EAA Observing Session: 3, September04/09/2023
Astronomy

Session Data

  • Date:  03-09-2020
  • Time:  19:50 – 23:42 UT
  • Seeing: II. Good – Slight
  • Transparency: III. Clear with slight haze.
  • Temp: 18.1 C,
  • Air Pressure: 1025mb
  • Humidity: 91%
  • Dew Point: 16.7C
  • Wind Speed: 10mph

Scope: Altair 250mm RC f/5.3  Camera: ZWO ASI 183MM , Subtracted Darks but no Flats.

NGC6254

Being Observed as NGC6254 This globular really looks asymmetric. Th central core appears to be offset slightly towards the SE. The transition between it and the NW side is a fairly straight border line about 1.6 arc/min long.

NGC4244, Caldwell 26

This being observed as Caldwell 26 Frame rotated 252 degrees, North to the 8 o’clock. Very long and thin. You can make out the central core, which is almost stellar. With the transparency being so poor I cannot see any central dust lane, that is normally seen in images. Transparency starting to deteriorate after just 9 x 60sec subs in the stack.

NGC5195 and NGC5194

Observing this as NGC5195 & NGC5194 Frame rotation 252 degrees. North is to the 8 o’clock.

Trying to ignore the elephant in the room which is both of these galaxies classified as M51. This looks just like a barred spiral, with the bar orientated N/S. After 5 mins it looks like the lower case letter ‘e’ with the long tail curving its way towards NGC 5194. The core is bright and round.

NGC5194 . The core is not as bright as NGC5195’s . You can clearly see the two spiral arms winding their way around the core. If I wind up the histogram I can just make out the small galaxy IC4278 6.6 arc/min to the NE

I seem to have lost the image taken for the following two sessions.

NGC6210

Really trying to find objects where this wind isn’t affecting the scope. I think this is on the wrong side of the borderline. Started with 60 sec subs, but the wind is too obvious. Dropped to 5 secs, but image still very poor.

L8

Theophilus. In moments of steady seeing, I can see the maybe one level of terrace. The mountain peak in the centre is split into two with what looks like a valley running through it. There is a small impact crater to the 2 o’clock