Jump to content


Photo

Jupiter and Neptune

This topic has been archived. This means that you cannot reply to this topic.
16 replies to this topic

#1 Special Ed

Special Ed

    Fly Me to the Moon

  • *****
  • Posts: 7064
  • Joined: 18 May 2003

Posted 30 May 2009 - 06:18 AM

Hi Folks,

I made this quick widefield sketch of Jupiter and Neptune this morning and posted it in the Planetary Observing forum. The two planets have an angular separation of only ~25 arcminutes, so it is a rare opportunity to easily confirm a sighting of Neptune (mag 7.9), since the King is blazing away right next to it. :cool:

I made the sketch with a 2B pencil and inverted it digitally after scanning.

#2 JimPie

JimPie

    Viking 1

  • -----
  • Posts: 522
  • Joined: 10 Nov 2007

Posted 30 May 2009 - 11:40 AM

Mike ,
Very well done sketch of Jupiter ,satilites and neptune . :waytogo:

#3 Special Ed

Special Ed

    Fly Me to the Moon

  • *****
  • Posts: 7064
  • Joined: 18 May 2003

Posted 30 May 2009 - 01:44 PM

Thanks, Jim. :)

#4 frank5817

frank5817

    Cosmos

  • *****
  • Posts: 8541
  • Joined: 13 Jun 2006

Posted 30 May 2009 - 06:09 PM

Michael,

Very impressive sketch. :bow: :cool: I did not realize that they were so close in the sky. I don't think about looking for Neptune until late summer. I should get out there one morning before sun up and have a look for myself. Thank you for posting this.

Frank :)

#5 CarlosEH

CarlosEH

    Fly Me to the Moon

  • *****
  • Posts: 7286
  • Joined: 19 Jan 2005

Posted 30 May 2009 - 06:35 PM

Michael,

An excellent low power observation showing Jupiter (and it's satellites) and Neptune in the same field. It must been exciting to think that you experienced a view similar to Galileo's long ago. Thank you for sharing it with us all.

The famous Italian astronomer Galileo Galilei (1564-1642) is believed to have observed Neptune in the same field of view as Jupiter on the night of December 27, 1612. Jupiter and Neptune at that time were separated by 16.5 arc-minutes. The typical Galilean telescope employed a plano-convex objective focal length between 30-40 inches and stopped down between 0.5-1.0 inches), a plano-concave ocular with a focal length of 2 inches. Galileo typically used magnifications between 15-20x for his observations (he may have used up to 32x but such an instrument would have proved too shaky with a small field). All of these facts make his monumental observations all the more impressive.

An image below from Starry Night which shows the positions of Jupiter and Neptune on the night of December 27, 1612.

Links;
http://en.wikipedia....Galileo_Galilei
http://galileo.rice.edu/
http://www.dioi.org/Kowal-Galileo.pdf
http://www.nineplane...rg/neptune.html
http://galileotelesc...scopeoptics.htm

Carlos

Attached Files



#6 rolandlinda3

rolandlinda3

    Gemini

  • *****
  • Posts: 3427
  • Joined: 24 Jan 2006

Posted 30 May 2009 - 10:56 PM

Fine work Michael and a really nice catch. Roland

#7 JayinUT

JayinUT

    I'm not Sleepy

  • *****
  • Posts: 3933
  • Joined: 19 Sep 2008

Posted 31 May 2009 - 08:14 AM

Mike,

Wow, I wish I just felt better as this would have been a wonderful sight to see in the early morning hours. Thanks for posting your sketch, it captures the image of Jupiter, the satellites and Neptune in really nice detail in terms of location. Nice bands on Jupiter as well.

#8 Special Ed

Special Ed

    Fly Me to the Moon

  • *****
  • Posts: 7064
  • Joined: 18 May 2003

Posted 01 June 2009 - 02:52 PM

Frank, Carlos, Roland, Jay--thank you very much.

Carlos, thanks for posting the informative links and graphic.

Frank, I think Neptune and Jupiter are going to have a couple more close encounters later this summer, iirc. I'll have to check for the details.

#9 frank5817

frank5817

    Cosmos

  • *****
  • Posts: 8541
  • Joined: 13 Jun 2006

Posted 01 June 2009 - 05:27 PM

Michael,

Yes I see July 9th is the next pairing and 5th mag.Mu Cap. will be between them.

Frank :)

#10 Tommy5

Tommy5

    Mercury-Atlas

  • -----
  • Posts: 2814
  • Joined: 28 Mar 2004

Posted 01 June 2009 - 09:13 PM

great sketch of these two gas giants, i will take a look at them later this year.

#11 rodelaet

rodelaet

    Gemini

  • *****
  • Posts: 3185
  • Joined: 28 Apr 2006

Posted 03 June 2009 - 04:06 PM

Michael,

Excellent capture of a very special event! :cool:

I guess I've never seen two planets in the same field of view. :question:

#12 Special Ed

Special Ed

    Fly Me to the Moon

  • *****
  • Posts: 7064
  • Joined: 18 May 2003

Posted 04 June 2009 - 02:38 PM

Thanks, Rony. It's not too late to see the pair in the same FOV--your 4" scope should give you a good view. The hard part is getting up at 4 AM. ;)

#13 Ragaisis

Ragaisis

    Ranger 4

  • *****
  • Posts: 350
  • Joined: 16 May 2008

Posted 04 June 2009 - 02:40 PM

I'll be getting home from job #2 (where I lie to people for a living) at about 3am CDT. If it's clear I'm pulling out the scope. I've NEVER seen Neptune and am stoked for the experience.

Chris

#14 markseibold

markseibold

    Surveyor 1

  • -----
  • Posts: 1579
  • Joined: 19 Jan 2008

Posted 04 June 2009 - 03:48 PM

Michael

Very nice sketch! :bow: :bow: :bow: Thanks for posting and reminding us. I have not seen two planets together in the same FOV for some time. Cannot remember that last pairing now a few years ago but Uranus and Neptune were very close together in the same FOV in (I think) 1988 or there abouts.

For those who have not seen Uranus or Neptune, I seem to remember Uranus as a pale Kahki green disc at only 3 or 4 arc seconds diameter with a couple faint moons. Neptune is much smaller at only a couple or less arc seconds and appears as a pale blue dot.

Thanks also to Carlos for posting the links.

Mark

#15 rodelaet

rodelaet

    Gemini

  • *****
  • Posts: 3185
  • Joined: 28 Apr 2006

Posted 04 June 2009 - 04:00 PM

The hard part is getting up at 4 AM. ;)


Yes it is. :sleepy: :sleepy: :sleepy:

#16 Dee

Dee

    Viking 1

  • *****
  • Posts: 871
  • Joined: 12 Mar 2006

Posted 04 June 2009 - 06:22 PM

Excellent observation and cool sketch there Michael.

Dee

#17 Special Ed

Special Ed

    Fly Me to the Moon

  • *****
  • Posts: 7064
  • Joined: 18 May 2003

Posted 04 June 2009 - 09:40 PM

Thanks, Dee, Mark, T5. :) Hope you all get a look this summer since Jupiter's retrograde motion will keep it in the vicinity of Neptune.

Chris, let us know if you are successful seeing Neptune.






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics