Took the 40D out for a couple of hours last night as it was clear – clear but very moist air, so moist I packed up at midnight as it was almost fog. Used the 17-55mm zoom at 55mm with the 77mm IDAS filter (SCS Astro) and got most of Cygnus in the frame. Had to put the air blower on the IDAS after every 4-minute sub to keep the dew off. Ended up with 12 x 4-minute subs which look half reasonable. As my main computer decided to pack up today I won’t be able to get this data to Noel until the thing gets fixed. Today has not been a good day!!
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