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

Your Earliest Comet F8 SWAN Sighting from US or Similiar Latitude?

binoculars charts dob observing
  • Please log in to reply
3 replies to this topic

#1 SNH

SNH

    Mariner 2

  • *****
  • topic starter
  • Posts: 203
  • Joined: 20 Oct 2015
  • Loc: North central Arkansas

Posted 18 May 2020 - 06:19 AM

Well, I last tried (and failed) for the comet on the 9th and didn't want to wait this long to try again, but the weather didn't permit it. I was able to barely see the comet (F8 SWAN) in my 7x35 binoculars after spotting it with my 12x60s right at the beginning of astronomical twilight. It was basically a 15' wide glow with a good brightening towards the center. By comparing it to nearby stars, I'd have to say that it appeared about magnitude +7.5. I know that sounds faint (it surprised me), but even in high in a dark sky I don't see any way it could've been brighter than +7.0 factoring in more of its coma. But I'm no expert...

 

What I'm wondering is how many people have seen it to date? I know of one or two people who beat me to it from here in the US or similar latitudes. Anybody else? Am I the tenth person or the 50th person to see it, roughly? Curious!

 

Scott

 



#2 Carl H.

Carl H.

    Vostok 1

  • -----
  • Posts: 174
  • Joined: 10 Nov 2008
  • Loc: Tucson, AZ

Posted 18 May 2020 - 10:59 AM

I've been visually observing C/2020 F8 (SWAN) since the morning of May 5 from Tucson (32N). The comet was an easy object in 30x125 on the 12-14 but seems to be fainter and more difficult now. Even at its best, it was barely visible in 10x50s.

 

May 18.46, 5.9, 4' (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);

May 17.46, 5.8, 4' (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);

May 14.46, 5.6:, 5’ (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);
May 13.46, 5.7, 4’ (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);
May 12.47, 5.7, 4’ (Carl Hergenrother, Tucson, AZ, U.S.A., 10x50 binoculars);
May 12.47, 5.7, 3’ (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);

May 05.48, 5.6:, 4’ (Carl Hergenrother, Tucson, AZ, U.S.A., 30x125 binoculars);

 

There's a good chance tomorrow morning will be my last sighting (at least until it shifts into the evening) as my view to NNE is obstructed by mountains.


  • Kimbo_2112 likes this

#3 bobman024

bobman024

    Lift Off

  • -----
  • Posts: 1
  • Joined: 18 May 2020

Posted 18 May 2020 - 02:32 PM

I had a failed attempt (Phoenix, AZ) this morning with 10x42 binoculars and a small starter telescope from 3:45-4:40. Unfortunately, the best spot for me to view NNE that low was out facing towards an intersection with too many bright lights. 

 

Going to try again tomorrow from a slightly different location. 



#4 Robin

Robin

    Explorer 1

  • -----
  • Posts: 86
  • Joined: 14 Sep 2008

Posted 18 May 2020 - 03:15 PM

Hi Scott,

 

Today I observed it visually for the first time (48°N, Germany) with my 12" Dobsonian. I estimated its brightness to be 6.4 mag. It just appeared as a fanned-out fuzzy cloud that was brightest at its front end. Only 6° above the theoretical horizon at 03:40 local time.

Please find attached my sketch.

 

Clear skies

Robin

 

Attached Thumbnails

  • C2020F8Robin20200518.jpg

  • Dave Mitsky, George N and Kimbo_2112 like this


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





Also tagged with one or more of these keywords: binoculars, charts, dob, observing



Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics