Crescent Nebula in HaOIIIOIII

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Crescent Nebula in HaOIIIOIII

Postby gordon_haynes » Fri Jun 19, 2009 2:06 pm

Hi All
I previously (yesterday) posted a Ha image of this subject and was intending to add some OIII data to it, well the sky cleared after a rain shower last night so I go set up and managed to get 20x10 minutes for OIII, using the Takahshi BRC-250 and Starlight Xpress H9 as before and guided with the M8C. The seeing was very poor and it never got as dark as the night before so tere is not as much detail and sharpness as I was hoping but I am pleased with the result especially as the bluish halo associated with this subject is clearly evident. You can compare it with the HA version on my website [url=][u][color=#800080][/color][/u][/url] in the Nebulae 2 section of the image gallery. Again no callibration with darks, flats or bias frames was used
Thanks for looking
Best wishes

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RE: Crescent Nebula in HaOIIIOIII

Postby paulc » Fri Jun 19, 2009 6:16 pm

Lovely whispy result Gordon.
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