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View Full Version here: : Comet Lemmon, tail still disrupted.


tilbrook@rbe.ne
09-02-2013, 02:17 AM
Hi,

Here's my image for tonight, 08/02/2013.

Comet Lemmon's tail is still disrupted, fascinating following it's changing shape.

I used the 8" astrograph to get a little fainter, and I used some minimum pass filter in PS to make the tail stand out more.

Cheers,

Justin.

Astroman
09-02-2013, 07:52 AM
Nice shot Justin, what were your camera settings? Exposure settings etc...

tilbrook@rbe.ne
09-02-2013, 08:07 AM
Thanks Andrew!

Sorry forgot that.

ISO 1600 - 10 x 150 sec subs.

8" astrograph - Heq Pro 5 mount - baader coma corractor - unmodded canon 1100D - cooler box.

Stacked in DSS median - stars and comets - processed in PS7.

Also just updated the image.

Cheers,

Justin

orestis
09-02-2013, 08:22 AM
Stunning image Justin,

Great composition too, the 2 stars near the coma add a nice reference.

Seems like the 8'' does a better job at picking up that faint tail.

I can definately still see that knot like concentration. I wonder if this has been observed visually, its probably far too faint though.

Your gathering a very nice collection of images even before the comet has reached full brightness, I am eagerly awaiting your next set of images.

Cheers
Orestis:thumbsup:

tilbrook@rbe.ne
09-02-2013, 09:35 AM
Thanks Orestis!

Might have a try with the 16" visually tonight, should have reasonable chance.

Cheers,

Justin.

gregbradley
09-02-2013, 11:14 AM
Great shot.

Comets often have 2 tails. One is the water vapour/carbon dioxide trail the other an ion trail which blows from the solar wind which may be at a different angle to the tractory of the comet.

Greg.

Astroman
09-02-2013, 11:35 AM
Thanks for the info Justin. I noticed you have little egg stars also, must be difficult tracking near the pole.

tilbrook@rbe.ne
09-02-2013, 12:25 PM
Thanks Greg!

Thanks for the answer too.



Yep, a but of a bugger around the pole!

Didn't have time to use the auto guider on this one, unexpected guests turned up. I used it on the previous image with the ED80 and it worked well. Needed to aquire on achenar, then swing back the comet.

Cheers,

Justin.

allan gould
09-02-2013, 01:58 PM
Great image, Justin. At what time did you manage to get this?

tilbrook@rbe.ne
09-02-2013, 02:35 PM
Thanks Allan!

Between 22.17 to 22.43 08/02/2013.

Cheers,

Justin.

Phil Hart
09-02-2013, 04:03 PM
Nice image Justin :thumbsup:. The stars and comet alignment option in DSS appears to have worked well for you in this case.

Phil

elfinke
09-02-2013, 07:23 PM
Gosh that's an amazing image. Well done!

tilbrook@rbe.ne
09-02-2013, 07:53 PM
Thanks Phil!

Yep, happy I've been able to use DSS properly.



Thanks Elfinke!

Cheers,

Justin.

h0ughy
09-02-2013, 08:46 PM
top stuff justin

tilbrook@rbe.ne
09-02-2013, 09:18 PM
Thanks David!

Cheers,

Justin.

stardust steve
09-02-2013, 09:20 PM
Nice one Justin (again) :lol:

Keep them coming:thumbsup:

astronobob
09-02-2013, 10:23 PM
Thats a ripper Justin, nicely composed and well executed :thumbsup: :thumbsup:
Fits nicely in the field of the 8" at the moment ! Wonder how long that tail is going to grow over the coming weeks, will be interesting !
Good stuff !

tilbrook@rbe.ne
10-02-2013, 10:43 AM
Thanks Steve!



Thanks Bob!

Love all this comet stuff!

Cheers,

Justin.

anthony.tony
10-02-2013, 11:37 AM
Thats Nice - Tony

tilbrook@rbe.ne
10-02-2013, 02:24 PM
Thanks Tony!

Cheers,

Justin.

Matt Wastell
10-02-2013, 02:40 PM
Excellent image - to get such super images of these comets must be a buzz!

tilbrook@rbe.ne
10-02-2013, 05:54 PM
Thanks Matt!

Yes must admit, I'm really enjoying this comet.

Cheers,

Justin.