Celestial hemisphere:  Northern  ·  Constellation: Delphinus (Del)  ·  Contains:  Blue Flash Nebula  ·  NGC 6905
NGC6905 Blue Flash PN, Riedl Rudolf
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NGC6905 Blue Flash PN

NGC6905 Blue Flash PN, Riedl Rudolf
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NGC6905 Blue Flash PN

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Description

NGC 6905is a small PN in the constellation Dolphin. The diameter is about 1,2 arcmin. The distance is 9.000 Lj.
My friend Jerry Yesavage  postet a picture recently which raised my interest for this lovely PN! his picture can be found here: 

I disassembled last week my C11, because the focusing device became loose. I used the opportunity to clean and readjust my scope.
Yesterday I  made the finetuning in collimation at excellent seeing. At a magnification of 560x the airy disc was almost 100 % stable. I could get the 1st diffraction ring perfectly placed aroung the airiy disc. It was extremly humid but absolut quiet air!
I am really happy with the optical performance of my C11.
I used the good conditions to go for this fine PN.

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    NGC6905 Blue Flash PN, Riedl Rudolf
    Original
  • Final
    NGC6905 Blue Flash PN, Riedl Rudolf
    B

B

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NGC6905 Blue Flash PN, Riedl Rudolf