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 Ha-RGB attempt of one of the finest HII regions in the sky - the Rosette Nebula, also the first image taken this year after couple of months of break. This also happens to be the first image captured with the E210 astrograph being mounted on the pmx. The second image below shows the inner core region displaying the NGC2244 star cluster as while as popular dark twisted filaments of dust common in this nebula.
Rosette Nebula in Monoceros
Close-up view of the dark filaments of dust and NGC2244 open cluster within
Last edited by rcj on Sat Mar 30, 2013 2:37 pm, edited 1 time in total.
Ya Remus, you're putting NASA out of business! Better still, no need for the James Webb Space Telescope. The HST's replacement is here in Sg... errr.... Mersing!
Amazing depth of detail, esp the dark nebulae. And the nebulosity has such texture and the stars are so pin-point that it feels like I'm watching it from a nearby spaceship.
Are those tiny tadpole-like dark patches Bok globules?
Thanks Weixing, Gavin, Mariner (i still don't know your name), and Kochu for your comments. Glad you'd enjoyed the image.
Pertaining to Gavin's question, yes, they are Bok globules. What is interesting in these filament structures, they are thought to be molded in this form due to the orchestration of a variety of elements - of stellar winds, radiation, as well as electromagnetic forces. I have read that these resulting force elements produce a double helix lining up along a magnetic field pointing towards the central NGC2244 cluster, which contains young hot OB stars. As such, they could be shaped in the way they are.
In terms of data capture, this was taken on the second night where the transparency was not as good as the previous night, and there were many passing low cumulus clouds. Would have been possible to gather more data, hopefully more for blue side, since this nebula is not really predominantly red, and influenced by the reflective nature of the OB central stars in NGC2244. But this thing is faint. I have yet to really see the nebula of the Rosette directly.
Nice...thanks for sharing, Remus. Excellent as usual!
Gavin, did we check out this nebula? I don't remember we did...and you were so enthusiastic about looking at nebula too!
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