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#1
October 27th 10, 07:30 PM
posted to alt.binaries.pictures.astro
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ASTRO: NGC 281 with ED120
Recently I used a moonlit city night with rather bad transparency for some
images of NGC 281. Main goal of the night was to see how good stars looked at the edge of the field in my Skywatcher ED120 without the focal reducer/flattener. Actually stars looked quite decent and I have cropped away the parts that don't... The image was combined to a Ha/Ha:OIII:OIII. Taken from the middle of Berlin with a Skywatcher ED120 without reducer (900mm focal length) on a H-EQ5 Synscan mount, Atik 383 L+ camera, 8x20 minutes Halpha, 5x20 minutes OIII. http://ccd-astronomy.de/temp4/281coloursmallgut.jpg Stefan 
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#2
October 27th 10, 11:47 PM
posted to alt.binaries.pictures.astro
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ASTRO: NGC 281 with ED120
On 10/27/2010 1:30 PM, Stefan Lilge wrote:
Recently I used a moonlit city night with rather bad transparency for some images of NGC 281. Main goal of the night was to see how good stars looked at the edge of the field in my Skywatcher ED120 without the focal reducer/flattener. Actually stars looked quite decent and I have cropped away the parts that don't... The image was combined to a Ha/Ha:OIII:OIII. Taken from the middle of Berlin with a Skywatcher ED120 without reducer (900mm focal length) on a H-EQ5 Synscan mount, Atik 383 L+ camera, 8x20 minutes Halpha, 5x20 minutes OIII. http://ccd-astronomy.de/temp4/281coloursmallgut.jpg Stefan I didn't remember you had that scope. This one came out very well. I tried this early in my digital life. I need to revisit it though my FOV can't quite fit it all in. Your two color color is better than my HaRGB but back then I didn't know much about such combines. Color frames were weak compared to HA so it came out pretty pale. 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".
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#3
October 28th 10, 05:41 AM
posted to alt.binaries.pictures.astro
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ASTRO: NGC 281 with ED120
Very nice, Stefan. I tried to image that object a few weeks ago, but they
didn't come out very well. I've since had shoulder surgery, so I'm out of commission for a while, unfortunately. As always, it amazes me the detail you obtain in Berlin's light dome. Well done. George "Stefan Lilge" wrote in message senet.com... Recently I used a moonlit city night with rather bad transparency for some images of NGC 281. Main goal of the night was to see how good stars looked at the edge of the field in my Skywatcher ED120 without the focal reducer/flattener. Actually stars looked quite decent and I have cropped away the parts that don't... The image was combined to a Ha/Ha:OIII:OIII. Taken from the middle of Berlin with a Skywatcher ED120 without reducer (900mm focal length) on a H-EQ5 Synscan mount, Atik 383 L+ camera, 8x20 minutes Halpha, 5x20 minutes OIII. http://ccd-astronomy.de/temp4/281coloursmallgut.jpg Stefan
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#4
October 29th 10, 04:52 PM
posted to alt.binaries.pictures.astro
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ASTRO: NGC 281 with ED120
perhaps the best renered NGC 281 I've seen.
On Wed, 27 Oct 2010 20:30:04 +0200, "Stefan Lilge" wrote: Recently I used a moonlit city night with rather bad transparency for some images of NGC 281. Main goal of the night was to see how good stars looked at the edge of the field in my Skywatcher ED120 without the focal reducer/flattener. Actually stars looked quite decent and I have cropped away the parts that don't... The image was combined to a Ha/Ha:OIII:OIII. Taken from the middle of Berlin with a Skywatcher ED120 without reducer (900mm focal length) on a H-EQ5 Synscan mount, Atik 383 L+ camera, 8x20 minutes Halpha, 5x20 minutes OIII. http://ccd-astronomy.de/temp4/281coloursmallgut.jpg Stefan
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#5
October 31st 10, 09:45 PM
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Quote:
I still wonder about how it all went with the shutter issue on your atik 383. I'm having exactly the same problem Morten
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#6
November 2nd 10, 07:21 PM
posted to alt.binaries.pictures.astro
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ASTRO: NGC 281 with ED120
Hi guys, thanks for the comments.
I still wonder about how it all went with the shutter issue on your atik 383. I'm having exactly the same problem That's what I didn't want to hear. I was hoping that I was the only one with this problem and that I would be safe from similar defects in the future... My camera was exchanged for a new one. So far all is going well. But I still have a bad feeling when the shutter has to do a lot of work, e.g. during focusing. Stefan "Morten" schrieb im Newsbeitrag ... Stefan Lilge;1117298 Wrote: Recently I used a moonlit city night with rather bad transparency for some images of NGC 281. Main goal of the night was to see how good stars looked at the edge of the field in my Skywatcher ED120 without the focal reducer/flattener. Actually stars looked quite decent and I have cropped away the parts that don't... The image was combined to a Ha/Ha:OIII:OIII. Taken from the middle of Berlin with a Skywatcher ED120 without reducer (900mm focal length) on a H-EQ5 Synscan mount, Atik 383 L+ camera, 8x20 minutes Halpha, 5x20 minutes OIII. http://ccd-astronomy.de/temp4/281coloursmallgut.jpg Stefan Great shot. I still wonder about how it all went with the shutter issue on your atik 383. I'm having exactly the same problem Morten -- Morten
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