Norme 150mm MCT f/13, 31% CO Yellow Zone "People say I'm in denial. I disagree."
Eric 6" f/6 Parks Newtonian 10x50 Bushnell Binocs CN Sketch Gallery||MinDat Mineral Gallery
Quote:Jason, I hope to see more of your work. Glad I picked up sketching last year, it's rather an enjoyable aspect of our hobby. Personally, I prefer it to imaging - in that it's a very manual labor of love. And it requires patients and actually teaches us to look closer at our subject...preferably in good seeing. (Imaging is a labor of love, too, and require patients and a different skill set, of course. Anyway...)Look, we have all seen Jupiter in Ant IV seeing. What can I say, you nailed it. What's striking, however, is you mentioned some mild undulation in the NTB under those conditions. Wish I could comment on them, but it speaks to what you would have seen in better conditions. I am not familiar enough with Jupiter at various times UTC to know what CM you are observing. We could look it up. But, surly those are festoons. There seems to be a lot of them this season.Something struck me, a question, one night under similar conditions. Does seeing affect color? Probably...just not sure how. Anywhooo...I find both polar regions essentially featureless, too. On occasion, there are some faint bands. But you noted some darkening, that's incredible, actually. There are some, but I found it takes very good moments of seeing just to glimpse them.On a method, I dunno. Your pencil work looks quite good. I am sure you will fall into a suitable method. I use PC paint programs because I do not have a scanner at home. When I was working, scanning was easy...but not at 2AM when I am trying to get my sketch up. So, I fell into using PC paint programs. You will find a method. I hope. Criticism? A dozen sketches in six years is not enough, especially for someone with 35 years of illustrating experience. If you wish, you can calculate the CM here.http://www.arksky.org/tools.htm
Quote:Looks great Jason, nothing feeble there at all.
Quote:The reason I asked about color is because the Festoons are quite blue, stunning actually. But seems only when the seeing settles. Color in a 6" is very unsaturated almost grey tone. But it is there. Just a thought having coffee observing Jupiter the other night.Yes, Central Meridian. I guess it just helps pin down where we were looking. Actually Jupiter has three measurements, much to do with the varying speeds of rotation in different latitudes, as I understand it. It's really not necessary to put it on there. I put them in sometimes, if someone wants a reference.Nuther question...you mentioned the moon being close. Jupiter is darn close tonight. Really the moon didn't seem to bother it, but I am sure it must. You got extra photons coming in on top of those from Jupiter. There should be some contrast loss, even if not detectable?A 10" GEM mounted...sweet, Jason. Just got back form watching the GRS rotate over the preceding limb. Might sketch tomorrow. Tired to glimpse the Cat's Paw, but settled for the 3 Astronauts.
Quote:hi Jason,nice work with 110mm !The transit looks great.Bye Christian
Quote:Constructive criticism is welcome
Quote:Hello Jason,This is a fine sketch of Jupiter. Always nice to catch a Moon shadow on the clouds.Frank
Quote:Jason, don't get me started on baffles. (Long story.) Laminar airflow? Move to the tropics. Or Miami is supposed to have it, too, so you're pretty much tropical. I am in the far east at 16 degrees north. Dry season rules with 8/10 seeing or better most nights (at least last year.)
Quote:Jason.This sketch is fabulous. Look so real and the transit is excellent. You are very talented, pleasse keep going with more sketches of the planet. Eager to see Saturn.Andre.
Quote:Far from feeble my friend... A lovelly rendition and some interesting comments to boot. Keep up the good work!
Quote:Looks really fine to me.Quote:Constructive criticism is welcomeNext time you can use a template that isn't a perfect circle.
Quote:One thing I am trying to do is to sketch Jupiter's preceding limb, first. Since Jupiter rotates faster than I can sketch, it helps to get those details locked down while placing any details toward following edge. It might be cheating, but as the following details rotate into a better view on the meridian, you can tune them up while your preceding limb detail disappears.