Lunar exercise using clay and what else??
Posted 30 July 2009 - 09:58 PM
We are going to do the same thing in a conference in NJ but also make them sketch what they see when they actually observe the moon (with either a 4 inch refractor or an 8 inch SCT).
Has anyone done anything similar to his exercise and tried using any other material...wet sand, dough, or anything else.....and what were the pluses and minuses??
We are thinking of using a picture of a galaxy then having them try to recreate it using cotton (combination of cotton balls and those ball pulled apart to make strands. It is all to give them a taste of going further in their seeing of an object than just a guick glance. Anyone ever tried something like this or used any other material?
Posted 30 July 2009 - 10:41 PM
Rich introduced something like that to use a few years ago. Here's the link if you'd like to look over what he did.
Some benefits of it could be:
1. Really studying the objects you're creating, heights, depths, central peaks, crater walls, subtle unevenness of the terrain, etc.
2. Practice calculating central peaks on the crater's you create? Or taking even a step further and actually trying to get the estimated scale right on the whole sculpture.
3. Take to star parties for the public to explain the terminator and how it affects the views over a short period of time.
And here's my attempt at using the clay after Rich's tutorial.
link to clay crater . I always meant to have another go at it, only at the eyepiece, but never did. Someday, it would be pretty fun to do so.
Anyway, hope that helps with your project.
Posted 02 August 2009 - 02:58 AM
Consider this wild coincidence: I hadn't given much thought to creating a clay sculptural sketch (the last one I did was several years ago) until last week when I suddenly got the bug to go get some modeling clay and have another go at it. I was out doing the observation and when I finished with the sculpture, I was amazed when I visited the Sketching Forum to find that Roland had written a post asking about this technique!
You can find my post about the modeling clay sculpture of Archimedes and environs created the night Roland made this post in the Lunar Observing Forum.
Erika, those are excellent points summing up the value of creating these sculptures. Besides that, it is one of the most interesting and stimulating things I've ever done at the eyepiece of a telescope.
Posted 02 August 2009 - 09:13 AM
Posted 04 August 2009 - 10:02 PM
How about the galaxy formation with cotton or the like...anyone tried it??
Posted 04 August 2009 - 11:17 PM
Posted 05 August 2009 - 07:56 PM
Posted 05 August 2009 - 10:02 PM