Comet 67P/Churymov-Geriasmenko + asteroid
Nov 23, 2015 12:02:25 #
I was successful in obtaining a weak but discernable image of the comet that the Rosetta satellite is in orbit around and was in the news recently when it successfully deployed a lander on the comet. Unfortunately the lander's anchoring system failed and the lander bounced into a shadow filled area where it's solar panels could not be recharged.
This is a negative print to make the comet and it's upward pointing tail more easily visible. The comet itself is the short fuzzy streak. Notice also a short streak at top of image which is a minor planet or aka asteroid, (I have not checked on it's identity) Both comet and asteroid moved during the 15 minute exposure and hence the streaks. Telescope was a Meade 14 inch LX200 operating at f/6.3 with a Canon 60Da camera, exposure 15 minutes, 30 second subs, ISO 6400. Image stacked in DeepSkyStacker, processed Photoshop Elements 9.
This is a negative print to make the comet and it's upward pointing tail more easily visible. The comet itself is the short fuzzy streak. Notice also a short streak at top of image which is a minor planet or aka asteroid, (I have not checked on it's identity) Both comet and asteroid moved during the 15 minute exposure and hence the streaks. Telescope was a Meade 14 inch LX200 operating at f/6.3 with a Canon 60Da camera, exposure 15 minutes, 30 second subs, ISO 6400. Image stacked in DeepSkyStacker, processed Photoshop Elements 9.
Nov 23, 2015 12:10:30 #
Nov 23, 2015 12:22:23 #
Nov 23, 2015 14:04:07 #
Nov 23, 2015 14:04:37 #
SonnyE wrote:
Wow, Jerry!
What a catch!
:thumbup: :thumbup: :thumbup:
What a catch!
:thumbup: :thumbup: :thumbup:
Thank you as always, Sonny
Nov 23, 2015 15:58:14 #
Would you happen to know the magnitude of the two stars below the comet? Curious as to how deep your lottery light bucket can go.
Amazing image! Thanks!
Amazing image! Thanks!
Nov 24, 2015 02:12:49 #
skylane5sp wrote:
Would you happen to know the magnitude of the two stars below the comet? Curious as to how deep your lottery light bucket can go.
Amazing image! Thanks!
Amazing image! Thanks!
I do not know the magnitudes of those particular stars, but I did check some areas with photometric data and the 14 inch will get to magnitude 20 in one hour using the Canon 60Da. On older data with the 14 it was reaching magnitude 19.5 in a 90 second exposure using an SBIG ST1001 CCD camera. The difference being is that the CCD had 25 micron pixels while the Canon 60 Da has 4.3 micron pixels. In other words the CCD camera was a big light bucket and could gather more photons per pixel area than the Canon. That's good for going very, very faint but falls short in the resolution category.
Nov 24, 2015 09:06:25 #
I knew you were going to catch some nice things with that big beast.
Well done.
:thumbup: :thumbup:
Well done.
:thumbup: :thumbup:
Nov 24, 2015 11:32:16 #
Light Bucket....
Big Beast....
:lol: :lol: :lol: :lol: :lol:
I'm just happy to get to see what Jerry can do with his giant telescope. :mrgreen: ;) :-D
Big Beast....
:lol: :lol: :lol: :lol: :lol:
I'm just happy to get to see what Jerry can do with his giant telescope. :mrgreen: ;) :-D
Nov 24, 2015 12:19:37 #
As always Jerry I'm in ah of your work.
I can imagine the work that went into setting up the location & tracking of these objects.
Craig
I can imagine the work that went into setting up the location & tracking of these objects.
Craig
Nov 24, 2015 12:36:16 #
Algol wrote:
I was successful in obtaining a weak but discernab... (show quote)
WOW!!!
Just imagine how Galileo would have liked to have that scope and camera! And to think what he accomplished with what he had. Its my understanding that his telescope was inferior to just about the cheapest toy telescope you could possibly find. I remember getting a cheap telescope that I ordered from a cereal box when I was 8. It was a real cheap scope made of two tubes if which you moved the into or out of the fatter tube to focus. And of course, as an 8 year old, I liked taking it apart and putting back together. I am guessing that the simple objective was about 1 inch in diameter. But it was surprisingly a clear image when I looked through it. I suspect that scope was better than what Galileo used with his homemade ground lenses.
Nov 26, 2015 16:15:21 #
Here is interesting link that I found with someone using a Sony A7S with a Tek Epsilon 180 scope. The camera had been modded and this was 4 frames per second at an ISO of 160K.
https://drive.google.com/file/d/0B3Ky5pyZvsINMGZwS0ktVGFONUE/view?usp=sharing
https://drive.google.com/file/d/0B3Ky5pyZvsINMGZwS0ktVGFONUE/view?usp=sharing
Nov 26, 2015 20:53:31 #
JimH123 wrote:
Here is interesting link that I found with someone using a Sony A7S with a Tek Epsilon 180 scope. The camera had been modded and this was 4 frames per second at an ISO of 160K.
https://drive.google.com/file/d/0B3Ky5pyZvsINMGZwS0ktVGFONUE/view?usp=sharing
https://drive.google.com/file/d/0B3Ky5pyZvsINMGZwS0ktVGFONUE/view?usp=sharing
Here is a link to the telescope used for the above video:
http://www.astropixels.com/bifrost/tak_e180.html
And this page to see the results of all 110 deep sky objects in the Messier Catalog as done by the above mentioned telescope.
http://www.astropixels.com/messier/messiergallery.html
Nov 28, 2015 06:27:47 #
Algol wrote:
I was successful in obtaining a weak but discernab... (show quote)
I ran a check with Minor Planet Checker and found out that the asteroid is (757) Portlandia at magnitude 15.1, it is a main belt asteroid and has a diameter of 32 km.
Nov 28, 2015 12:19:36 #
Algol wrote:
I ran a check with Minor Planet Checker and found out that the asteroid is (757) Portlandia at magnitude 15.1, it is a main belt asteroid and has a diameter of 32 km.
Outstanding. Glad you could identify it.
If you want to reply, then register here. Registration is free and your account is created instantly, so you can post right away.