[HN Gopher] Time lapse of this week's large sunspot
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       Time lapse of this week's large sunspot
        
       Author : gattr
       Score  : 18 points
       Date   : 2023-06-30 21:36 UTC (1 hours ago)
        
 (HTM) web link (www.astrobin.com)
 (TXT) w3m dump (www.astrobin.com)
        
       | jcims wrote:
       | Astrobin is an amazing resource. Like Flickr for astronomers
       | 
       | https://www.astrobin.com/search/?d=i
       | 
       | It's amazing what some people are able to do with relatively
       | modest (and not-so-modest) equipment.
        
       | helij wrote:
       | This one was visible with naked eyes using appropriate white
       | light filters.
        
       | xnx wrote:
       | The heavy smoke in the Midwest made it easily viewable through
       | phone camera zoom.
        
       | gattr wrote:
       | Captured with a 180 mm diameter telescope. The animation spans 20
       | minutes, with 20-second intervals between frames.
       | 
       | edit:
       | 
       | Also available as a smaller-sized H264 MP4 [1].
       | 
       | [1]
       | https://www.cloudynights.com/gallery/image/182808-ar-3354-an...
        
         | jcims wrote:
         | Nicely done! Any idea what the field of view is?
        
           | gattr wrote:
           | Thanks! The horizontal FOV is around 5 arcminutes. The
           | granules (the bright convection cells comprising most of the
           | image around the sunspots) are about 1000 km across on
           | average.
        
             | jcims wrote:
             | That's wild!
        
         | thghtihadanacct wrote:
         | Nice. Now this is quality content. GJ
        
         | dylan604 wrote:
         | I have long decided that my next major astro purchase would be
         | for solar observation, so I'm very jelly!!
         | 
         | The closest I've gotten is being a little hacker and written a
         | wget script to download from SOHO, but I feel like that's
         | cheating compared to you ;-)
        
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       (page generated 2023-06-30 23:00 UTC)