John Coffin Profile Topics Started Replies Created Engagements Favourites Search topics: Topics Engaged In Viewing 11 topics - 21 through 31 (of 31 total) ← 1 2 Topic Voices Posts Last Post Software for guiding on a slit Started by: Mr Jack Martin in: Spectroscopy 5 7 5 years, 7 months ago Mr Jack Martin What wavelength error is acceptable with an Alpy? 1 2 3 Started by: John Coffin in: Spectroscopy 5 53 5 years, 8 months ago Robin Leadbeater What altitude for reference star? Started by: John Coffin in: Spectroscopy 3 5 5 years, 8 months ago John Coffin Unable to calibrate a spectrum in ISIS Started by: John Coffin in: Spectroscopy 2 19 5 years, 9 months ago Robin Leadbeater X Per – Photometry and spectroscopy requested Started by: Gary Poyner in: Variable Stars 4 8 5 years, 10 months ago Robin Leadbeater New Atik 460, does it have too many hot pixels? Started by: John Coffin in: Spectroscopy 3 6 5 years, 10 months ago John Coffin Psi Persei, emission lines in Fe II ? Started by: John Coffin in: Spectroscopy 5 9 6 years, 4 months ago John Coffin DSLR spectra Processing in ISIS Started by: John Coffin in: Spectroscopy 2 8 6 years, 5 months ago John Coffin Finding/Guiding with a Lodestar Started by: Tony Rodda in: Spectroscopy 5 10 6 years, 5 months ago John Coffin How do you find your target? Started by: John Coffin in: Spectroscopy 9 18 6 years, 6 months ago Mr Jack Martin Best camera for Alpy 600? Started by: John Coffin in: Spectroscopy 3 4 6 years, 8 months ago John Coffin Viewing 11 topics - 21 through 31 (of 31 total) ← 1 2