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Saturn 06.08.13

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#1 Sol Robbins

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Posted 09 June 2013 - 01:01 AM

Had great seeing conditions for this Saturn observation.

I used 4H and HB pencils.

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#2 Jef De Wit

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Posted 09 June 2013 - 04:10 AM

That's a lot of detail :applause:

#3 Andrev

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Posted 09 June 2013 - 05:07 AM

That's a great work of fine details. I like very much the bottom bands with all the very fine details into them. Congratulation.

Andre.

#4 dweller25

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Posted 09 June 2013 - 11:08 AM

Wow, some fantastic detail in those bands

#5 Sol Robbins

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Posted 09 June 2013 - 11:27 AM

Thanks!

#6 frank5817

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Posted 09 June 2013 - 01:02 PM

Sol,

Wonderful to see one of your planetary sketches again.
This one is a superb capture.

Frank :)

#7 Sol Robbins

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Posted 09 June 2013 - 03:46 PM

Thanks Frank. Always a pleasure to what you are up to as well.

#8 chrisrnuttall

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Posted 09 June 2013 - 04:05 PM

that is a lot of detail Sol.

#9 Sol Robbins

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Posted 09 June 2013 - 04:47 PM

Thanks Chris,

Seeing was excellent. I broke some pencil points during this one, so I couldn't really finish what was started on the rings.

Best,

#10 azure1961p

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Posted 09 June 2013 - 06:51 PM

Sol,

Nice work. Tonight the Northeast looks like it could have at least good seeing anyway. Nice to see you post again.

Pete

#11 kenrenard

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Posted 09 June 2013 - 07:50 PM

Sol,
Beautiful work. Had to read what a Chromacor was. New one on me.

You sure have captured a nice bit of detail.


Bravo


Ken

#12 Tommy5

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Posted 09 June 2013 - 08:45 PM

Great sketch of Saturn, nice to see you doing planetary sketches again.

#13 Sol Robbins

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Posted 10 June 2013 - 06:57 AM

Pete, Ken and T5,

Thanks.

#14 JimPie

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Posted 10 June 2013 - 10:04 AM

Jeez Sol,
I can't count all those bands. Beautiful!

#15 niteskystargazer

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Posted 10 June 2013 - 10:07 AM

Sol,

Very good sketch of Saturn :).

CS,KLU,

:thanx:,

Tom

#16 Sol Robbins

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Posted 10 June 2013 - 11:26 AM

Thanks again to everyone. The image above on my computer screen is pretty close to the actual size of my sketch.

I thought I would take the liberty of resizing this same sketch to represent something closer to an eyepiece view. My reason is that when sketching in the field as I do, a sketcher has to decide how to render details seen as readable. I elect to decide what I do in terms of pencil technique done on computer copy paper very quickly. I just hope things look pretty close to what I think I see through the eyepiece.

Best,

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#17 Asbytec

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Posted 10 June 2013 - 08:45 PM

Sol, it's apparent you had a wonderful night with Saturn. That's what counts. I am curious about the number of belts rendered, though. You gotta sketch what you see, no doubt. To do otherwise would be dishonest, IMO. It's a wonderful observation and a great sketch.

#18 Illinois

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Posted 11 June 2013 - 08:06 AM

Very nice! Draw rings is not easy! Good job!

#19 Sol Robbins

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Posted 11 June 2013 - 08:43 AM

Many thanks!

#20 markseibold

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Posted 13 June 2013 - 03:30 PM

Sol -

Beautiful sketch work by you, as always. :bow: Sorry I am not participating here more lately as I miss allot of great posts by all of you.

I was curious if I may ask, the format size of your sketch. Also, I am impressed that you are using only a 6 inch reflector. I use an old Coulter Odyssey 10.1 inch never collimated f/4.5 bought in 1987, with best eyepiece optics as 9.7mm super-plossl and reasonably good quality 6mm Othoscopic, but that only renders me a 120x and 192x view.

I saw your mention of a 4mm eyepiece optics but not knowing your f/ratio, I assume it is a f/8 and that figures that your 4mm would produce about 305X power. With good seeing conditions your telescope view must be amazing for Saturn. This also indicates what a good 6 inch Newtonian can reveal.

I look forward to seeing more observations and sketches from you. Thanks much for posting.

Mark Seibold

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#21 Sol Robbins

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Posted 13 June 2013 - 10:17 PM

Thanks Mark,

I use a couple of scopes. For this sketch I used a 6" refractor @ f/8. I also use a 6" newton, an old Criterion @ f/8.3. They both can easily support 50x/aperture inch. I also have an excellent 3" prototype achromat refractor design by the great Tom Back.

I had excellent seeing with Regulus showing holding steady for a second or two followed by a very slow undulation of the same time length alternating back and forth at 375x. Seeing conditions is everything.

My format has the globe at ~2" in diameter.

Best,






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