany Technique: orange and red pastels and pastel pens on black sketching cardbox Hope you like it! Achim
  7. what a lovely sunny morrning, but seeing not great theres a lot of mist about and sols doing a little dance but it should get better as the day moves on. taken with ED80 2XED barlow,450d. 50/500 frames,iso200. thanks for looking, clear skys charl.
  8. Sunspot groups AR1787, AR1785 & AR1784 are prominent in this image of the rising Sun behind the James Thomson monument near Kelso & Ednam. James Thomson was a poet & dramatist born in the village of Ednam in 1700 and perhaps best know for writing the words of 'Rule Britannia'. Pentax K5 Pentax 800mm lens @ f45 Exp. 0.5 sec. ISO 100 Sunspot sunrise & James Thomson monument by mikeyscope, on Flickr
  9. Hello all, I have been researching for the past two months what equipment I will need to buy to photograph the upcoming solar eclipse, I have everything under control except the goto mount. Because I am new to this, forgive me if I have made any false assumptions or have any misunderstandings. So after going back and forth with my short-term goals, long-term goals, and budget, I have decided I want an equatorial mount since I have read that alt-az mounts are not well-suited for 30~60 second exposures, due to image rotation. Although the price is a little higher, I figure it is worth it since I want to be able to use the mount for non-eclipse photography in the future, like star clusters, planets, the moon, etc. . So I have my eyes squarely set on the EXOS-2GT, for its capabilities and its price point -- I really can't go higher than this price at this time. But I have struggled to answer some basic questions about this mount that I'm hoping you all may be able to tell me: Can the mount be aligned during the day? Can I use the sun for alignment? Other clever ways to align during the day that don't involve aligning before sunrise? Is the tripod interchangeble? Is there any reason why I may not want to use a shorter tripod than the one supplied with the mount? (this is purely for travel convinience, and reuse with other equipment) Is there any other eq tracking mount within this price range that you think is better for my needs? Is there any reason you would not recommend this mount for my needs? And lastly, can it be controlled from a laptop? (this is not for the eclipse, but in general, if I can re-use the mount to do precisely panned video, or panning time lapse video, it would be a big plus) (I'm assuming this mount does not have a shutter release port, is that correct?) (on this note, I am aware of cheaper alt-az mounts that do have this capability, but as mentioned above, i would rather go with an eq) Thank you so much, and do clue me in on anything else you think I should know.
  10. Here's a 10 frame animation. 1 frame per minute. It shows the movement of this large prominence over a very short time frame. A full frame shot to show the relative size of this huge prominence. And another shot with a black dot that shows the relative size of the Earth. Tech Details: Lunt 80mm Ha telescope, ZWO ASI1600mm cooled camera. Processed in AutoStakkert!2 and ImPPG, colorized and layered in PhotoshopCC.
  11. I've been using a Quark chromosphere now since May and just wanted to share what an absolute delight this piece of equipment is (albeit I never seem to have enough cloud free sky to get it right on band). I had been using a ST80 but felt this was lacking and not a great match for the Quark in terms of focal length. I've since moved to a 120mm refractor and hope the images show how capable the Quark is.
  12. I was watching the Mercury transit yesterday and took a few drawings off the images projected by my Newtonian. I'd like to get the directions right on the drawings. Where do S and W lie? I thought I had it worked out but I'm not so sure. And where can I find an explanation of the optical processes involved in the reversing, flipping, etc of images in optical trains? Thanks!
  13. 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!
  14. I just finished to work on the data of 2 weeks ago. The animation represent a close up portion of the Sun of 4 May. Images taken with a 100 ed refractor using a Daystar h-alpha filter at a focal of 2200mm, I reduced the focal do to a terrible seeing. I decided to follow for a couple of hours the NOAA 1734 zone, the bigger one of the week with the hope to catch a big X flares like the yeasterday one. Even if the seeing and the video compression had blured alot of details, the filaments and spicules movements are evident, also a couple of mini flares are visible during the time-lapse. Hope in bigger one next time. The mosaic instead was captured the last weekend at the same focal of 2200, 6 images at different exposure for disc and proms (click on it for the zoom). I also captured a serie of movies to assemble a time-lapse of the prominence, but still on working.
  15. Ok, maybe not as dramatic as the title would suggest but still Santorini is a geo-active volcano system so I'm going to claim that one. So as some of you may know we have just returned from holidays in Crete and went to Santorini for the transit, the whole place was spectacular. Truly a worthy place for witnessing such a special event. We witnessed some great sights too while we were there, the rising of a near full blood red moon and the dramatic sunsets but that's for another thread possibly. We stayed in a hotel villa high on the rim of the caldera and had a perfect view eastward over the ocean, the weather leading up had been perfect and the morning before I had a succesful trial run in clear conditions and had everything worked out. Settings were honed, best location found etc... However, that evening some disturbing developments were afoot which left me feeling a bit uneasy. You guessed it, cloud. It was the type of cloud that only forms at the top of mountains and nowhere else, lenticular I think. So to my disgust this was the scen that I awoke to in the morning. Unbelieveable, there had not been a cloud in sight for are whole trip or the days after. Thankfully though as you may be able to see(I do have better pics of the effect) there was a thin strip of clear air between the horizon and the cloud which was situated right over my head, although at the time I wasn't sure how it was going to play out. So it was now a waiting game to see what would happen next. Then at precisely 6:02am local time a first glimmer of orange began to peek over the horizon, YES!!!! I was going to be able to see it. My first few shots however were way out... the change of seeing had dramatically changed the settings I had figured out a day before and this played havoc throughout the transit and my plans. But still I had some degree of success and I am thrilled to be able to of captured and share with you some of the photos I took. Santorini Transit by Jarrod Bennett, on Flickr I do have some white light pics as well which I'll post when I get around to checking all the SD cards. There was a good 30 min or so chunk of the transit that I missed due to the clouds as the Sun got higher but it reappered towards the end so I'll go through it all and see what I can come up with. It's also worth mentioning that the Polarie performed reasonably well on it's solar tracking rate too. All in all I'm ectstatic to have seen such a special event. Jarrod.
  16. Could anyone share a link or two where the Venus transit will be streamed live tomorrow?
  17. 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:
  18. Hi All, First big thanks to Kev and Helen for some pointers on getting started. As always bang on the money. Ok, I borrowed a PST from Jon (Ford Prefect) for the transit and luckily got to try it out this morning. Good thing I did as I hadn't installed the DMK driver properly when reinstalling Win7 and the DMK doesn't focus with the PST at prime focus. I found an old 2 x barlow that had an unscrewable lens cell, I screwed that into the DMK which gives me a roughly a 1.4-1.5 image scale increase, but more importantly it will let me get to focus. The weather is not good here but focused as best I could (need more work on that) and I managed to get three AVI of cloud going over the sun. So this is the result. I've added the colour in Photoshop, I think that focus is off a little as I had to be quite brutal in Registax5 with the sliders... Any tips/suggestion gratefully received.
  19. Hi all, this is the Sun as seen from southern Ireland the 07th of July. Single shot taken with a Nikon D3100, Sigma 70-300mm telezoom lens, Baader Solar Filter.
  20. The bright thing in the sky appeared again. So I shot it. Baader CaK + ND5 filters, DMK41, Canon 100-400L Sun 20120721 Ha by Crestie Crazy, on Flickr DMK41, Celestron X-Cel 2x barlow element, Coronado PST Trying avistack for first time today so both stacked by it. Wavelets applied in Registax 5.1, finish in PSE9. Both files were just over a minute for over 1000 frames each. I have no idea what I'm doing in avistack but have now found the full auto mode. That'll do for now! This is now my best ever detail level in H-alpha. Still got a LOT more data to go through! Will concentrate on the Ha data, due to field of view limits with the barlow, I have to do the sun in two halves. So I've got two sets for prominences and another one for surface to go, then the nightmare of blending it that I never got working well... The CaK data still isn't sharp... in part this might be reaching the limits of the 100-400L and I need to get a bigger scope on the job, once I've ordered the appropriate mounting bits.
  21. AR 2671 18/08/2017 12:49 GSO 0.20 m Sky-Watcher NEQ-5 Pro SynScan mount QHY5L-IIC + IR cut filter GSO barlow lens 2.5x (APO) Astrosolar filter for photographic use (Baader Planetarium ND 3.8) f: 2500 mm f/12.5 Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/
  22. AR 2670 11/08/2017 15:55 First test for the new focal reducer GSO 0.20 m Sky-Watcher NEQ-5 Pro SynScan mount QHY5L-IIC + IR cut filter GSO focal reducer 0.5x GSO barlow lens 2.5x (APO) Astrosolar filter for photographic use (Baader Planetarium ND 3.8) f: 500 mm f/2.5 Matteo Vacca Milis, Italy http://vaccamatteo.weebly.com/ https://www.astrobin.com/users/matteovacca/
  23. Here are my humble attempts at my first total solar eclipse on 21st August 2017. Images were taken using a Canon 650D using a sigma 135-400mm lens (at 300mm) on a Star Adventurer Mini (SAM) tracking mount. Stupidly after taking night sky images at crater lake I left the camera using ISO800 so any inner corona detail has been lost (but the outer details have been captured). This probably wasn't helped by the high cloud that moved in about an hour before the eclipse. The mounting was a bit light for the lens (particularly the tripod and the ball head, rather than the SAM). The observing location was the John Day Fossil Beds in Oregon. It was busy but not the madness that was seen at Madras. Still it was an amazing spectacle and well worth the effort. The first image is a combined image of the corona from 3 separate images of different exposures and the second is a more artistic shot of the diamond ring. Thanks
  24. Help! With the eclipse approaching, I am trying to get a full sun disk with my Celestron NexImage Solar System Imager through my Celestron NexStar 5se telescope. I am a teacher and can't take off what will be the first day of school. However, I can live stream the eclipse for the school. The problem is, my camera only gives me a view of (roughly) 25-ish % of the sun. I have a focal reducer (.5), though it is a cheap one. I tried using it with the camera, but I couldn't tell a difference. Do I need an eyepiece extension? Whatever I do, I need to do as cheap as possible--makes for a happier marriage. Incidentally, I am very much considering upgrading to the Meade Instruments 07545 LX f/6.3 Focal Reducer and Field Flattener, but I'm not sure if it will help if I'm not using it correctly (I'm not even sure a focal reducer will help at all to make the sun smaller). Technical stuff you might need to know: Camera: 1280x720 resolution, 3.0 micron square pixel size, sensor size is 3.86mm x 2.18 mm Telescope: Schmidt-Cassegrain, 125 mm aperture, apparent field of view 1 inch, focal length is 1250 mm I appreciate any help you can offer! I'm fairly tech savy, but pretty much every place I've visited speaks in a technical vernacular that's above my experience.
  25. From the album: Solar Images

    The Sun Coronado PST & QHY5L-II

    © MGough 2016

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