Talk:James Webb Space Telescope sunshield
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Cost
editIf someone finds more information about the cost it would be interesting to include it. --Vasilis Theofylaktopoulos (talk) 14:37, 16 December 2021 (UTC)
Contested deletion
editThis article should not be speedy deleted because its an important part of the JWST program and will be expanded. Patience... Fotaun (talk)
Hi @Fotaun: you must not remove the tag yourself. thank you. --Domdeparis (talk) 08:55, 7 December 2016 (UTC)
Readability
editAwhile back this was tagged as being too technical, and while I personally tried to take some steps to make it easier to read hopefully in the future it can be "translated" so its more easy to understand. Fotaun (talk) 17:17, 20 January 2017 (UTC)
- Much more readable now! Good job! Domdeparis (talk) 17:49, 20 January 2017 (UTC)
- This reads like it was written by a 9 year old now. It's embarrassing and unencyclopaedic. 131.251.254.154 (talk) 15:55, 8 September 2017 (UTC)
This article still has many readability issues and just doesn't make a lot of sense. Why does it exist?
editSeriously, many people will be looking at this article closer to launch and it still has a lot of issues. At least the main article is really good. Shouldn't this information be consolidated into a subsection of the main JWST article? If it shouldn't be, this article still needs intense editing.
Check numbers related to area, power received and passed by the sunshield
editSome numbers are in error. The sunshield is 21m x 14m; its (diamond shaped) area is therefore about 150 squared meters. The given powers are incorrect as well. The solar constant is about 1.4 kW/m2, so "it will receive about ***200*** kilowatts of solar radiation". Reference [5] http://www.stsci.edu/jwst/overview/design/sunshield is a broken link. Check "will pass 23? milliwatts to the other side" as this number also seem in error. Marmetlouis (talk) 19:03, 15 May 2020 (UTC)
Emissivity
editWe need an explanation as to why the colour of the shield facing the sun is not silver but dark, if not black. I believe that this is because of the high emissivity of black and am assuming that the inside colour of the first sheet is silver, which having a low emissivity will not transmit heat to the second sheet. This is counterintuitive, most people would assume a reflective surface not an absorbing one. I don’t feel confident to write this up; I wonder if somebody else might articulate it better than I. Ex nihil (talk) 21:48, 2 March 2022 (UTC)
A tiny suggestion
editI just wanted to give a commonplace suggestion for the "Timeline" section: 800,000 km (500,000 mi) instead of 0.8 million kilometers (500,000 mi). – Hamid Hassani (talk) 21:31, 27 September 2023 (UTC)