Hi Everyone; I has been a while since my last post but I have kept busy working on images of all of the Messier images. In the meantime, I was able to get three images of Comet Pojmanski this past week. Each image is taken with a different camera with a different FOV. I have posted the images in my "Recent Images" album which can be found at: http://www.edsgalaxy.com Just click on the first image (M45) to open the "Recent Images" album to see the images of the Comet. I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. Ed Lunt __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
--- Edward Lunt <lunco@yahoo.com> wrote: <snip>
In the meantime, I was able to get three images of Comet Pojmanski this past week. Each image is taken with a different camera with a different FOV. <snip> Outstanding pics, Ed.
I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. That _is_ weird. I'd ship them off to APOD.
I has been a while since my last post but I have kept busy working on images of all of the Messier images. From the rest of your album, it looks like you are having a good-ol-time with those Ha and S filters. Approx. how much did they set you back? - Canopus56
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All my images are remotely over the Internet at the RAS observatory located in Cloudcroft New Mexico. I rent time on one of several telescopes and so I don't know what the individual filters would cost. I personally find that this approach to imaging is extremely convenient and cost effective (there is no way in the world could I afford the kind of equipment I am able to rent along with the time savings of having it permanently set up in an observatory), but I also realize that I do sacrifice the "experience" of imaging with my own equipment. The one off-set is that I do use my own equipment for viewing and so I am able to conveniently separate viewing from imaging and for me it works extremely well. --- Canopus56 <canopus56@yahoo.com> wrote:
--- Edward Lunt <lunco@yahoo.com> wrote: <snip>
In the meantime, I was able to get three images of Comet Pojmanski this past week. Each image is taken with a different camera with a different FOV. <snip> Outstanding pics, Ed.
I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. That _is_ weird. I'd ship them off to APOD.
I has been a while since my last post but I have kept busy working on images of all of the Messier images. From the rest of your album, it looks like you are having a good-ol-time with those Ha and S filters. Approx. how much did they set you back? - Canopus56
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To each his own, Edward. However a person best enjoys astronomy is just great with me, whether through an Internet connect, reading a book, binos or telescope. I know there's been a lot of criticism about people like me with go-to 'scopes. But as a guy who has far less time for astronomy than he'd like, and who is somewhat dyslexic anyway (so I have a lot of trouble fining my way around the heavens or even around cities, sometimes), a go-to allows me to enjoy a hobby I otherwise could not have. Best wishes, Joe
Joe, well said. BTW, these telescopes have been used to discover over 100 astroids and over 1,000 variable stars during the past two years. --- Joe Bauman <bau@desnews.com> wrote:
To each his own, Edward. However a person best enjoys astronomy is just great with me, whether through an Internet connect, reading a book, binos or telescope. I know there's been a lot of criticism about people like me with go-to 'scopes. But as a guy who has far less time for astronomy than he'd like, and who is somewhat dyslexic anyway (so I have a lot of trouble fining my way around the heavens or even around cities, sometimes), a go-to allows me to enjoy a hobby I otherwise could not have. Best wishes, Joe
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--- Edward Lunt <lunco@yahoo.com> wrote:
Hi Everyone; I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. Ed Lunt
That's because you were tracking on the stars and the comet moved during your exposure. It's a problem with photographing fast moving comets like this one; either you track on the stars and the comet is elongated or you track on the comet head and the stars trail. Some of the photos you see on the internet are made by tracking on the head then removing the image of the comet from the trailed images of the stars, processing the stars so that they are not trailed, and them pasting the comet image back on top of them. Nice photos anyway. DT __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
The elongation looks to be 90 degrees to it's direction of travel based on the position of the tail in the second photo... So I don't know. Quoting daniel turner <outwest112@yahoo.com>:
--- Edward Lunt <lunco@yahoo.com> wrote:
Hi Everyone; I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. Ed Lunt
That's because you were tracking on the stars and the comet moved during your exposure.
It's a problem with photographing fast moving comets like this one; either you track on the stars and the comet is elongated or you track on the comet head and the stars trail.
Some of the photos you see on the internet are made by tracking on the head then removing the image of the comet from the trailed images of the stars, processing the stars so that they are not trailed, and them pasting the comet image back on top of them.
Nice photos anyway.
DT
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--- diveboss@xmission.com wrote:
The elongation looks to be 90 degrees to it's direction of travel based on the position of the tail in the second photo... So I don't know.
I guess the solar wind that makes the ion tail is much faster than the motion of the comet itself. http://home.att.net/~dpersyk/new.htm Here is a photo taken the other way, tracking on the comet head instead of the stars. Notice that the hammerhead look is gone from the comet but the stars are all stretched out. It looks to me like the comet is moving north slowly and a strong wind from the east is blowing the tail to the west. DT DT __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com
Yup, she's flying sideways... Actually, that negative image looks pretty cool. ;) Quoting daniel turner <outwest112@yahoo.com>:
--- diveboss@xmission.com wrote:
The elongation looks to be 90 degrees to it's direction of travel based on the position of the tail in the second photo... So I don't know.
I guess the solar wind that makes the ion tail is much faster than the motion of the comet itself.
http://home.att.net/~dpersyk/new.htm
Here is a photo taken the other way, tracking on the comet head instead of the stars. Notice that the hammerhead look is gone from the comet but the stars are all stretched out. It looks to me like the comet is moving north slowly and a strong wind from the east is blowing the tail to the west.
DT DT
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Thanks Daniel. --- daniel turner <outwest112@yahoo.com> wrote:
--- Edward Lunt <lunco@yahoo.com> wrote:
Hi Everyone; I was suprised that in the close-up of the head of the comet (the third image) the core is not round but is in the shape of a "bar". Most interesting. Ed Lunt
That's because you were tracking on the stars and the comet moved during your exposure.
It's a problem with photographing fast moving comets like this one; either you track on the stars and the comet is elongated or you track on the comet head and the stars trail.
Some of the photos you see on the internet are made by tracking on the head then removing the image of the comet from the trailed images of the stars, processing the stars so that they are not trailed, and them pasting the comet image back on top of them.
Nice photos anyway.
DT
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participants (5)
-
Canopus56 -
daniel turner -
diveboss＠xmission.com -
Edward Lunt -
Joe Bauman