[rcheshire (Rowland)]

2.5 hours standing in the cold - street lights, moonlight, neighbours lights and headlights.

The technical stuff. A stack of 20 frames out of 32, approx 1.8 hours. The longest frame was 9 mins - unguided, with several at 7 mins, 6 mins, 5 mins, 4mins, 3 mins and 2 mins.

ES 80, Canon Kiss F, Takahashi EM-200B - no fringing - focus was as sharp as could be with a mask. Tracking was very good unguided, even over 9 mins.

Pixinsight - Calibrated raw files with master dark only - histogram correction, cropped to remove the dew spots (at least I think that's what they were), ACDNR noise reduction, saved file as 32 bit floating point .fit then batch converted to .jpeg

Second run alongside

The dreaded vertical stripes are difficult to get rid of.