plonq: (Twilight Sparkle Clapping Mood)
[personal profile] plonq
Our four-day weekend is grinding to a close this evening - but at least I can console myself tomorrow with the knowledge that it will only be a 4-day work week.

In a way I am almost looking forward to heading back to the office tomorrow so that I can get a bit of a break - this was a very busy and eventful weekend, starting with the Roger Waters concert on Friday and ending with an impressive chore list that had us running around for much of today.

20120601

[Since I did not get around to posting this last night...]

Today we went up to the park and caught the transit of Venus along with a couple of thousand other locals.
20120605

There were a few dozen binoculars, cameras, and telescopes ranging from amateur to semi-professional set up for the crowds. While some folk were content to stand in long lines for a glimpse into the eyepiece of the larger telescopes, people were ignoring the smaller telescopes - many of which were set up to project the image for easier viewing.

A couple of the people manning the lonely smaller telescopes commented on that, and I snidely replied, "Yes, because you need a huge telescope in order to properly view the largest object in the solar system which is also comparatively close."

This was the projected image from one of the smaller telescopes. The sun put out a few nice sunspots for our viewing as well. I played a bit dumb with the owner of this telescope when I overheard somebody ask him if there were others who might be getting a better view of the event. He said that people on the west coast, and/or in Hawaii would be getting a better view because they could watch the entire event. I chimed in and said, "Also, they're closer."

He corrected me in a long-suffering tone that suggested he had heard his fair share of stupid that day, but I dug in stubbornly. I pointed across the field toward the setting sun and said, "If we crossed this field, we would be closer. It may not matter much in the cosmic scale of things, but people further west - especially where it's still noon - are closer to the sun than we are right now."

He reluctantly agreed, but I think he figured out by then that I was pulling his leg. He seemed honestly impressed when I added, "It's also a little humbling when you stop and think about it. That planet is almost as big as ours, yet it is still just a little dot against the sun. It kind of puts things into scale, doesn't it?" He mentioned that of all the things he had heard people say today, I was the first to use that word to describe the event. That made me sad.

At my insistence we took along some binoculars and paper so that we could project our own image of the sun. It was laughably primitive compared to the other equipment there, but laugh all you want because it worked.
Venus Transit Gheto

As we were leaving at around 8:30, people were still flocking in. I did not notice the kid in the astronaut costume until [livejournal.com profile] atara pointed him out later.
Sun Watchers

Here is a goose.
Duck

Date: 2012-06-07 03:04 am (UTC)
From: [identity profile] dakhun.livejournal.com
Yes, because you need a huge telescope in order to properly view the largest object in the solar system which is also comparatively close.

Well, yes but what if you wanted to do something other than look at the whole disk of the Sun at the same time, like narrowing your focus to a certain part of it? Details? Perhaps have a sunspot group fill the field of view within a matrix of granules rather than be one or two dots with some barely resolved smudges nearby. Or, for the transit, what if you wanted to see first and second contact the second they occur rather than not being entirely sure of it until a minute later? Well, that's when a larger telescope comes in handy. Don't knock it till you've tried it. Don't deny yourself the education and experience just because you have preconceived ideas that the only purpose of the larger scopes is to attract people's interest.

Date: 2012-06-07 03:38 am (UTC)
From: [identity profile] plonq.livejournal.com
I think perhaps you misread me a bit. I am glad that people lined up and waited 20+ minutes to look through the 8" telescopes because it freed up the 6" ones that gave an equally good experience for the rest of us.

The people manning the scopes found it equally amusing.

I did check one of the larger scopes when we first got there and they weren't quite as busy. They showed no more detail than the smaller ones. The only different in the viewing experience was the length of the queues.

Date: 2012-06-07 04:56 am (UTC)
From: [identity profile] dakhun.livejournal.com
I cannot misread what isn't there. 6" and 8" are almost though not exactly the same, yes. But you did not define large and smaller, which leaves it up to the various experiences of the reader to interpret. When I think of a "smaller" telescope to look at the Sun with, I am not thinking 6", I am thinking more along the lines of something in the 90mm to 4" range, which is just fine for viewing the whole disk of the Sun. Also, 6" is a bit dangerous to do eyepiece projection with, which reinforced my notion that you were talking of something smaller than that. Even with a 4.25" aperture doing eyepiece projection you tend to burn the coatings off your eyepiece, and yes I've done that with a telescope that size in the past. For the transit yesterday, I had my 8" and my 5" out, as well as a 90mm, so I have done a very recent comparison of what you see versus telescope size. For looking at the whole disk of the Sun, they were more or less the same. But for looking for finer details, they were nowhere near equivalent.

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