Return to the Cloudy Nights Telescope Reviews home pageAstronomics discounts for Cloudy Nights members
· Get a Cloudy Nights T-Shirt · Submit a Review / Article

Click here if you are having trouble logging into the forums

Privacy Policy | Please read our Terms of Service | Signup and Troubleshooting FAQ | Problems? PM a Red or a Green Gu… uh, User

Astrophotography and Sketching >> Sketching

Pages: 1
CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Uranus Observation (November 16, 2010)
      #4218227 - 11/30/10 01:52 AM Attachment (64 downloads)

I made an observation of Uranus on November 16, 2010 (02:00 U.T.; CM 234.5*, De 9.1*, Ds 11.4*, 5.8m, 3.6") using my 9-inch (23-cm) F/13.5 Maksutov-Cassegrain (310x, S: 6-7/10, and T: 4/6). The preceding and following limbs (circumpolar and temperate latitudes) exhibited a brightening (7/10) whereas the equatorial region appeared dusky (4/10) and irregular. These features were more easily noted when the seeing steadied for moments at a time. The best of luck in your own observations of Uranus.

A digital image produced in Pixelmator.

Carlos


Post Extras: Print Post   Remind Me!   Notify Moderator  
george golitzin
Carpal Tunnel
*****

Reged: 02/24/06

Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4218315 - 11/30/10 04:02 AM

Wow, a very nice observation. I have never seen detail on Uranus. Perhaps not thinking there was any to be seen, I haven't spent a lot of time observing it.

Thanks for the sketch, you've inspired me to take a closer look.


Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Uranus Observation (November 16, 2010) new [Re: george golitzin]
      #4218317 - 11/30/10 04:22 AM

George,

Thank you for the compliment on my Uranus observation. Uranus is not an easy object to observe. Faint albedo features (as I have recorded) are visible at times over it's pastel olive-green (or teal) disk. Adequate aperture (typically >6 inches (15 cm); although some observers have detected detail using apertures down to 4 inches (10 cm)), diffraction-limited optics, steady seeing (atmospheric) conditions, and patience on the part of the observer are all required for the detection of albedo features (if any are visible) over this far member of the Solar System. The best of luck in your own observations of Uranus.

Carlos


Post Extras: Print Post   Remind Me!   Notify Moderator  
Jef De Wit
Carpal Tunnel


Reged: 03/06/09

Loc: Hove, Belgium
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4218371 - 11/30/10 06:19 AM

It must be impressive to see detail on Uranus. Good work Carlos!

Post Extras: Print Post   Remind Me!   Notify Moderator  
Heidescoper
sage


Reged: 11/21/10

Loc: Niedersachsen, Germany
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4218390 - 11/30/10 06:51 AM

Carlos,

great cinema!
So many and different contrasted details - wow!


CS
Christian


Post Extras: Print Post   Remind Me!   Notify Moderator  
niteskystargazer
Carpal Tunnel
*****

Reged: 10/05/09

Loc: 41-43'-28" N 87-42'-39" W
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4218606 - 11/30/10 10:05 AM

Carlos,

Very nice sketch Uranus

CS,KLU,

,

Tom


Post Extras: Print Post   Remind Me!   Notify Moderator  
Mentor
professor emeritus


Reged: 09/30/10

Loc: Ontario, Canada
Re: Uranus Observation (November 16, 2010) new [Re: niteskystargazer]
      #4218671 - 11/30/10 10:47 AM

Beautiful. There is not much else out there that will ask you to use that colour in your sketching.

Post Extras: Print Post   Remind Me!   Notify Moderator  
frank5817
Postmaster
*****

Reged: 06/13/06

Loc: Illinois
Re: Uranus Observation (November 16, 2010) new [Re: Mentor]
      #4218745 - 11/30/10 11:30 AM

Carlos,

A most impressive capture of distant Uranus.
Even at 310x it would take much skill to capture the detail you have recorded.
Wonderful.

Frank


Post Extras: Print Post   Remind Me!   Notify Moderator  
proud uncle
Carpal Tunnel
*****

Reged: 01/22/07

Loc: Central Texas
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4218946 - 11/30/10 01:25 PM

Great sketch, Carlos! I agree with others -- more detail than I've ever seen on Uranus. I just had a couple questions.

Did you initially do a rough sketch using pencil, then scanned it and digitally added color and detail?

Are the preceding and following limbs the polar regions, with the darkened band running from top to bottom being the equatorial region?

Thanks again for sharing!


Post Extras: Print Post   Remind Me!   Notify Moderator  
astronz59
sage


Reged: 09/15/10

Loc: Auckland, New Zealand
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4219084 - 11/30/10 02:25 PM

Outstanding, Carlos! Your observation and artistic abilities never cease to impress!

Post Extras: Print Post   Remind Me!   Notify Moderator  
rolandlinda3
Post Laureate
*****

Reged: 01/24/06

Loc: Crozet VA 22932
Re: Uranus Observation (November 16, 2010) new [Re: astronz59]
      #4219175 - 11/30/10 03:08 PM

Carlos, excellent observation and sketch.

Post Extras: Print Post   Remind Me!   Notify Moderator  
hbanich
Pooh-Bah
*****

Reged: 06/17/05

Loc: Portland, Oregon
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4219344 - 11/30/10 04:31 PM

Holy smokes - that's more detail than I often see on Mars! Nice sketch as always Carlos, and I suspect your eyesight is a little sharper than most too.

Post Extras: Print Post   Remind Me!   Notify Moderator  
ericj
professor emeritus


Reged: 02/17/05

Re: Uranus Observation (November 16, 2010) new [Re: hbanich]
      #4219441 - 11/30/10 05:10 PM

Wonderful sketch and report Carlos. You saw a lot of fine detail.

Best,

Eric


Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Uranus Observation (November 16, 2010) new [Re: ericj]
      #4222623 - 12/02/10 02:18 AM Attachment (26 downloads)

Thank you all very much for the very kind compliments on my Uranus observation and planetary observing/sketching skills. I was fortunate to have been able to see such detail over this far pastel green member of the solar system.

I made my Uranus observation directly unto a template that I made in my computer. It is acceptable to scan a pencil (graphite) sketch and then add color and detail as noted in the eyepiece.

The bright regions are close to the poles of the planet and the dark band is roughly parallel to the equator. I have provided a modified screen shot of Uranus as produced by WinJUPOS 8.3 ( http://grischa-hahn.homepage.t-online.de/astro/winjupos/index.htm ). The north pole of Uranus is physically below the orbital plane of the planet (axial tilt of 97.8*). I hope that it helps.

The best of luck in your own observations of Uranus.

Carlos


Post Extras: Print Post   Remind Me!   Notify Moderator  
mike174
scholastic sledgehammer


Reged: 01/04/05

Loc: Central, NJ
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4226906 - 12/03/10 10:43 PM

Carlos,

How long did you observe before you detected those features?

Mike


Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Uranus Observation (November 16, 2010) new [Re: mike174]
      #4227233 - 12/04/10 03:14 AM

Mike,

I noted the albedo features over Uranus over the initial fifteen to twenty minutes of observing then continued to observe it for another thirty minutes waiting for moments of steady seeing to confirm them. As I pointed out previously, albedo features over Uranus are not always visible. The best of luck in your own observations of Uranus.

Carlos


Post Extras: Print Post   Remind Me!   Notify Moderator  
dweller25
Pooh-Bah


Reged: 08/30/07

Loc: Lancashire, UK
Re: Uranus Observation (November 16, 2010) new [Re: CarlosEH]
      #4227734 - 12/04/10 11:39 AM

Carlos, I had a look at Uranus at opposition in my 5" refractor at x240 - it was tiny, so I know how much skill it takes to see those albedo features, very well done.

Post Extras: Print Post   Remind Me!   Notify Moderator  
CarlosEH
Postmaster
*****

Reged: 01/19/05

Loc: Pembroke Pines, Broward County...
Re: Uranus Observation (November 16, 2010) new [Re: dweller25]
      #4228490 - 12/04/10 05:35 PM

Dweller,

Thank you for the compliment on my Uranus observation. Your Jupiter observations were excellent showing the SEB Revival (Disturbance). The best of luck in your future observations.

Carlos


Post Extras: Print Post   Remind Me!   Notify Moderator  
Pages: 1


Extra information
1 registered and 1 anonymous users are browsing this forum.

Moderator:  cildarith, JayinUT, WOBentley 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled


Thread views: 1935

Jump to

CN Forums Home


Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics