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

Comet C/2018 W2 (Africano)

  • Please log in to reply
57 replies to this topic

#26 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 19 September 2019 - 09:58 PM

I was able to observe Comet Africano again earlier tonight despite it being still relatively low in the sky.  I used the 17" f/15 classical Cassegrain at the orange-zone Naylor Observatory at magnifications of 118, 170, 216, and 259x, with 259x providing the best view.  The comet was easier to see than it was almost two weeks ago but was still not much to write home about.  A fellow ASH member was also able to see Comet Africano.

 

Dave Mitsky

Attached Thumbnails

  • Comet Africano September 19.PNG

  • Special Ed, Stardust Dave, makeitso and 1 other like this

#27 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 19 September 2019 - 11:00 PM

Much to surprise I was still able to see Comet Africano well after the waxing gibbous Moon had risen.  The comet had traveled an appreciable amount in the span of an hour or so.  I used magnifications of 170, 216, and 259x.


  • George N, Zorbathegeek and j.gardavsky like this

#28 Zorbathegeek

Zorbathegeek

    Sputnik

  • -----
  • Posts: 32
  • Joined: 19 Jul 2019

Posted 20 September 2019 - 12:18 AM

Thanks for the sobering reports Dave, which have tempered my enthusiasm regarding this comet. My interest in non naked eye comets is a very new thing and so I don't know how typical the observations of Comet Africano are. However, it strikes me as interesting that the five submissions over the past two days show a scatter of 4.2 magnitude. Weather permitting, I intend driving out to a darker area next week with my 20x80's when it reaches 35 degrees altitude in the south NZ skies and trying my luck anyway. It will continue rising in moonless skies as it begins to fade so I may also take my 6" Dobsonian at some point. Ray. 



#29 Stardust Dave

Stardust Dave

    Viking 1

  • -----
  • Posts: 965
  • Joined: 15 Jan 2016
  • Loc: 39*N 122*.40' W

Posted 20 September 2019 - 12:45 AM

Observed this one tonight from a bortle 3ish zone - (at home) and showed best in my 13" at 78X.

The Comet's motion was appreciable as Dave Mitsky said , much travel over the few short hours tonight before moonrise.

Did not go much beyond 125X , that really showed some dimmer background stars and the Comet's motion more apparent.

 

The comet was very diffuse and could see no obvious tail direction tonight. Transparency was a 7-10

Was able to pick up Africano in my 4.5" ballscope at 20X.


  • Special Ed, Zorbathegeek and j.gardavsky like this

#30 Lada

Lada

    Sputnik

  • -----
  • Posts: 32
  • Joined: 19 Dec 2008
  • Loc: Dolni Bousov, Czech republic

Posted 21 September 2019 - 02:24 PM

Animation of C/2018 W2 (Africano) from 20.9.2019 from Czech republic / Dolní Bousov (backyard), total time = 3h20m / 120s exposure, N200/1000, Atik 320E mono, bin 2x2:

 

20-09-2019_C2018-W2_africano.gif

http://astro.ladisla...W2_africano.gif


  • Dave Mitsky, George N, 39.1N84.5W and 9 others like this

#31 einarin

einarin

    Surveyor 1

  • *****
  • Posts: 1964
  • Joined: 23 Dec 2016

Posted 22 September 2019 - 03:35 AM

Nice animation.

And a bright satellite flash.

Little too long individual exposures (elongated nucleus).



#32 j.gardavsky

j.gardavsky

    Vostok 1

  • -----
  • Posts: 132
  • Joined: 18 Sep 2019
  • Loc: Germany

Posted 22 September 2019 - 09:17 AM

Comet Africano through the 25x100 binoculars on 21st September

 

Hello all,

 

finally there have been clear skies on the 21st of September, giving me a feeling, like tonight or never again.

The comet has been spotted with my hand held 25x100FB binoculars as a faint glow across an unrelated pair of background stars, approximately on the line connecting the Struve's 1 (Mayer 1) double with Delta And.
The visual size of the faint glow has been abot two times of the pair of stars separation.

I have not been able to see for sure the comet's tail.
NELM in this area of skies: 5mag

Place: backyard

 

Reference showing the comet position and the pair of stars for UTC 20:30: https://heavens-abov...0&tz=UCT&cul=en

 

Clear skies,

JG


  • eros312, Jim T and Zorbathegeek like this

#33 Bill Barlow

Bill Barlow

    Skylab

  • *****
  • Posts: 4389
  • Joined: 03 Dec 2007
  • Loc: Overland Park KS

Posted 22 September 2019 - 11:56 AM

This comet looks pretty small from your time lapse movie, but bright enough to find.  Might try and see it tomorrow night.

 

Bill



#34 jeanc

jeanc

    Sputnik

  • -----
  • topic starter
  • Posts: 32
  • Joined: 11 Jun 2019

Posted 22 September 2019 - 06:01 PM

Hello a new GIF from Sep 21 19.51 - 21.16 UT LRGB 21.30 12"/4 and Sigma 6303, and LRGB

Regards Michael Jäger

 

https://spaceweather..._1569192403.gif

 

https://spaceweather..._1569192403.jpg


  • Dave Mitsky, George N, eros312 and 2 others like this

#35 Bill Barlow

Bill Barlow

    Skylab

  • *****
  • Posts: 4389
  • Joined: 03 Dec 2007
  • Loc: Overland Park KS

Posted 22 September 2019 - 08:22 PM

Nice images thanks for sharing.  I see that the Heavens Above site doesn't show/plot this comet anymore.  Has it faded away already?

 

Bill



#36 Zorbathegeek

Zorbathegeek

    Sputnik

  • -----
  • Posts: 32
  • Joined: 19 Jul 2019

Posted 22 September 2019 - 09:51 PM

Nice images thanks for sharing.  I see that the Heavens Above site doesn't show/plot this comet anymore.  Has it faded away already?

 

Bill

The comet will probably brighten a little over the next couple of days Bill. It is currently at 9 magnitude and may get to 8.8 - 8.9. It's closest approach to Earth occurs on Friday 27th September and it will then start to fade slowly. The problem for Northern Hemisphere observers is that the comet is getting lower in the sky as it moves from Andromeda into Pegasus and then Pisces. 

 

Ray.


  • j.gardavsky likes this

#37 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 22 September 2019 - 10:35 PM

Nice images thanks for sharing.  I see that the Heavens Above site doesn't show/plot this comet anymore.  Has it faded away already?

 

Bill

https://www.heavens-...lt=170.0&tz=EST

Attached Thumbnails

  • Comet Africano September 22.PNG

  • j.gardavsky likes this

#38 Bill Barlow

Bill Barlow

    Skylab

  • *****
  • Posts: 4389
  • Joined: 03 Dec 2007
  • Loc: Overland Park KS

Posted 23 September 2019 - 09:43 AM

Thanks.  I am using the old version which for some reason doesn’t show it.  Will look at the newer version of heavens above.

 

Bill



#39 LivingNDixie

LivingNDixie

    TSP Chowhound

  • *****
  • Moderators
  • Posts: 19271
  • Joined: 23 Apr 2003
  • Loc: Trussville, AL

Posted 25 September 2019 - 03:13 PM

I observed the comet this last night from my home. Observed for about 30 mins from 23:19-23:49 CDT. Movement was clearly seen, this comet is hauling. Comet showed maybe some elongation and a hint of condensation in the center. Comet is defuse but not hard to see. Best view was at 37.5X. Scope is a 8in. Skies are semi rural with maybe 5th mag stars over-ahead seen. No color seen. Magnitude est is 9.

It is a nice fuzzball comet.

Tried with 10X50s, thought I saw something popping at first in and out but it was a star. Could not see the comet in my 9X50 finder.

Hope this helps. Get out there a view this one!
  • Special Ed, eros312, Stardust Dave and 1 other like this

#40 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 26 September 2019 - 12:17 AM

I was able to observe Comet Africano again on Wednesday evening using the 17" classical Cassegrain at the Naylor Observatory.  It was my best view so far.  It appeared as a relatively large fuzzball with a bit of condensation.  I used 170 and 216x, with the latter providing the more pleasing view.

 

The comet is indeed moving rapidly and is now in the southeastern portion of the Great Square.

Dave Mitsky  

Attached Thumbnails

  • Comet Africano September 25.PNG

  • Special Ed and Stardust Dave like this

#41 Zorbathegeek

Zorbathegeek

    Sputnik

  • -----
  • Posts: 32
  • Joined: 19 Jul 2019

Posted 26 September 2019 - 06:38 AM

I just drove out to a dark site to see if I could view Africano through my 20x80 binoculars and was unable to detect anything. We have a good forecast for tomorrow night and the comet will transit at a higher altitude down here, so I'll take the 6" Dobo out and see how that goes.


  • j.gardavsky likes this

#42 Zorbathegeek

Zorbathegeek

    Sputnik

  • -----
  • Posts: 32
  • Joined: 19 Jul 2019

Posted 27 September 2019 - 05:58 AM

I did manage to see Africano's coma tonight from a dark site with my 6" Newtonian. It wasn't an easy target though and I think I would need to drive further afield to very dark skies to better appreciate this. Very happy to add another comet to the list though.


  • eros312 and j.gardavsky like this

#43 jhbanister

jhbanister

    Sputnik

  • -----
  • Posts: 49
  • Joined: 02 Dec 2017
  • Loc: North East Texas

Posted 27 September 2019 - 08:14 PM

I observed Africano for the first time last night (26 Sep) from fairly dark rural skies.  It was easy to spot in my 8” sct.  I called it “diffuse with a slightly brighter center.  No tail”.  I think it is noteworthy that we are among the first folks to see this “new” comet.


  • Zorbathegeek likes this

#44 chrysalis

chrysalis

    Hubble

  • *****
  • Posts: 19821
  • Joined: 10 Aug 2013
  • Loc: North Central NC

Posted 28 September 2019 - 10:20 AM

Hello The comet is now slowly getting into the reach of binoculars. On August 29 he was around the 10m0 bright. The coma is now greater than 5 arc minutes, but the comet is only moderately condensed.
On the images no tail is visible. Image from August 29th at 2.20 UT with 8 "/2.0 RASA and CCD L-4x3 min filter green, Regards Michael Jäger

Which cluster is that above the comet?



#45 einarin

einarin

    Surveyor 1

  • *****
  • Posts: 1964
  • Joined: 23 Dec 2016

Posted 28 September 2019 - 10:40 AM

King 6.



#46 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 29 September 2019 - 11:37 AM

I spent Thursday and Friday nights observing under the very dark skies at Cherry Springs State Park. 

 

On Thursday night, I first observed Comet Africano through a 17.5" Dob and not long afterwards through John Vogt's homemade 32" Dob and a 17mm Ethos (220x).  Even with 32 inches of aperture the comet was not all that impressive.  The coma was slightly asymmetrical in appearance and a bright condensation was obvious.  John got a high SQM reading of 21.7 (VLM of magnitude 6.5) that night. 

 

A fellow ASH member's 20" Obsession Dob provided another good view of Comet Africano on Friday night. 


  • SabiaJD likes this

#47 Giorgos

Giorgos

    Ranger 4

  • -----
  • Posts: 334
  • Joined: 14 Jan 2011
  • Loc: Athens, Greece

Posted 30 September 2019 - 04:51 AM

Hi all!

Comet C/2018 W2 (Africano) along with galaxy NGC7743 in Pegasus. Skywatcher 102/500 refractor, fringe killer, LN300 pal cctv camera, EQ6 mount. Autostacked with sharpcap 512x (5.2sec) exposures, light processing with fitswork.
I wonder whether the streak is caused by the comet movement... I let the camera running for several minutes.

Comet Africano_Stack_287_2.jpg
 


Edited by Giorgos, 30 September 2019 - 04:55 AM.

  • Stardust Dave likes this

#48 Tapio

Tapio

    Vanguard

  • -----
  • Posts: 2136
  • Joined: 24 Sep 2006
  • Loc: Tampere, Finland

Posted 30 September 2019 - 05:21 AM

Yes, only a minute or two exposure is enough to show comet movement.



#49 Stardust Dave

Stardust Dave

    Viking 1

  • -----
  • Posts: 965
  • Joined: 15 Jan 2016
  • Loc: 39*N 122*.40' W

Posted 30 September 2019 - 07:58 PM

Got out under good skies last Friday night 20" out for a quick session.  Quite transparent night.

Unprepared for the cold , I packed early - only after nice views of Africano best appearance at 210X   

 

Best presentation so far.


Edited by Stardust Dave, 01 October 2019 - 10:29 AM.


#50 Dave Mitsky

Dave Mitsky

    ISS

  • *****
  • Moderators
  • Posts: 82892
  • Joined: 08 Apr 2002
  • Loc: PA, USA, Planet Earth

Posted 02 October 2019 - 02:26 AM

I observed Comet Africano, which is currently in Pisces, again tonight using the 17" classical Cassegrain at the Naylor Observatory.  I used 170 and 216x, with the latter providing a somewhat better view.  The transparency was marginal and the comet looked rather lame, just an amorphous patch of fuzziness, compared to how it looked at Cherry Springs on Thursday and Friday nights. 




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