Jump to content


Photo

Jupiter and Saturn April 6/7

  • Please log in to reply
12 replies to this topic

#1 idp

idp

    Messenger

  • -----
  • Posts: 453
  • Joined: 21 Aug 2009
  • Loc: New Haven, CT

Posted 07 April 2013 - 03:08 PM

Here's a couple of sketches of Jupiter and Saturn from last night, with decent seeing (about III). I observed Jupiter with the 10" Clark refractor at Bethany (CT), 335x,08:35pm Eastern Time; Saturn from my front yard in New Haven a few hours later, Newton 10" f/7, 300x, 04:25am. Still without AR drive so it was a bit tricky.

These are the sketches I made right at the telescope, at times I like to leave them "raw". The dark spot is Ganymede's shadow.

Clear skies,

Ivano

Attached Files



#2 idp

idp

    Messenger

  • -----
  • Posts: 453
  • Joined: 21 Aug 2009
  • Loc: New Haven, CT

Posted 07 April 2013 - 03:10 PM

Here's Saturn.

Attached Files



#3 kenrenard

kenrenard

    Surveyor 1

  • -----
  • Posts: 1562
  • Joined: 13 Dec 2012
  • Loc: Dunmore, PA

Posted 07 April 2013 - 07:52 PM

Ivano,
Beautiful work. The Clark must provide great views.


Ken

#4 frank5817

frank5817

    Cosmos

  • *****
  • Posts: 8380
  • Joined: 13 Jun 2006
  • Loc: Illinois

Posted 07 April 2013 - 11:10 PM

Ivano,

Two truly excellent captures of these gas giants.
The Clark scope gives a fine look at Jupiter based on your sketch.

Frank :)

#5 idp

idp

    Messenger

  • -----
  • Posts: 453
  • Joined: 21 Aug 2009
  • Loc: New Haven, CT

Posted 08 April 2013 - 10:11 AM

Well, as a matter of fact optics would need a good check up... Contrast is not as good as it could be, so it takes some attention to pull out the details. Seeing makes a lot of a difference, it is truly great when it's good.

Ivano

#6 JeanB

JeanB

    Apollo

  • -----
  • Posts: 1330
  • Joined: 11 Jul 2011
  • Loc: Montreal, Canada

Posted 08 April 2013 - 11:14 AM

Lovely work, Ivano.

Jean

#7 niteskystargazer

niteskystargazer

    Gemini

  • *****
  • Posts: 3048
  • Joined: 05 Oct 2009
  • Loc: 41-43'-28" N 87-42'-39" W

Posted 08 April 2013 - 03:21 PM

Ivano,

Very good sketches of Jupiter & Saturn :).

CS,KLU,

:thanx:,

Tom

#8 Tommy5

Tommy5

    Mercury-Atlas

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

Posted 08 April 2013 - 08:01 PM

very nice planetary sketches, good detail on Jupiter despite its lower altitude .

#9 Heidescoper

Heidescoper

    Ranger 4

  • -----
  • Posts: 323
  • Joined: 21 Nov 2010
  • Loc: Niedersachsen, Germany

Posted 14 April 2013 - 03:55 AM

hi all,

Ivano:
great sketches !

The Saturn stencil is interesting, because the background is white too.
Do You draw it at homework or can I find it via www. ?
Are there several variations for the changing pol tilt ?

Bye
Christian

#10 Andrev

Andrev

    Skylab

  • *****
  • Posts: 4113
  • Joined: 08 Feb 2011
  • Loc: Montreal, Quebec, Canada

Posted 14 April 2013 - 04:51 AM

Ivano.

Very good sketches of the outer planets. Very nice details.

Andre.

#11 chrisrnuttall

chrisrnuttall

    Professor Emeritus

  • *****
  • Posts: 610
  • Joined: 29 Dec 2010
  • Loc: York, England

Posted 14 April 2013 - 10:41 AM

I love the raw Jupiter sketch, I sometimes prefer my raw pencil sketches to the final colour versions...oh well!

Christian, Google Saturn Viewer. you can enter any observation date and fov you want and then print a diagram of Saturn.

#12 idp

idp

    Messenger

  • -----
  • Posts: 453
  • Joined: 21 Aug 2009
  • Loc: New Haven, CT

Posted 14 April 2013 - 10:43 AM

The Saturn stencil is interesting, because the background is white too.
Do You draw it at homework or can I find it via www. ?
Are there several variations for the changing pol tilt ?

Bye
Christian


Hi Christian,

I use templates from the website of the Italian Astronomical Union: http://pianeti.uai.i...azioni_visuali. Scroll down until you arrive at Saturn, click to download the template with the right tilt. The page is in Italian but should be easy.

Most templates are for negative tilts, these years I just turn the sheet when I draw. Not a big deal when you digitize everything anyway. A white background is good to render the C ring, satellites or whatever lies outside the ball and the main rings.

Ivano

#13 Uwe Pilz

Uwe Pilz

    Apollo

  • *****
  • Posts: 1001
  • Joined: 16 May 2008
  • Loc: Leipzig, Germany

Posted 14 April 2013 - 11:48 PM

You sketched lots of interesting details at both planets.






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics