CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
Here is a coloured rendition of the bipolar emission nebula (NGC6164-5), as requested. More colour data was gathered in the course of two separate nights with the most recent being last night. The object is fairly low in the sky and it was time-limited before the object gradually 'faded' into the horizon light pollution dome and set. It does somehow look like an egg too!
The image is a work-in-progress. Will hope to get still more data to improve the SNR profile.
it looks fine on three of my monitors (one CRT, two LCDs). How does and RGB composite results in higher saturation and an LRGB composite results in lower saturation? I always thought saturation is a mutually exclusive trait.
Oh, I am not sure but I read Robert Gendler's website, he said if you use H alpha as L (now i remember this pic is not taken with H alpha, oops), then the saturation will be naturally low. Oops my misunderstanding, hehe.
there is h-alpha data in this object since it is emissive (about 160 minutes). i did not take L at this point in time, because being low in the horizon, it is susceptible to severe light pollution gradients at the same time. By 9PM, it is already almost setting. I would like to take the L to improve definition, but that would probably need to wait to next year. this is indeed a challenging object to take, and demands a lot of exposures and transparency of the sky must be good to bring out the textures in the nebula and its environment.
Here is a reference to this image taken by Gemini South.
When is your Andromeda Mosaic going to be carried out?
soon soon...
starfinder wrote: I can also see what looks like a half bubble at the 2 o'clock position. Looks like it originated from the same source?
It is actually part of the greater NGC6188 complex in Norma-Ara region. There are really lots of things there to catch, when armed with a h-alpha filter. Unfortunately, this region would end soon (set), perhaps a comeback again next year.
