Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

174P Echeclus outburst - before and after.

  • Please log in to reply
12 replies to this topic

#1 happylimpet

happylimpet

    Vanguard

  • *****
  • topic starter
  • Posts: 2424
  • Joined: 29 Sep 2013
  • Loc: Southampton, UK

Posted 13 December 2017 - 07:59 AM

Images from 25th November and 11th December, before and after the 7th December outburst. Both are full res (~0.7"/pixel).

 

Before (45 mins):

ech-2_lflat_crop-fullres_crop.jpg

 

After (2hours):

ech-1_cropflat_deconv-annot.jpg

 

The second was with the 12", the first was either the 12" or the 16", embarassingly I cant recall. However they have very similar FL (1500 and 1597mm) so its not pivotal. North up on first, to the left on the second.

 

Both are with a Baader 610 filter, ASI1600MM, 10 sec subs, ASA0.73x 2korr reducer.

 

The 'after' image shows very clear asymmetry. Tempting to think this may be a jet rotating with the asteroid.

 

 


  • PrestonE, JMP, sfugardi and 11 others like this

#2 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 14 December 2017 - 02:06 PM

Very cool. Thanks.



#3 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 14 December 2017 - 02:59 PM

Comet 174/P at Dec 14 2017 0344 UT from New Mexico. C14. - Thomas

Attached Thumbnails

  • Comet174P_Dec142017_bw0344UTdetailIRasymmetry.png

  • JMP, Michael Harris, happylimpet and 1 other like this

#4 happylimpet

happylimpet

    Vanguard

  • *****
  • topic starter
  • Posts: 2424
  • Joined: 29 Sep 2013
  • Loc: Southampton, UK

Posted 15 December 2017 - 10:35 AM

Comet 174/P at Dec 14 2017 0344 UT from New Mexico. C14. - Thomas

 

Nice one. Looks to be much the same morphology. Not sure how they relate though in terms up north etc.



#5 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 16 December 2017 - 02:06 AM

Here is another image a day later. Comet 174/P on Dec16 2017 0311:26ut. I know there is a lot more detail in this comet and I hope to get my scope tuned better in order to see it.- Thomas

Attached Thumbnails

  • Comet174P_cn_Ddec162017_031126ut_25600iso40sec.png

  • Mirzam, happylimpet and 555aaa like this

#6 einarin

einarin

    Viking 1

  • -----
  • Posts: 820
  • Joined: 23 Dec 2016

Posted 17 December 2017 - 08:01 AM

Due to constant cloudiness I decided to use remote observatory in Italian Dolomites.

Mount: Astrosysteme Austria DDM85XL
Optics: 20” Cassegrain with ASA 0.73 corrector
CCD: FLI Proline 16803

 

Same feature is seen here as well (didn't get calibration frames so...).

Attached Thumbnails

  • P174_2017-12-16_30x1min_bin1_RGB_10x1min L.jpg

Edited by einarin, 17 December 2017 - 08:40 AM.

  • JMP and happylimpet like this

#7 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 17 December 2017 - 11:09 PM

Dec 18 2017 0256 UT 120 second exposure 25600 ISO. - Thomas

Attached Thumbnails

  • Comet174P_Dec182017_025653UTC_120sec_25600isomAShcraft.jpg

  • JMP, happylimpet and aeroman4907 like this

#8 happylimpet

happylimpet

    Vanguard

  • *****
  • topic starter
  • Posts: 2424
  • Joined: 29 Sep 2013
  • Loc: Southampton, UK

Posted 18 December 2017 - 04:51 AM

Dec 18 2017 0256 UT 120 second exposure 25600 ISO. - Thomas

 

Thats a nice image Thomas but have you thought about getting an hours worth of them and stacking? Be interesting to see the colour and get much deeper.



#9 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 18 December 2017 - 11:02 AM

I am just looking into stacking. Someone mentioned Pixinsight. I have to be careful of committing more time to sitting in front of the computer screen processing. But I am aware that my single exposures have gone about as far they can go in quality and there is a great deal more detail within these comets. Thanks for the suggestion as I am just learning as I go.



#10 happylimpet

happylimpet

    Vanguard

  • *****
  • topic starter
  • Posts: 2424
  • Joined: 29 Sep 2013
  • Loc: Southampton, UK

Posted 19 December 2017 - 08:25 AM

DeepSkyStacker. A million times easier than pixinsight.



#11 aeroman4907

aeroman4907

    Mariner 2

  • -----
  • Posts: 275
  • Joined: 23 Nov 2017
  • Loc: Castle Rock, Colorado

Posted 19 December 2017 - 08:57 AM

Thomas, if you don't mind, I took the liberty of doing a very crude run through on PixInsight (PI).  I agree with Happylimpet that stacking will improve your results significantly, and I would agree that there is a learning curve with PI, but there are many, many tutorials out there on how to use it.  If you are able to take a picture of a comet, I think you'll pick up PI with no problem.  It is really powerful for certain things.  The image attached is from processing your jpg and an original file would be much better.  It's not perfect and is just about 5 minutes of working and experimenting with the image.  Just something to consider.

 

sample comet CN.jpg


  • Thomas Ashcraft likes this

#12 Thomas Ashcraft

Thomas Ashcraft

    Surveyor 1

  • -----
  • Posts: 1694
  • Joined: 10 Dec 2007

Posted 19 December 2017 - 10:51 AM

Thanks Aeroman for the pixinsight recommendation and processing of that pic. I checked out Nebulosity yesterday. Am studying comparative reviews between software options.


  • aeroman4907 likes this

#13 aeroman4907

aeroman4907

    Mariner 2

  • -----
  • Posts: 275
  • Joined: 23 Nov 2017
  • Loc: Castle Rock, Colorado

Posted 19 December 2017 - 11:14 AM

You are welcome Thomas.  PI does have a one month free trial with full access and no watermarks or other limitations to its use or images.  You will have some screen time with it though.  I probably have about 150-200 hours studying and using it and I would consider myself just modestly proficient with it.  Others are WAY better using than I am.




CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics