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Comet C/2015 V2 (Johnson)

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#26 LivingNDixie

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Posted 01 April 2017 - 06:03 AM

I got out this morning and observed this comet with 10x50s and my 8in. With the binoculars I could not see the comet sadly. I also could not see the comet in my finder scope either. However the comet was easily seen with the 8in. At 75x the comet to me appeared fan shaped with no bright nucleus. I would put magnitude at 9.5ish. Another nice telescopic comet!
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#27 Thomas Ashcraft

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Posted 03 April 2017 - 12:56 AM

April 03, 2017 0443:UT

Comet C/2015 V2 (Johnson )  Canon 6D, C-14 Edge, Backyard EOS,  60 second exposure, 12800 ISO.

 

Adding to the collection.  - Thomas Ashcraft - Observatory of Heliotown - New Mexico

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  • COMETC2015V2JOHNSON_cnbestLIGHT_60s_12800iso_+9c_20170402-22h43m21s158ms.jpg

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#28 Thomas Ashcraft

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Posted 03 April 2017 - 12:58 AM

Detail.

 

 

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  • COMETC2015V2JOHNSON_cnLIGHT_60s_12800iso_+9c_20170402-22h43m21s158msdetail.jpg

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#29 Thomas Ashcraft

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Posted 06 April 2017 - 10:13 AM

(My fourth comet of this night's session.)

 

April 06 2017  C/2015 V2 JOHNSON

 

C-14 Edge HD, Canon 6D, Backyard EOS, 120 seconds, ISO 12800  0918 UT

 

Thomas - Heliotown Observatory - New Mexico

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  • C2015V2JOHNSON_LIGHT_cnvh13100120s_12800iso_+6c_20170406-03h18m40s640ms.jpg


#30 Sheliak_sp

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Posted 07 April 2017 - 10:50 AM

This is how I saw it last 4/4/17, so nice with that curved tail:

 

https://elnidodelast...s-de-primavera/

 

c-2015-v2-johnson.png?w=505

 

Clear skies!

 

Migue


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#31 Kaikul

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Posted 07 April 2017 - 12:20 PM

Comet C/2015 V2 (Johnson)  Apr. 6, 2017 00:49:01 CDT

 

80mm refractor @ f/2.5, SLT mount, RI(b) camera

 

ST80_Comet 2015 V2 (Johnson)

 


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#32 David_Ritter

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Posted 07 April 2017 - 02:54 PM

Comet C/2015 V2 (Johnson)  Apr. 5, 2017 appx 02:30 MDT to appx 0530 MDT

 

Integration time: 2 hrs 36 minutes

 

MN190 Mak-Newt, SBIG STF-8300M, EQ8

 

johnson_3_crop.jpg

 


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#33 vakulenko_sergiy

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Posted 11 April 2017 - 07:36 PM

My monday observation of C/2015 V2

 

ED80, OSC QHY8, 16x300s

2017 04 10 2015V2 ed80 qhy8 X16

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#34 Thomas Ashcraft

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Posted 14 April 2017 - 09:59 AM

Comet C/2015 V2 Johnson April 14 2017 0312 UT 60 seconds exposure 12800 ISO -  C14 Canon 6D - Thomas - New MexicoCometC2015V2Johnson_cn1_Ap142017_0312UT_60sec12800Ashcraft.jpg


Edited by Thomas Ashcraft, 14 April 2017 - 10:03 AM.

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#35 Thomas Ashcraft

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Posted 14 April 2017 - 10:36 AM

Here is some further processing. I am not sure how much processing enhancement is allowable for a scientific image before artifacts are introduced? I am just learning at the moment. - Thomas

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  • CometC2015V2Johnson_cnBW7in_Ap142017_0312UT_60sec12800Ashcraft.jpg.jpg

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#36 Thomas Ashcraft

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Posted 16 April 2017 - 10:27 AM

Comet C/2015 V2 Johnson April 16 2017 0410 UT 120 seconds exposure 25600 ISO - Conditions : high cirrus. C14 Canon 6D - Thomas - New Mexico

 

Attached Thumbnails

  • COMETJOHNSON_LIGHTpspoor_120s_25600iso_+15c_20170415-22h09m59s416ms.jpg


#37 Thomas Ashcraft

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Posted 23 April 2017 - 09:15 AM

Comet C/2015 V2 (Johnson)    April 23 2017  1123 UT ( 5:23 am MDT )  single 60 second exposure  25600 ISO,  Canon 6D,  C-14

 

I got up too late this morning and the sky was brightening. A glimpse at any rate. - Thomas - New Mexico

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  • Cometv2JohnsonAp232017_BWinv60s256001123utAshcraftcrop.jpg

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#38 caheaton

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Posted 24 April 2017 - 09:20 AM

I caught this one Saturday night.  Skies were relatively decent (despite the local forecast from the clear sky chart).  From my light polluted back yard I was able to visually see stars down to about mag 4.  I couldn't locate the comet Johnson using 15 x 70's, but in the 80mm triplet it was just barely visible as an elongated wisp of light that was definitely there, but best detected by moving the scope slightly and noticing that the wispy patch moved with the scope.  (It didn't help that my eyes were unable to get fully dark adapted due to the local lp...), but at least I was able to log a new comet!


Edited by caheaton, 24 April 2017 - 09:21 AM.


#39 Thomas Ashcraft

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Posted 24 April 2017 - 04:03 PM

Comet C/2015 V2 (Johnson)    April 24 2017  0258 UT   single 30 second exposure  25600 ISO,  Canon 6D,  C-14 -

 

Supposedly this comet has developed an ion tail but I could not detect it.  Thomas - New Mexico

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  • COMETV2JOHNSON_LIGHT_cnbest30s_25600iso_+23c_20170423-20h58m13s365ms.jpg

Edited by Thomas Ashcraft, 24 April 2017 - 04:04 PM.

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#40 Thomas Ashcraft

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Posted 24 April 2017 - 09:00 PM

Here is my first experiment with a stack of a few images centered on the comet nucleus using a trial version of Nebulosity. I used a Lumicon comet filter.    April 24 2017  -- Thomas

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  • nebstacksuccesscometcenterps10100.png

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#41 Tonk

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Posted 25 April 2017 - 04:34 AM

Supposedly this comet has developed an ion tail but I could not detect it.


Yes you likely need much longer exposures and/or a faster imaging system.

I'm just getting ready to process a large stack of 5 minutes exposures using a F/3.6 ASA astrograph so I'll pay special attention to see what comes out

#42 Thomas Ashcraft

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Posted 25 April 2017 - 10:57 AM

Good luck.  I saw a pic from April 23 showing the ion tail:  https://britastro.org/node/10000



#43 Dave Mitsky

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Posted 27 April 2017 - 02:42 AM

I observed Comet C/2015 V2 (Johnson) using the Naylor Observatory's 17" f/15 classical Cassegrain at 116 and 162x this morning.  The comet was fairly bright with a somewhat noticeable pseudonucleus.  The coma was asymmetric.

 

Dave Mitsky



#44 Aquarellia

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Posted 27 April 2017 - 04:16 AM

Good to know Dave

April 23th with my 5" bino f5 I observed this comet (Johnson) with 2 others, 41P and C/2015 ER61 (PANSTARRS) but I was unable to see the Lovejoy one.

The set of the 4 sketches was posted here: https://www.cloudyni...rid-fireball/.

Michel



#45 Aquarellia

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Posted 29 April 2017 - 09:04 AM

Here my last sketch of this "faithful" comet.

 

C2015V2-20170429_l.jpg

 

Michel


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#46 Thomas Ashcraft

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Posted 01 May 2017 - 08:34 AM

Comet C/2015 V2 (Johnson)    May 01 2017  1033 UT   single 60 second exposure,  25600 ISO,  Canon 6D, No filter,  C-14 - Thomas - New Mexico

 

Attached Thumbnails

  • COMETJOHNSON_LIGHT_CN10100ps60s_25600iso_+12c_20170501-04h33m13s059ms-copy.jpg

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#47 Tonk

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Posted 03 May 2017 - 10:18 AM

I'm about a month behind sorting out images - but here is the comet in the early hours (UT) of 02/04/2014 (UK format - that's April ;) ). The faintest of ion tails can be teased out pointing roughly towards 7 o'clock

get.jpg


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#48 Thomas Ashcraft

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Posted 03 May 2017 - 10:48 PM

Lovely! I can see the ion tail. Thanks!



#49 andrew hampton

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Posted 04 May 2017 - 09:45 AM

I was able to view the comet in 10x50s on May 1st with the moon obscured. It has certainly brightened over the last few weeks but was not an easy object to view, just a hazy patch.

 

 

andrew



#50 Thomas Ashcraft

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Posted 05 May 2017 - 05:36 PM

Comet C/2015 V2 (Johnson)    May 05 2017  0336 UT   Washed out by moonlight somewhat,  single 60 second exposure,  25600 ISO,  Canon 6D, No filter,  C-14 - Thomas - New Mexico

 

 

Attached Thumbnails

  • CometV2JohnsonMay052017cn10100_0330ut60sec25600_Ashcraftcrop.jpg



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