Retired_for_now
08-16-2010, 04:17 PM
Well,
As I said elsewhere. One of the display models of the James Webb Space Telescope needs replacing (three others, I think, still going strong). So, the compulsives kicked in and I decided I needed to get the scale right for the display at the planetarium (I'll use the one that's there already to replace the busted one - what goes around comes around). Hubble is 1:48 and JWST needs to match that to properly show the relative size (sometimes bigger is just better). Of course that gives me a chance (arghhh) to fix a few more inaccuracies based on the latest info posted by NASA (still corresponding with them about adding this model to their education/outreach program - the cosmologists working COBE/WMAP are obviously working on a longer - cosmological? - time scale). The James Webb Space Telescope (http://www.jwst.nasa.gov/public.html)
So, we started with a fairly simple representation from NASA - still lots of parts to craft. The rework does not substantially increase the parts count (important for educational models intended to motivate).
53890
NASA on right - scale is 1:60 based on the primary mirror size, sunshade undersized in proportion.
The first design effort tweaked a few parts and added color from the NASA CAD depictions. The latest batch of artists' representations and pictures allows a few more corrections.
Specifically, a few details on the spacecraft bus will get worked (appears to be solar panels on the sides of the bus and the baseplate is assymetrical); the sunshade enlarged to match the drawings; support beams resized to match the sunshade; solar panel and momentum flap resized and detailed as well; backplane assembly cut down a bit and repainted; graphics added for support structure on the back of the primary mirror; Integrated Science Instrument Module (ISIM) box recolored; and the aft optics module redone.
So, the bus and panels. After enlarging everthing to 125% to adjust the scale, the bus recolor was straightforward. The panels required additional resizing based on the available pictures and some detailing (thank you jagolden for the technique you used on the Big ISS panels).
53891
The original backplane was visually dominant - extending to the edge of the primary mirror. The actual part is a set of box beams with hinged outer sections (three outside mirror segments), a complex cradle to hold the mirrors, and a set of covers over a portion of the works. I wasn't quite up for that much work, so I settled for resizing the backplane so it doesn't dominate the mirror.
53892
Yogi
As I said elsewhere. One of the display models of the James Webb Space Telescope needs replacing (three others, I think, still going strong). So, the compulsives kicked in and I decided I needed to get the scale right for the display at the planetarium (I'll use the one that's there already to replace the busted one - what goes around comes around). Hubble is 1:48 and JWST needs to match that to properly show the relative size (sometimes bigger is just better). Of course that gives me a chance (arghhh) to fix a few more inaccuracies based on the latest info posted by NASA (still corresponding with them about adding this model to their education/outreach program - the cosmologists working COBE/WMAP are obviously working on a longer - cosmological? - time scale). The James Webb Space Telescope (http://www.jwst.nasa.gov/public.html)
So, we started with a fairly simple representation from NASA - still lots of parts to craft. The rework does not substantially increase the parts count (important for educational models intended to motivate).
53890
NASA on right - scale is 1:60 based on the primary mirror size, sunshade undersized in proportion.
The first design effort tweaked a few parts and added color from the NASA CAD depictions. The latest batch of artists' representations and pictures allows a few more corrections.
Specifically, a few details on the spacecraft bus will get worked (appears to be solar panels on the sides of the bus and the baseplate is assymetrical); the sunshade enlarged to match the drawings; support beams resized to match the sunshade; solar panel and momentum flap resized and detailed as well; backplane assembly cut down a bit and repainted; graphics added for support structure on the back of the primary mirror; Integrated Science Instrument Module (ISIM) box recolored; and the aft optics module redone.
So, the bus and panels. After enlarging everthing to 125% to adjust the scale, the bus recolor was straightforward. The panels required additional resizing based on the available pictures and some detailing (thank you jagolden for the technique you used on the Big ISS panels).
53891
The original backplane was visually dominant - extending to the edge of the primary mirror. The actual part is a set of box beams with hinged outer sections (three outside mirror segments), a complex cradle to hold the mirrors, and a set of covers over a portion of the works. I wasn't quite up for that much work, so I settled for resizing the backplane so it doesn't dominate the mirror.
53892
Yogi