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DirkSteele

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Posts posted by DirkSteele

  1. 7 hours ago, teoria_del_big_bang said:

    Brilliant images but oh so cruel when I have just had to cancel our holiday to Spain due to be taken in 3 weeks time. 

    Steve

    That sucks, sorry to hear that. We cancelled our plans for the year back in April as I was rather pessimistic about how this year would play out. We are doing a staycation later this year. Hoping we do not fall foul of local lockdowns, as will be packing a scope. Won’t be the Bortle Class 1/2 that the island above benefits from but will be nice to escape central London light pollution.

    • Like 1
  2. Been digging though old photos of trips away (unsurprising in the current difficult environment) and found myself looking at our 2015 trip to Benguerra Island in Mozambique. On the beach is an old Dhow fishing vessel which came ashore during a typhoon and they converted it into a bar. It is pretty amazing place to have a drink.

    991CF07A-FC6A-4A9B-95F2-BC673583E57E.thumb.jpeg.ad9c6456c56f903c8c4fe1c5a5471051.jpeg

    We also visited in 2019 and this time much earlier in the year when the central Milky Way was rising rather than setting. Provides a nice contrast. The canvass has expanded over those 4 years and the girl at the bar was now my wife rather than girlfriend.

    5F56891D-7CB9-4CA7-96E1-41B9C36A8D00.jpeg.79abecf261ca6221f8bbc369e628cf77.jpeg

    Both images are composites with foreground and background images taking moments apart. The 2015 image was 2 sec foreground at ISO800 and the background was 20 secs at ISO5000. Both at f/2.8 and 22mm focal length. I think I pushed the ISO a bit much and the sky is a bit grainy.

     

    The 2019 image was 2 sec foreground and 25 sec background at ISO3200 with the same camera and lens.

     

    All processing in Lightroom and combined with a layers mask in photoshop.

     

    • Like 6
  3. Taken about 55 mins after sunset, this is a 4 pane panorama of the Zodiacal Light on vacation on Benguerra Island in Mozambique in early July 2019.  There was a tourist fishing vessel moored in the bay which had a bright light point towards the beach which was illuminating the sand.

    1210D82D-BC13-4B06-8F28-FDF18EF7377B.thumb.jpeg.8cf82f3aebe4a6549fe944dd17f0cd0c.jpeg

    Each image was 25 seconds at ISO3200 and f/2.8 using a Canon 70D and a 14mm L lens (equivalent to 22mm on the crop sensor). Stitched using Microsoft ICE and processed in Lightroom.

    • Like 6
  4. My wife not only selects places around the world with access to very dark skies, but she will ensure we travel between 3/4 and 1/4 moon to minimise its impact on my stargazing.  Its a win - win in her mind, as she gets to go to amazing places, and I get to stargaze under Bortle Class 1 and 2 skies.

     

    Even our honeymoon was timed to match that lunar calendar (and by extension our wedding as that was a week early around full moon)!  Worth it though....View above our villa.

    1323355442_VimiziPano-1Resize.thumb.jpg.ef6c4eb2c1527c5e960e794e197ccfaa.jpg

    • Like 5
  5. 8 hours ago, JeremyS said:

    You’ve gotta be pulling our leg Matthew: surely there’s no lens in that at all? 🤔

    Or is it that those coatings on Tak lenses really are as close to perfection as it’s possible to get?
     

    Between you and me, I made a howler with my Tak Extender CQ 1.7x The other night. I couldn’t see anything through the scope. Then I realised I has left the cover on the lens end when I assembled it 🤫

    Ha! Snap. Been there, got the T-shirt.

     

    Certainly panic for a second or two until the penny drops.

    • Haha 1
  6. 17 minutes ago, Craney said:

    Wow !!!... that is some shot.   

    Having lived in the Southern hemisphere myself  for a few years I found  it  does take time to accustomise yourself to the sky being 'upside' down . I always tended to use the Northern constellations as a reference.  ie  in your shot I spotted the Square of Pegasus and then I was up and running.

     

    I do similar when I am down there. Once I am orientated I can usually work my way into the Southern constellations. Though I will never get used to Orion being upside down!

    • Like 2
  7. The reality is there is a lot more than 5 galaxies in this image.  This second image below was quite painstaking to put together as Astrometry.net refused to work on either the Pano or each individual frame.  So, iPad in hand, I used Sky Safari 5 Pro to trace out each visible constellation (tricky when thousands of stars are visible), picking out as many DSOs as I could locate as I moved along the image.  No doubt I missed one or two, but at final count there were 43 identified. 

    2053961635_MCandMWLabelled.thumb.jpg.7b13ad73f16824338378b56bb7ba67aa.jpg

    I hope SGL does not compress too much otherwise some of them may vanish from view.

    If you want a lost of everything I found, there is a table on the link:  http://alpha-lyrae.co.uk/2020/08/01/there-are-five-galaxies-visible-in-this-panorama/

    • Like 6
  8. I am quite pleased how this turned out as it is only my second attempt at a panorama, and I know I did not really level the tripod that well.

    Taken last year on holiday in Mozambique in mid-July around 4am local time, this is a 10-pane panorama using an unmodified Canon 70D, 14mm lens (22mm equivalent on the crop sensor) at f/2.8, ISO 3,200 and each exposure was 25 seconds.  Three of the galaxies are easy, one a little trickier, and one might need a closer look.

    The image was stiched using Microsoft ICE and then processed in Lightroom.

    1997235175_MCandMW-1Panorama.thumb.jpg.6f655f340192e0c18d1ab7c082da3b36.jpg

    • Like 19
  9. This might be the smallest one to appear in this thread, but it deserves to be here for one very good reason. The best coatings I have seen on anything, ever. Should that be not seen as if it were not for the small particles of dust, this thing is invisible. 
     

    The Takahashi 1.7x CQ module which turns the FS-60 in the f/10 quadruplet FS-60Q.

    C1B9F552-B229-4C69-A84A-0031BE41E688.thumb.jpeg.c17766a3228509e33e613aae083096ff.jpeg

    • Like 2
  10. Forgive the hyperbole, it was only 580mph but also 37,000 feet. 

    In late June 19, I took an overnight flight from London Heathrow to Johannesburg in South Africa for a two-week island vacation in Mozambique.  I had packed a small telescope and a widefield camera lens to take advantage of the Bortle Class 1 skies on the island, and fortunately had the equipment in the cabin with me.  After dinner the cabin lights were dimmed and most passengers it started to drift off to sleep, but not me.  I could not resist some stargazing out of the window.  At this point we were located somewhere over north Chad and it was rather dark and the view quite beautiful.  

    I grabbed my camera and a small tripod out of the overhead bin and managed to precariously balance the camera across my tray table and a narrow ledge under the window.  I had a choice of 3 windows with my seat but one was very dirty, another badly scratched, while the third was passable and would have to do.

    While the A380 is one of the smoothest planes I have flown on, there was a small amount of turbulence on this flight which limited exposures to 3 seconds.

     512473334_AircraftWindow.thumb.jpg.f552bdd5da428aa1719324074e9fab1e.jpg

    I used a Canon 70D (crop sensor) and 14mm Canon lens (22mm equivalent focal length), set to f/2.8 and ISO 6400.  I was able to focus the camera on Altair using 10x live view on the rear of the camera.   I set an intervalometer to the required timings, and then used the airline supplied blanket to shield the window from the cabin lights which were reflecting back towards the camera.  I could have done slightly better here as some light still crept in, and I think the red flashing light on the intervalometer also reflected on the window.  The best 10 images were stacked in DSS and processed in Lightroom.

    Considering passenger aircraft windows are not known for their optical quality, I am surprised by what could be captured.  Several DSOs are pretty obvious, in particular M2 and M27.

    1289351924_AircraftWindowConstelllationsStars.thumb.jpg.114d8698aba33b565012100961305fed.jpg

    I do very much wish I had been sitting on the other side of the aircraft, as about an hour later, the Sagittarius region of the Milky Way would have been coming into view.  Maybe next time…

     

    • Like 14
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