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ASTRO: NGC 4449
NGC 4449 is a popular spring galaxy because of it's irregular structure. I
wanted to do an allnighter on it in April new moon time, but decided after a bit more than two hours that I had enough signal and rather do some colour frames instead of more luminance. Colour data is still waiting to be processed. Conditions were very good by city standards, especially the seeing was amazingly good. Even the raw stacked images looked sharper than most of my images after sharpening. Any fuzziness left comes from the very strong logarithmic stretch I did to show the fainter parts better. Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9 camera, 25x5 minutes. The picture can also be found at http://ccd-astronomy.de/temp/4449-25x5gut.jpg Stefan |
#2
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ASTRO: NGC 4449
Nice images Stefan, the color version of m51 shows good color and details!
reg Dirk -- Dirk van den Herik A journey of thousand lightyears starts with the first step. "Stefan Lilge" wrote in message ... NGC 4449 is a popular spring galaxy because of it's irregular structure. I wanted to do an allnighter on it in April new moon time, but decided after a bit more than two hours that I had enough signal and rather do some colour frames instead of more luminance. Colour data is still waiting to be processed. Conditions were very good by city standards, especially the seeing was amazingly good. Even the raw stacked images looked sharper than most of my images after sharpening. Any fuzziness left comes from the very strong logarithmic stretch I did to show the fainter parts better. Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9 camera, 25x5 minutes. The picture can also be found at http://ccd-astronomy.de/temp/4449-25x5gut.jpg Stefan |
#3
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ASTRO: NGC 4449
Stefan Lilge wrote: NGC 4449 is a popular spring galaxy because of it's irregular structure. I wanted to do an allnighter on it in April new moon time, but decided after a bit more than two hours that I had enough signal and rather do some colour frames instead of more luminance. Colour data is still waiting to be processed. Conditions were very good by city standards, especially the seeing was amazingly good. Even the raw stacked images looked sharper than most of my images after sharpening. Any fuzziness left comes from the very strong logarithmic stretch I did to show the fainter parts better. Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9 camera, 25x5 minutes. The picture can also be found at http://ccd-astronomy.de/temp/4449-25x5gut.jpg Stefan ------------------------------------------------------------------------ That's one on my list but will have to wait for next year now. Too far west for good imaging as it is getting lower as the night goes on. I doubt I'd ever see your seeing either! That makes the shot really nice! Can't wait for the color version. I doubt I'd be able to handle color in light polluted skies of Berlin or even a much smaller town. I have problems with the moon! Rick -- Correct domain name is arvig and it is net not com. Prefix is correct. Third character is a zero rather than a capital "Oh". |
#4
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ASTRO: NGC 4449
very nice core detail. lots of HII in that one
"Stefan Lilge" wrote in message ... NGC 4449 is a popular spring galaxy because of it's irregular structure. I wanted to do an allnighter on it in April new moon time, but decided after a bit more than two hours that I had enough signal and rather do some colour frames instead of more luminance. Colour data is still waiting to be processed. Conditions were very good by city standards, especially the seeing was amazingly good. Even the raw stacked images looked sharper than most of my images after sharpening. Any fuzziness left comes from the very strong logarithmic stretch I did to show the fainter parts better. Taken from the middle of Berlin with an 8" SCT at f/6.5, G11 mount, SXV-H9 camera, 25x5 minutes. The picture can also be found at http://ccd-astronomy.de/temp/4449-25x5gut.jpg Stefan |
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