Monthly archives: April, 2020

NGC 5457 – M101

Session Data Date:  31/03/2020  Time:  21:50 – 22:45 UT Seeing: II Mostly Stable, Transparency: Mostly Clear, Temp:3.1C, Air Pressure: 1028mb, Humidity: 75%, Dew Point: 0C, Wind Speed: 8mph Scope: TMB 80mm APO Refractor at f/4.8  Camera: ZWO ASI 1600MM Pro,  No filter, Dark subtracted, No Flats. I guess I’m safe to say that this is the first true first light image for the new camera setup. Clear skies, a bit of a breeze and a 7 days old Moon….


NGC5194 M51

Session Data Date:  02/04/2020  Time:  21:40 – 23:44 UTSeeing: II Mostly Stable, Transparency: Clear, Temp:3.9C, Air Pressure: 1020mb, Humidity: 88%, Dew Point: 3.9C, Wind Speed: 5mph Scope: TMB 80mm APO Refractor at f/4.8  Camera: ZWO ASI 1600MM Pro,  No filter, Dark subtracted and Flat fielded. Still more testing tonight. A stack of 53 x 60 sec lights. I didn’t shoot any flats at the time, but realising that I had not touched the camera for a few weeks, that…