Flaming Star, Narrowband

[Stub Mandrel]

I didn't expect much last night, it took ages for the sky to clear, the moon was up and there was always thin cloud to take the edge of the images. Plus it was my first try with the Svbony 105 as a guide camera - although it worked well poor transparency and affected guiding, luckily not too critical with the 130P-DS being fairly short f/l.

Even so I am pleased with how the Flaming Star turned out in narrowband - no Oiii though, but the layer did make the blue stars come out blue! Just over an hour of 5 minute exposures for Ha and Sii, about 45 minutes for Oiii.

Always an odd one to process as there is so much faint Ha around there is barely any 'background' to use as a base.

[peter shah]

You are right there is very little O3 in 405... still its a great result as is