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ASTRO: NGC2267 Halpha
Hi all,
the sun is back, clouds are gone. This night i shot for the first time ngc2237 in Halpha as the moon was full, to increase my fov i used a meade fd3.3 reducer, the results are quite good with such a reducer except on the borders were stars are elongated, it seems to be a solution for wide field with my setup. 8" SCT Meade + Sbig ST2000 + VIXEN SPDX + skysensor 2000PC 9 X 20 min autoguiding with 60 mm refractor and starlight guider cam Patrice Boyer |
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ASTRO: NGC2267 Halpha
Patrice, this is one great image! whow.
I also own a f/3.3 reducer but untill i saw your image i wasn't sure if i would ever use it.. But this image did it for me i will use it. reg Dirk -- Dirk van den Herik A journey of thousand lightyears starts with the first step. "Patrice Boyer" wrote in message ... Hi all, the sun is back, clouds are gone. This night i shot for the first time ngc2237 in Halpha as the moon was full, to increase my fov i used a meade fd3.3 reducer, the results are quite good with such a reducer except on the borders were stars are elongated, it seems to be a solution for wide field with my setup. 8" SCT Meade + Sbig ST2000 + VIXEN SPDX + skysensor 2000PC 9 X 20 min autoguiding with 60 mm refractor and starlight guider cam Patrice Boyer |
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ASTRO: NGC2267 Halpha
"Patrice Boyer" wrote Wonderful image with lots of interesting detail Patrice! George N |
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ASTRO: NGC2267 Halpha
Thanks George,
but i think the Halpha version BW is a bit overprocesed and so too noisy, i reprocessed it with the same details but less noisy and aggressive, i shot also some rgb data to add to th color pic as the moon came later annoying me yesterday, i have much less green background to remove and also the vignetting (awful with th f3.3 reducer) was minimized. "George Normandin" a écrit dans le message de ... "Patrice Boyer" wrote Wonderful image with lots of interesting detail Patrice! George N |
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ASTRO: NGC2267 Halpha
Hi Dirk, Thanks a lot,
i was also surprised by the result, in fact you can use it safely with Ha filter but without the vignetting is extremly important, that's what i experimented with my astrodon RGB filters, these are also not parfocal with the use of the reducer, you should use very good flat to achieve good final result. Patrice "DvandenH" a écrit dans le message de bel.net... Patrice, this is one great image! whow. I also own a f/3.3 reducer but untill i saw your image i wasn't sure if i would ever use it.. But this image did it for me i will use it. reg Dirk |
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