David Swan Profile Topics Started Replies Created Engagements Favourites Search topics: Forum Topics Started Viewing 20 topics - 21 through 40 (of 41 total) ← 1 2 3 → Topic Voices Posts Last Post Telescope control Started by: David Swan in: Telescopes 1 1 5 years, 4 months ago David Swan 2019 EA2: close approach Started by: David Swan in: Asteroids 2 3 5 years, 5 months ago David Swan M51 Started by: David Swan in: Deep Sky 3 4 5 years, 5 months ago Nick James Tricolour G magnitudes / utility Started by: David Swan in: Variable Stars 2 2 5 years, 5 months ago Andy Wilson Sky and Telescope 1 2 Started by: David Swan in: General Discussion 19 29 5 years, 6 months ago Nik Szymanek C/2018 Y1 (Iwamoto): visual obs and imaging Started by: David Swan in: Comets 2 2 5 years, 6 months ago Peter Carson NASA InSight Started by: David Swan in: Mars 2 3 5 years, 8 months ago David Swan Transient location Started by: David Swan in: Variable Stars 4 12 5 years, 11 months ago David Swan Heads up: nice NEO pass Started by: David Swan in: Asteroids 2 6 5 years, 11 months ago Nick James C/2017 S3 Started by: David Swan in: Comets 3 11 6 years ago Nick James Royal Observatory Greenwich Started by: David Swan in: Telescopes 2 3 6 years, 1 month ago David Swan Transient 2018bsr Started by: David Swan in: Deep Sky 2 4 6 years, 2 months ago Robin Leadbeater 2010 WC9 Started by: David Swan in: Asteroids 5 7 6 years, 3 months ago Alex Pratt Question: proper motion of star, solar system object, artefact or other? Started by: David Swan in: Variable Stars 2 3 6 years, 3 months ago David Swan Introduction to spectroscopy 1 2 Started by: David Swan in: Spectroscopy 5 24 6 years, 6 months ago David Swan C/2017 T1 Started by: David Swan in: Comets 3 6 6 years, 9 months ago David Swan 2012 TC4 Started by: David Swan in: Asteroids 2 2 6 years, 10 months ago Neil Morrison Insight Astronomy Photographer of the Year (2017) Started by: David Swan in: General Discussion 2 2 6 years, 11 months ago Nick James Artificial satellite Mayak Started by: David Swan in: General Discussion 4 9 7 years ago David Swan Interpreting star charts and images Started by: David Swan in: Deep Sky 6 11 7 years ago David Swan Viewing 20 topics - 21 through 40 (of 41 total) ← 1 2 3 →