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Astrophotography and Sketching >> Sketching

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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5578392 - 12/19/12 04:36 AM

What I'm also wondering is if I occasionally use my non-dominant eye (left) to observe, if this might also ferret out more details? I've tried this for a few minutes each of my last couple observing sessions.

As of my most recent session, I've also tried viewing with both eyes open while concentrating on the image in my dominant eye (right). The problem with this is that I fear I may be projecting something from the non-"viewing" eye onto the image that my brain is "seeing"...the border between my driveway and lawn, for example.

I'm considering purchasing one of those eye patches ("Aaarrrh, matey") from the drug store which will effectively "blind" the non-viewing eye even though it is open.



-stray-


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5578403 - 12/19/12 04:50 AM

That's a good question. Whatever eye works best for you. I am left eye dominate but observe mainly with my right eye. Dunno why, really, just habit.

Yes, both eyes open is more comfortable. Squinting all the time tends to blur the vision in my other eye making it useless for a while. An eye patch is okay, but wearing glasses makes sketching difficult. Gotta pull it off every time to put my glasses on. A cupped hand over the other eye works just as well, let it stare into the darkness in the palm of your hand to prevent overlapping images. Those overlapping images are too distracting, IMO.

Some folks say to have some ambient lighting. That's probably a good idea - to prevent dark adaption. Trick is, not to allow it to become distracting. Personally, I have ambient light - for once, the neighbors security light is welcome. But, also, I use an eyepiece cup to prevent peripheral distractions. With the other eye relaxed and staring into darkness, Jupiter is the only thing that makes it's way to the brain. Surely that helps.

But, you can try your dominate eye and see if it actually does better. It might. Use both, switch up once in a while. You might even find out one eye is a little better at detail and the other might excel at something else, like color.

If you get a patch, though, you're gonna need bird seed. For the parrot, of course. Just a hassle.


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5583521 - 12/22/12 02:09 AM

Quote:

If you get a patch, though, you're gonna need bird seed. For the parrot, of course. Just a hassle.




A parrot?

Oh, no, Norme, that just would not work. Consider this scenario:

Me on a starry night all leaned over in my chair and glaring at Jupiter through the EP (I have my eye patch on). My pet parrot, Polly, sits nearby on a perch munching bird seed (she’s not allowed to perch on the rig because she makes it quiver; nor on my shoulder because she inevitably poops on my shirt).

Me (thinking aloud): Hmmm, there’s a festoon…maybe two…is that a third on the F limb?

Polly: AWWWK! You don’t see that!

Me (tinkering with the focus knob): Be quiet, Polly. I’m onto something here. Looks like something might be going on in the EZ…is that the EB?

Polly: You don’t see that! AWWWK!

Me (adjusting the RA axis, slightly): Polly, please, you’re distracting me…whoa! Check it out! I think I can actually see the GRS this time!

Polly (flapping her wings): AWWWK! You don’t see that! AWWWK! You don’t see that! AWWWK!

Naw, eye patch or not, a parrot will not work. Incidentally, I do not actually own a parrot named Polly. My cat, Panzer, would shred something like that.



-stray-

Edited by stray1 (12/22/12 03:42 AM)


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5583583 - 12/22/12 04:18 AM

Well, show Polly a cracker and ask her if she want's one. No matter the reply, just tell her she doesn't see it, either.

Take that from me, the Parrot whisperer.

Or, try this. Sometimes girlfriend gawked at my sketches. So, when she implied I didn't see that, I showed her. Her face lit up when she realized there were clouds inside that "blue" belt.


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5584943 - 12/23/12 12:23 AM Attachment (27 downloads)

Finally a clear night. Checked in with Stellarium and saw that the GRS would make an appearance. Spent a few minutes glassing the moon and Eta Cas while waiting for Jupiter to clear the trees.

Then spent about two-and-a-half hours observing, using every combination of EP and Barlow (and without Barlow). Wasn't the greatest of viewing conditions; wasn't the worst. Bright moonlight probably played a role in this.

Did not detect the GRS There was a time or two that I thought “maybe” I could see a darker smear; nothing definite.

What I did observe was a darker band along the south edge of the SEB that marked GRS wake. Did not detect any turbulence in the belt itself. (NOTE: I’ve indicated on the sketch approximate position of GRS per Stellarium at the time that I generated the sketch, but this should not be taken to mean that I actually saw it). What is strange is that in the past I have definitely detected activity in the SEB (it usually appears thinner) caused by GRS; tonight, nothing other than the darker band I mentioned. The SEB appeared solid from limb to limb.

Could maybe see something going on in the NEB. Not sure what it was (if anything). Festoons were very dim. No evidence of the EB. NTB seemed broken up this evening.

Three cups of coffee, a runny nose, and not much else.

Good thing I do not have a parrot. She would have frozen solid.



-stray-


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5585003 - 12/23/12 01:34 AM

The GRS is at system II 190, so good chance the GRS was off the preceding limb. Trailing the GRS at some point, there are features in the NEB. In any case, not sure how prominent the GRS is in more modest apertures. You have seen it?

You're learning to see finer details on Jupiter. And it's best for parrots to be kept indoors this time of year.


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5585051 - 12/23/12 02:41 AM

Quote:

The GRS is at system II 190, so good chance the GRS was off the preceding limb. Trailing the GRS at some point, there are features in the NEB. In any case, not sure how prominent the GRS is in more modest apertures. You have seen it?




Norme,

I've probably messed up my times and dates on this sketch converting from EST to UT (this was one of those times when the UT date changed while EST date remained the same). According to Stellarium the GRS should have been visible from about 20:30-00:30 EST. I went out at 20:30 EST and spent about two and a half hours observing, specifically looking for GRS. When I came inside (due to the cold...brrrr) at approx. 23:45 the GRS had not yet reached the P limb (again, according to Stellarium). It was there, I just did not see it.

I have seen what I believe to be the GRS (and its effects) through the 90mm in better viewing conditions. The moon, though not full, was really lighting up my backyard tonight. Heck, I didn't even need a red flashlight to find my way around. Add to this a really, really light covering of snow on the grass, ambient light off of white siding, lights on in my house and around the 'hood (I usually observer much later) and it does not exactly make for the most famous of conditions.

Meanwhile, an experiment of mine has proved successful. I replaced that awful, thick, sticky, gooey focuser "lube" that came with the scope with my own concoction--petroleum jelly (i.e., Vaseline) mixed with a liberal spritz of Remington gun lube (with Teflon). Minimal backlash and buttery smooth even in sub-freezing temperatures. Was able to get diffraction rings around the Jovian moons (rare for me) with ease. Heck, its almost too smooth. It'll probably have to be replaced with something once the weather warms up again in the spring but, for now, I no longer need a pipe wrench to adjust my focus on these cold winter nights.

I'm not giving up on a positive detection of GRS, but it'll have to wait for better conditions. Meanwhile, Luna seems intent on demanding my attention. Unfortunately, this clear night was an anomaly...rain, clouds, snow coming my way...



-stray-

Edited by stray1 (12/23/12 03:29 AM)


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: stray1]
      #5585056 - 12/23/12 03:07 AM

Major malfunction on my part. The sketch is dated 21-22 Dec 2012...this should actually read 22-23 Dec 2012 (per UT). All messed up...too much caffeine?



-stray-

Edited by stray1 (12/23/12 03:14 AM)


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5585107 - 12/23/12 05:04 AM

Mark, System II at 42 fits better. There are some bright NEB features there. Nicely done.

Pipe wrench...

If Luna calls, that's kind of like mother nature callin. Check it out.


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5586381 - 12/23/12 10:26 PM

Check out the NEB action in these APs by Go and Walker. That is probably what I detected yesterday.

http://alpo-j.asahikawa-med.ac.jp/kk12/j121223z.htm



-stray-


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5586403 - 12/23/12 10:38 PM

Yep, especially Walker's image at bottom. That's a good catch. I caught them, too, a little ahead of that CM.

http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/5577121/page...

Here's some maps, fairly current. They show some NEB activity from about 360 to 40 degrees, system II (second Map.)

http://alpo-j.asahikawa-med.ac.jp/kk12/j121220r.htm

Merry Christmas, Mark.


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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Asbytec]
      #5611367 - 01/08/13 04:31 AM Attachment (14 downloads)

Finally, after nearly three weeks of overcast skies I got some EP time. Unfortunately, by the time I arrived home from work, Jupiter had already set behind the house. After checking with Stellarium I realized that Saturn should be high enough in the E/SE to be worth the time to set up the rig and take a peek. Glad that I did.

This is the first time...ever...in fifty years of trudging the Earth that I have actually seen this object through a telescope. I did not have a lot of time to look this morning and had to wade through ankle-deep crusted snow to find an adequate spot in the backyard to set-up. The 60mm offered a tempting view, but I was unable to get a clear focus with it as I was forced to slew nearly horizontal (meaning that I had to stand on my toes to get a look).

The view through the 90mm was breathtaking! I achieved a clear, clean split between planet and rings, but the view was unsteady as I was forced to stand next to the scope (rather than sit as I usually do while observing). Still, this was an outstanding, memorable experience. Will definitely watching the early morning skies from here on out.



-stray-


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5611430 - 01/08/13 07:10 AM

I remember seeing Saturn for the first time nearly 40 years ago through a Sears refractor. It was stunning. I ran up the street to grab a friend, only to return in time to see Dickie running down the street with my scope - tripod and all. He wanted to spy on his girlfriend and was yelling at us to follow. To this day, I can still see and hear those slow motion cables bouncing and clanging.

Anyway, it is a stunning thing to see. Saturn will take as much power as you can throw at it. When the seeing is steady, Cassini's division should show up, too. The ring tilt looks good enough to show it. The banding on Saturn is not as distinct as Jupiter, but should be visible. Good luck, been waiting for it to rise a bit earlier.


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Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: Stray's Sketchbook new [Re: Asbytec]
      #5611579 - 01/08/13 09:29 AM

Nice, Mark. That is a terrific representation of what Saturn looks like through my 72ED with the 7mm ortho. One of my favorite ways to view is using my 15x85 bino. It's awesome to split the rings from the body at 15x in stable atmosphere. I can't wait to watch you discover the planet as magnifications and perceptions increase this season.

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stray1
sage


Reged: 09/03/12

Loc: SW Ohio
Re: Stray's Sketchbook new [Re: Chopin]
      #5613158 - 01/09/13 05:33 AM

Hi Norme, Jason,

Yep, I'm definitely gonna make some time for this one (Saturn). I cannot wait for a good night/morning when I can sit down and take an extended (hour or so) look!

Thanks for commenting! (even though this first sketch stinks)



-stray-

Ps-- isn't Mars supposed to be available for study this year? I'm thinking that I really need to invest in some planetary EPs.


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: stray1]
      #5613431 - 01/09/13 10:05 AM

Not sure when Mars is due, usually every other year, I believe.

I am totally wrapped up in doubles at the moment, and hope to keep up with your Saturn observations. I will be traveling in the US and will miss Saturn this season.


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Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: Stray's Sketchbook new [Re: stray1]
      #5613458 - 01/09/13 10:31 AM

Quote:

Hi Norme, Jason,

Yep, I'm definitely gonna make some time for this one (Saturn). I cannot wait for a good night/morning when I can sit down and take an extended (hour or so) look!

Thanks for commenting! (even though this first sketch stinks)



-stray-

Ps-- isn't Mars supposed to be available for study this year? I'm thinking that I really need to invest in some planetary EPs.




Nah, it doesn't stink! Quite a good sketch, actually.


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Chopin
Canis Insanus
*****

Reged: 02/03/05

Loc: In the doghouse.
Re: Stray's Sketchbook new [Re: Asbytec]
      #5613483 - 01/09/13 10:48 AM

Quote:

Not sure when Mars is due, usually every other year, I believe.

I am totally wrapped up in doubles at the moment, and hope to keep up with your Saturn observations. I will be traveling in the US and will miss Saturn this season.




I was just playing with Stellarium and it seems Mars starts becoming observable in the pre-dawn hour this summer. If Stellarium is accurate, 7/22/2013 looks like a sub 1º conjunction between Mars and Jupiter. If you have access to a horizon (Eastern, of course) low enough you might catch it. Could make an awesome sketching target.

No Saturn, Norme?!? No travel scope?


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Asbytec
Guy in a furry hat
*****

Reged: 08/08/07

Loc: La Union, PI
Re: Stray's Sketchbook new [Re: Chopin]
      #5613544 - 01/09/13 11:35 AM

Well, naaa...not gonna drag mine along, mount and all. I had to explain to airport officials what my CG5 mount was. It had wires and push buttons, they were suspicious. I showed them the owner's manual.

Saturn, maybe...time permitting.


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