Giant prominence
Taken by Maximilian Teodorescu on September 11, 2016 @ Magurele, Romania
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Date Taken: 2016:09:11 18:02:12
  
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In the last couple of days a large filaprom is observable at the solar limb. Today it showed its true height, in the form of a large and luminous prominence. 4.5inch F/7 APO Refractor, Quark chromosphere, ASI 174MM.
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Comments
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you have a perfect quark! i have seen dozens of them with faulty crystals in them. take extra good care of this one , it is clearly a diamond amongst mica!
Posted by amplelight 2016-09-11 13:22:30
Well its not entirely true what you say about the Quark, unfortunately. It does show a lot of on band/off band or slight contrast regions in the entire field of view of my camera (ASI174MM), but this is obvious when doing inside-disc images. On the limb it is much less obvious, plus Ive started to pay special attention to flats. I was almost going to send it back at first, due to these contrast differences. Now Ive learned how to deal with them and the filter will stay with me. I sincerely didnt expect this obvious fault from such an expensive device. But...the truly good H-alpha filters are indeed so much more expensive.
Posted by MaximilianT 2016-09-12 09:23:33
 
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