Tag: M51

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…


Observing Session: 27, August

The weather has been trying to give me clear skies during the period of darkness for weeks, but not until last night,  has it actually succeded. Unfortunately, it coincided with a 98% illuminated Moon, which completely drowned out hope of seeing any galaxies or faint nebulae.  Looking at my progress through the Caldwell catalogue, I seem to have done all the low lying fruit, so the majority of objects still to observe are guess…


Observing Session: 14, April

Another long spell without cloud. Well that’s not exactly true, as there have been a few clear nights in batches. One forecasted and gave cloudless skies, but with a full moon and lots of high thin stuff, i didn’t even bother to venture out. The other a few weeks later didn’t look to bad, but with lots of early  morning starts, I’ve not been able to stay awake long enough to do anything useful….


Imaging/Observing Session 19, Feb.

Wow. Two clearish nights in a row. Objects: Jupiter, Clavius Crater- The Moon, The Double star Almaak, M51 and two Caroline Herschel objects NGC2204 and NGC381. Session Started 19:27 Seeing: II Slight quivering of the image Transparency: Poor. The Milky way was invisible and only principle Constellations stars were seen below a altitude of 45 degrees Airmass at time of observation: Jupiter – 1.2 , Clavius Crater- The Moon – 1.2 , Almaak – 1.3,  M51 –…