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Found 125 results

  1. MarsG76

    HAlpha Sun - 18 Apr 2014

    From the album: Solar System Objects

    The Sun taken through a Coronado SolarMax II solar scope with a DMK21au618 CCD.

    © Mariusz Goralski

  2. MarsG76

    HAlpha Solar Sphere - 18 Apr 2014

    From the album: Solar System Objects

    The Solar disc in Halpha taken with a Coronado SolarMax II solar scope with a DMK41au02 CCD.

    © Mariusz Goralski

  3. I am thinking of getting a Lunt 50mm scope. I want to image as well as observe. I am thinking I could put my ZWO on the scope and capture video. My question is, does focal length in a solar scope relate to the FoV as it does for a non-solar scope? The field of view calculator (http://www.12dstring.me.uk/fovcalc.php) suggests I could just about get a full disc with a focal length of 350mm (the 50mm Lunt), but not with a focal length of 500mm (the 60mm Lunt). Is my logic correct?
  4. So, I am going to take my first steps into observing and hopefully imaging the sun, and get myself a filter for the telescope, just so that I have something to do, when I am working nightshifts, or the weather is bad at night. From what I can see, all I would need is a filter like this one https://www.firstlightoptics.com/solar-filters/astrozap-baader-solar-filter.html. Is that so, or is there anything else that you would highly recommend that I get, and why? My telescope is a Skywatcher 150PDS on a Celestron AVX mount. On the same time, I am looking at buying a baader hydrogen alpha 3mm filter for imaging. Is this also something I could use for observing, or it is solely for imaging? Just curious. Any comments, tips, advice would be very much appreciated, as I would rather not damage either my eyes, or more importantly my equipment! (jk)
  5. Just caught up with The Sky at Night from Sunday 12th Aug. Subject Coronal Mass Ejections from the Sun. Must admit I am slightly disappointed, if I am even allowed to criticise such a National Instution. First, the episode subtitle, "Death Star" . . . Groan. Then the intro from Maggie A-P included the statement that a CME's "could devastate our technological world . . " She said something similar at the end. IMHO neither statement was backed up by the rest of the episode. The boffins suggested some unquantified damage to power grids & satellites "which might have hardening or redundancies" So I was left with the impression of some Millenium Bug style media hype. Would definitley be great aurorae though. What do you think?
  6. MarsG76

    HAlpha Sun disc - 25 Jan 2015

    From the album: Solar System Objects

    The Disc of the Sun taken through a Coronado SolarMax II solar scope with a DMK41au02 CCD.

    © Mariusz Goralski

  7. MarsG76

    HAlpha Sun - 25 Jan 2015

    From the album: Solar System Objects

    The Sun taken through a Coronado SolarMax II solar scope with a DMK21au618 CCD.

    © Mariusz Goralski

  8. MarsG76

    Sun in white light - 17 July 2012

    From the album: Solar System Objects

    Solar disc taken with a Canon 40D through the 8" SCT at 1280mm focal length.

    © Mariusz Goralski

  9. MarsG76

    Diamond Ring eclipse - 14 Nov 2012

    From the album: Solar System Objects

    This "Diamond Ring effect" photo is one of the many photos I have taken during my one and only time I have experienced a Total Solar eclipse to date. I made sure that I was up in Cairns on 14th November 2012. I arrived the day before to a overcast location. I found a perfect spot on the coast from where I would see the eclipse and camped out in the car... viewing spot preservation :-). Before catching a few hours of ZZZs I did setup the equipment that I was using for the capture of the momentous event and covered it up in plastic, which was lucky because it started to rain during the night as I was trying to go into sleep mode. The rain was making me lose hope of seeing anything but I was lucky, at sunrise rain stopped and just before the stars of the eclipse the clouds miraculously parted for the event.... as the clouds returned immediately as the eclipse ended.... some one up there was smiling at me. The vast majority of the spectators, including Television crews, NASA and CSIRO scientists, went about 45 minutes further north, to Port Douglas, since that location was supposed to have the longest lasting eclipse.. BUT they were completely covered in cloud. Funny thing is that I studied the weather maps for the few days before the eclipse and determined that Townsville will be the best chance to see the eclipse, but at less than 20 seconds for totality I though that the next best chance was Cairns, so I risked it... Couple of days prior I contacted various people, including the morning program that was heading to Port Douglas and warned them that Port Douglas will be overcast and Cairns has the best chance of filming the eclipse.. their reply "NASA will be there and they know more than you"... "fine" I thought but when I was informed that Port Douglas was covered, I sent a screen shot of my DSLR screen to that "producer" and had a bit of fun with him.. called him and after he asked and was told that that'is my pic, and I gloated about "NASA knows more huh, hahaha", he hung up... that my friends, is the icing on the ecliptic cake.

    © Mariusz Goralski

  10. From the album: Solar System Objects

    This is one of the many photos I have taken during my one and only time I have experienced a Total Solar eclipse. I made sure that I was up in Cairns on 14th November 2012. I arrived the day before to a overcast location. I found a perfect spot on the coast from where I would see the eclipse and camped out in the car... viewing spot preservation :-). Before catching a few hours of ZZZs I did setup the equipment that I was using for the capture of the momentous event and covered it up in plastic, which was lucky because it started to rain during the night as I was trying to go into sleep mode. The rain was making me lose hope of seeing anything but I was lucky, at sunrise rain stopped and just before the stars of the eclipse the clouds miraculously parted for the event.... as the clouds returned immediately as the eclipse ended.... some one up there was smiling at me. The vast majority of the spectators, including Television crews, NASA and CSIRO scientists, went about 45 minutes further north, to Port Douglas, since that location was supposed to have the longest lasting eclipse.. BUT they were completely covered in cloud. Funny thing is that I studied the weather maps for the few days before the eclipse and determined that Townsville will be the best chance to see the eclipse, but at less than 20 seconds for totality I though that the next best chance was Cairns, so I risked it... Couple of days prior I contacted various people, including the morning program that was heading to Port Douglas and warned them that Port Douglas will be overcast and Cairns has the best chance of filming the eclipse.. their reply "NASA will be there and they know more than you"... "fine" I thought but when I was informed that Port Douglas was covered, I sent a screen shot of my DSLR screen to that "producer" and had a bit of fun with him.. called him and after he asked and was told that that'is my pic, and I gloated about "NASA knows more huh, hahaha", he hung up... that my friends, is the icing on the ecliptic cake.

    © Mariusz Goralski

  11. I pointed my solar telescope at a small prominence in the hope that it would do something whilst I imaged it. Because I am new to solar imaging I don't know whether this is particularly lucky, or if it's something that's easily caught. Over the space of about an hour I captured 18 videos, each of 1000 frames, using a mono DMK21. I stacked 10% of the frames, and then manually went about aligning and cropping the 18 stacked images because ImPPG didn't like to do it for me. I also took an image of the solar surface, just to get rid of the white in the image, and add something visually interesting to the solar disc. I used a curves adjustment to make it orange, and then made a movie in MS Movie Maker. Hope you enjoy it! solar_prominences_long.mp4
  12. GlassWalker

    Sun 21-7-2012 Ha + CaK

    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.
  13. TractionMan

    Venus Transit 2012 Pic01

    From the album: Solar & Lunar Shots

    The Venus Transit, June 6th 2012. Shot with my old Konica Minolta Dynax 5D and Minolta 100-400 Zoom lens + Baader AstroSolar Safety Film.

    © Stellan Johansson

  14. GlassWalker

    Sun 20120809 CaK

    From the album: Sun

    Sun in CaK. Lots of spots...
  15. David Smith

    The Sun 30th Jan 2016 Ha & Ca-K

    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.
  16. Matteo

    AR 2670 11/08/2017 15:55

    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/
  17. 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.
  18. 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!
  19. Matteo

    AR 2671 18/08/2017 12:49

    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/
  20. acr_astro

    First sketch with Lunt 50mm PT

    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
  21. 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!
  22. Jonathan Rees

    Help - Full Sun Disk

    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.
  23. 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:
  24. Whirlwind

    Total Eclipse Images

    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
  25. TractionMan

    TheSun 20120619 11:41

    From the album: Solar & Lunar Shots

    Got the binos out to look for sunspots today and then I thought I'd snap a few photos as well. Konica Minolta Dynax 5D + Minolta 100-400 zoom lens + Baader AstroSolar Safety Film. Image quite heavily cropped and I tried to change the (colour on the right version) to get a bit more pleasing result.

    © Stellan Johansson

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