http://www.skythisweek.com/2007/05/29/messier-57-the-ring-nebula/ Occasional observations of an amateur astronomer Sat, 20 Nov 2010 23:14:54 +0000 http://wordpress.org/?v=2.9.2 hourly 1 http://www.skythisweek.com/2007/05/29/messier-57-the-ring-nebula/comment-page-1/#comment-599 Andrew Tue, 29 May 2007 23:45:05 +0000 http://www.raben.com/weblog/2007/05/29/messier-57-the-ring-nebula/#comment-599 I'm looking forward to seeing them! I’m looking forward to seeing them!

]]> http://www.skythisweek.com/2007/05/29/messier-57-the-ring-nebula/comment-page-1/#comment-602 Vern Tue, 29 May 2007 22:28:14 +0000 http://www.raben.com/weblog/2007/05/29/messier-57-the-ring-nebula/#comment-602 I was surprised that a 25 second exposure would bring out much detail at all. Not surprisingly, the outer shell is missing and the nearby galaxy IC 1296 doesn't show either. See <a href="http://www.longmontastro.org/albers/las/kimball/M57_Deep.jpg" rel="nofollow">Brian Kimball's deep M57 shot</a>. This was mostly experiment to see how deep I could get in 30 seconds or less with the Canon Xti and Nexstar11 at f6.3. Apparently the answer is around mag 15. That is nice since no guiding is needed. The mounts PEC errors can be mostly removed by deleting a few frames. I may have to a few more... I was surprised that a 25 second exposure would bring out much detail at all. Not surprisingly, the outer shell is missing and the nearby galaxy IC 1296 doesn’t show either. See Brian Kimball’s deep M57 shot. This was mostly experiment to see how deep I could get in 30 seconds or less with the Canon Xti and Nexstar11 at f6.3. Apparently the answer is around mag 15. That is nice since no guiding is needed. The mounts PEC errors can be mostly removed by deleting a few frames. I may have to a few more…

]]> http://www.skythisweek.com/2007/05/29/messier-57-the-ring-nebula/comment-page-1/#comment-601 Andrew Tue, 29 May 2007 21:39:10 +0000 http://www.raben.com/weblog/2007/05/29/messier-57-the-ring-nebula/#comment-601 WOW!.I am absolutely stunned.Perhaps one of the most beautiful I have ever seen!!.Good job! WOW!.I am absolutely stunned.Perhaps one of the most beautiful I have ever seen!!.Good job!

]]> http://www.skythisweek.com/2007/05/29/messier-57-the-ring-nebula/comment-page-1/#comment-600 Astrolink [Global Edition] » Astrosphere for May 29, 2007 | Latest astronomy news in 11 languages Tue, 29 May 2007 17:05:59 +0000 http://www.raben.com/weblog/2007/05/29/messier-57-the-ring-nebula/#comment-600 [...] finally, here’s a nice picture of the M57, the Ring Nebula, one of my favourite telescope targets. Thanks to Vern’s [...] [...] finally, here’s a nice picture of the M57, the Ring Nebula, one of my favourite telescope targets. Thanks to Vern’s [...]

]]>