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Comet Africano is worth observing

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24 replies to this topic

#1 Uwe Pilz

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Posted 11 August 2019 - 02:46 AM

Dear observers,

 

in June and July we had only very dim comets in the sky. I write the monthly comet's corne in our German magazine Sterne und Weltraum ("stars and space"). I did not know what to write.

But all is better now. We have some dim but visible comets in the sky, and we have C/2018 W2 (Africano). It has around 11 mag now and it is large! I detected nearly 3 armins at my 21.0-mag sky. I saw hints of a tail - a fuzzy side. I think it is a valuable target for instruments beyond 8 inch aperture.

 

 

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  • 19081101002018W2_Ninja_144.jpg

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#2 Roragi

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Posted 11 August 2019 - 07:25 AM

Interestingly, I rarely dedicate time to comets, this must be a small challenge in a modest opening. Thanks for teaching.

 

Roberto.



#3 flt158

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Posted 11 August 2019 - 07:54 AM

I wonder what constellation Comet Africano is in?

 

FLT 158



#4 frank5817

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Posted 11 August 2019 - 08:36 PM

Uwe,

 

This visitor looks very nice.

 

Like your sketch.

 

Frank :)



#5 Uwe Pilz

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Posted 11 August 2019 - 11:24 PM

> wonder what constellation Comet Africano is in?

 

Africano is in Camelopardis now. It moves through the head of Perseus into Andromeda in the next weeks. To observe it I recommend an accurate map. I always make overview map for starhopping (10 degs) and a detail map for finding dimmer comets (1 deg).

 

The map has markers for every day 0h UT, starting today.

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  • africano.jpg

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#6 niteskystargazer

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Posted 12 August 2019 - 01:53 PM

Uwe,

 

Good sketch of Comet Africano  smile.gif .

 

CS,KLU,

 

thanx.gif ,

 

Tom



#7 Aquarellia

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Posted 13 August 2019 - 03:28 AM

Indeed Uwe

This morning between Moon set and Sun rize I trued to observe 289P (Blanpain), C/2018 T2 (PanSTARRS), 260P (Mc Naugt) without any success but Africano was ok with my 10" Dall Kirkham, here's the result:

 

c2018w2-20190813_l.jpg

 

That was my 3rd observation of this comet but the first time that I was able to see the non-symetrical shape of the coma.

Michel

 

 


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#8 CaptainQuasar

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Posted 13 August 2019 - 06:57 AM

Love comets. Nice sketch, and thanks for the map! At mag 11, would it be worth trying for in my 203mm dob? 



#9 Uwe Pilz

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Posted 13 August 2019 - 10:03 AM

> would it be worth trying for in my 203mm dob?

 

Yes, of course! But the sky needs to be dark, Next night should be the last moon-less observation gap.


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#10 Aquarellia

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Posted 14 August 2019 - 03:31 AM

Love comets. Nice sketch, and thanks for the map! At mag 11, would it be worth trying for in my 203mm dob? 

No Problem !

As said here before by Uwe the success key is a dark sky

August 2nd evening, so low on the North horizon, I detected the comet in a 120mm bino, the sky was perfect (1500m altitude) and however the detection was very very limit to be sure!

August 11 early in the morning, with another bino (126mm) that was more easy to see but under a very dark sky too.

August 13th early in the morning with my 250mm the detection was easy (see sketch)

 

Other information here : https://www.cloudyni...18-w2-africano/

 

More generaly

A monthly ALPO information is availlable here :

https://www.cloudyni...or-august-2019/

 

And a good map source for the best comets is monthly updated here : https://cometchasing.skyhound.com/

 

Hope this helps

 

Clear sky to you all

Michel


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#11 Uwe Pilz

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Posted 14 August 2019 - 11:54 PM

Thank you Michel. I looked for a while after good finding charts. The skyhound site is great and contains them.



#12 Heidescoper

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Posted 16 August 2019 - 01:11 PM

hi all,

Michel:

> I trued to observe 289P (Blanpain), C/2018 T2 (PanSTARRS), 260P (Mc Naugt) without any success <

I could`nt see 2018 T2 in the morning time by the 11.august.
He stood only 16° high. I saw stars down to 14,3mag in the near area but NO comet.
I used my 21" Dobson with V 215x, 242x and 298x.

289P should be much heavier to see as 2018 T2 round about 16-17mag in These nights...

CS
Christian

Edited by Heidescoper, 16 August 2019 - 01:12 PM.

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#13 Chiron0224

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Posted 25 August 2019 - 04:57 PM

Excellent information on this comet.  I'll definitely have to check it out.  Also, as an astronomer who is also learning German, does Sterne und Weltraum have a digital version I could subscribe to?



#14 Uwe Pilz

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Posted 05 September 2019 - 01:07 PM

Dear observers, two nights ago (September 4th, 0:30 h UT) I observed the comet with my 7 cm binoculars. It was not very hard, but required concentrated observing, and a accurate map.

It is around 9m5  now , the diameter is 6 arcmins. It is an easy object for any telescope, if you have a dark sky.

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  • 1909040030C!2018~W2(Africano)_16x70_16.jpg

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#15 Aquarellia

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Posted 05 September 2019 - 01:18 PM

Thank you Uwe, good skeych

my last observation was done sept 1st.  

The DC was very low, maybe 2, so that was not a comet with a brillant pseudonucleus

Michel



#16 Zorbathegeek

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Posted 05 September 2019 - 07:38 PM

Weather permitting, I'm going to take my 20x80's out to a dark site when it arrives down here in the southern hemisphere. It doesn't reach 30 degrees altitude here in southern New Zealand until the 27th, when it's at it's closest. So only a small window. 

 

Thanks for posting the sketches,

Ray


Edited by Zorbathegeek, 05 September 2019 - 07:39 PM.

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#17 Uwe Pilz

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Posted 05 September 2019 - 10:24 PM

Dear Michel, I was not able to giess the DC in my binocular. May be it is rather diffuse.



#18 Special Ed

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Posted 06 September 2019 - 01:39 PM

Uwe,

 

Nice observational sketch.  I looked for Comet Africano on 4 September too, around 0500 UT with my C14 but I didn't see it.  I thought I was looking in the right place but maybe I wasn't if you could see it with your 16x70's.  Transparency was only average.



#19 Jef De Wit

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Posted 06 September 2019 - 02:18 PM

A sketch from the end of August. It is a faint object, even in a 30 cm under a rather dark sky. I could see a core and a faint halo.

 

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  • C 2018 W2 (Africano) afgewerkt 500.jpg

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#20 Special Ed

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Posted 04 October 2019 - 08:29 PM

Comet Africano is still around and an interesting object under dark, transparent skies.  I made this eyepiece sketch last night using 2B and HB pencils and a stump on Strathmore medium weight drawing paper.  A few more details here.

 

C_2018_W2_Africano_composite_v1.jpg


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#21 Aquarellia

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Posted 05 October 2019 - 12:13 AM

Well done Michael,

Sadly I missed that opportunity to see Neptune and the comet in the same FOV.

Your coma elongation is very similar to the obe I observed 2 nights ago

Michel



#22 Special Ed

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Posted 05 October 2019 - 07:14 AM

Thanks, Michel!  Glad our observations are similar.

 

I forgot to mention that I flipped the sketch to give the correct image view.



#23 azure1961p

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Posted 06 October 2019 - 10:03 AM

Funny.  I was expecting a bone through the nucleus.

 

Pete



#24 Uwe Pilz

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Posted 07 October 2019 - 11:33 PM

Dear Ed, in you sketches I see a hint of the tail. One side is lightly more fuzzy. I observed the same thing a few weeks ago in August.



#25 Special Ed

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Posted 08 October 2019 - 08:06 PM

Yes, just a hint of the tail.  This comet requires dark skies to get the best view and even then it's difficult, but we take what we can get.  I wish I had used my SWAN filter on this one but didn't--duh!




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