by owlice » Wed Dec 01, 2010 8:13 am
I have no information on these other than what is posted below. My hope is that the community can determine what is shown in these images.
First up, we have ...
Star Streams of NGC 4216
Urban Stiess writes: "In Ken Crawford's
high-resolution image of Nov 27, 2010 APOD "
Star Streams of NGC 4216," I spotted what appears as a ring nebula just to the west of NGC4206 [enhanced image attached]. As a purely amateur observer I have not been successful in locating further information on this object, the only clue contained within the GHOSTS website -
http://www-int.stsci.edu/~djrs/ghosts/n ... 9765a.html - and applying each of the two on-line filters. Not knowing the position of this object relative to 4206 I am unable to ascertain if in fact this is a ring nebula or merely the remnants of the cannibalization of another galaxy in close proximity. Have you access to further information? Has it previously been identified? "
![Crop from negative](./download/file.php?id=1398&sid=9ca062948593bac130b63625efd47833)
- Crop from negative
- crop.png (46.05 KiB) Viewed 1786 times
I can add: The ring shows up in the composite negative view, which I've cropped here. Mr. Stiess sent another image with arrows pointing to the ring structure which I'd be happy to attach if anyone requests it.
Second up, this...
Home from Above
____________________________________________________________________
Any ideas about/solutions to these mysteries?
I have no information on these other than what is posted below. My hope is that the community can determine what is shown in these images.
First up, we have ...
[size=120][b]Star Streams of NGC 4216[/b][/size]
[float=left][attachment=1]NGC4216_crawford and ring.jpg[/attachment][/float]Urban Stiess writes: "In Ken Crawford's [url=http://apod.nasa.gov/apod/image/1011/NGC4216_crawford.jpg]high-resolution image[/url] of Nov 27, 2010 APOD "[url=http://apod.nasa.gov/apod/ap101127.html]Star Streams of NGC 4216[/url]," I spotted what appears as a ring nebula just to the west of NGC4206 [enhanced image attached]. As a purely amateur observer I have not been successful in locating further information on this object, the only clue contained within the GHOSTS website - http://www-int.stsci.edu/~djrs/ghosts/ngc4206/ngc4206-9765a.html - and applying each of the two on-line filters. Not knowing the position of this object relative to 4206 I am unable to ascertain if in fact this is a ring nebula or merely the remnants of the cannibalization of another galaxy in close proximity. Have you access to further information? Has it previously been identified? "
[float=right][attachment=0]crop.png[/attachment][/float]I can add: The ring shows up in the composite negative view, which I've cropped here. Mr. Stiess sent another image with arrows pointing to the ring structure which I'd be happy to attach if anyone requests it.
[clear][/clear]
Second up, this...
[size=120][b]Home from Above[/b][/size]
[float=left]In the November 15 APOD "[url=http://apod.nasa.gov/apod/ap101127.html]Home from Above[/url]" discussion, I [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=25#p136728]posted a query[/url] about something that appears in the upper left window; a [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=25#p136730]few[/url] [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=25#p136741]others[/url] [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=25#p136753]also[/url] [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=50#p136788]wondered[/url] [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=75#p136819]what[/url] [url=http://asterisk.apod.com/viewtopic.php?f=9&t=22015&start=100#p136896]that[/url] "white plume," as one poster put it, is. On the left, a crop from the image shown on APOD and on the right, one from the [url=http://apod.nasa.gov/apod/image/1011/cupolaview_iss14_big.jpg]larger image[/url]:[/float]
[img]http://asterisk.apod.com/download/file.php?id=1336[/img][float=right][img]http://asterisk.apod.com/download/file.php?id=1335[/img][/float]
[clear][/clear]
____________________________________________________________________
Any ideas about/solutions to these mysteries?