NSS Space Forum January 13: James Webb Telescope

NSS Space Forum

The National Space Society and the Huntsville Alabama L5 (HAL5) Society invites you to a free Space forum:

The Webb Space Telescope: The First Light Machine

Thursday, January 13, 202, 8:00 pm to 9:15 pm EST

With Special Guest Dr. H. Philip Stahl, Senior Optical Physicist, NASA Marshall Space Flight Center


On Christmas Day 2021, the Webb Space Telescope (WST) was launched from Arianespace’s ELA-3 launch complex at Europe’s Spaceport located near Kourou, French Guiana, on an Ariane 5 rocket. This was the beginning of its 29-day, million mile journey out to the second Earth-Sun Lagrange point (L2). From L2 the WST will begin its 10-year mission to search for the first luminous objects of the universe to help answer fundamental questions about how the Uuniverse came to look like it does today, including formation of galaxies and protoplanetary systems.

With a 6.5-meter diameter mirror, the WST is the world’s largest space telescope. Dr. Stahl will review the science objectives for the WST and how they drove the WST architecture, e.g. aperture, wavelength range, and operating temperature. In addition to a program status, Dr. Stahl’s presentation provides an overview of the WST’s primary mirror technology development and fabrication status. Take this opportunity to learn more about one of the most exciting and ambitious space science missions ever attempted.

* * * * * * * * * * * * * * * *

Dr. H. Philip Stahl is a Senior Optical Physicist at the NASA Marshall Space Flight Center where he is currently leading a study to mature mirror technologies for a new large aperture UV/Optical/IR telescope to replace Hubble. Previously, he was responsible for developing candidate primary mirror technologies for the WST.

Dr. Stahl is a leading authority in optical metrology, optical engineering, and phase-measuring interferometry. Many of the world’s largest telescopes have been made with the aid of high-speed and infrared phase-measuring Interferometers developed by him. He is a Fellow of SPIE and OSA and past ICO Vice President and was SPIE’s 2014 President. He earned his Ph.D. in Optical Science at the University of Arizona in 1985.


Register no later than Jan 13 at 7 pm EST

Past NSS Space Forums and Town Halls may be viewed here.


Picture of National Space Society

National Space Society

2 thoughts on “NSS Space Forum January 13: James Webb Telescope”

Leave a Comment

future 1

Don't Miss a Beat!

Be the first to know when new articles are posted!

Follow Us On Social Media


Give The Gift Of Space: Membership For Friends and Family

Book Review


ISDC 2024:

International Space Development Conference May 23rd-26th, 2024


Image of Kalpana One space settlement courtesy Bryan Versteeg, spacehabs.com $32,000 in Cash Awards Given for Best Space-Related Business Plans — Deadline March 1, 2024

Category: Nonfiction Reviewed by: John J. Vester Title: Nuclear Rockets: To the Moon and Mars Author: Manfred “Dutch” von Ehrenfried Format: Paperback/Kindle Pages: 270 Publisher:

Partially Successful Flight Reached Space and Demonstrated New “Hot Staging” System The National Space Society congratulates SpaceX on the second test of its Starship/Super Heavy

Ad Astra, the NSS quarterly print, digital, and audio magazine, has won a 2023 MARCOM Gold Award. The awards are given yearly for “Excellence in

By Jennifer Muntz, NSS Member Coordinator On October 10th, an inspiring breakfast event took flight at the Center for Space Education at the Kennedy Space

By Grant Henriksen NSS Policy Committee Benefit sharing is a concept that refers to the distribution of benefits derived from the exploration and use of

People residing and working in space, space settlements, or on long-duration space flights will need to produce infrastructures and food to maintain healthy lifestyles. The

Image: Artist’s concept of the Blue Moon lander. Credit: Blue Origin. Second Human Landing System Contract Encourages Competition and Innovation The National Space Society congratulates