Home › Forums › Land in Focus – Basics of Remote Sensing › Passive Imaging Techniques Land in Focus – Basics of Remote Sensing Passive Imaging Techniques Posted by EO College on September 30, 2021 at 3:17 pm Helena van Mierlo replied 3 months ago 2 Members · 2 Replies 2 Replies Helena van Mierlo Member June 29, 2023 at 4:18 pm To be consistent, for planetscope it would be proper to indicate 2013 as the first launch, and mention that it is a constellation of 130+ satellites. Helena van Mierlo Member June 29, 2023 at 4:02 pm In the series of satellites, SPOT 7 should say SPOT 1-7 as the launch date of SPOT 1 is used, and the satellite is mentioned as ‘active’. Log In to Reply Log in to reply. Log In to Reply Start of Discussion 0 of 0 replies June 2018 Now