David's Astronomy Pages Images - Session 555 (2013-11-18)

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Images (S556)

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Session Notes

GSC 3169:2228 - Star Field     M33 - Spiral Galaxy (Pinwheel Galaxy)   Variable Stars (photometric monitoring) - None   Nearby Stars (astrometric monitoring) - None

- Evening session (4.7 hrs duration).  Poor sky transparency - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature:  -3.0°C minimum - CCD operation -25°C (at 57% average cooling).   - main objectives of the session was to test out auto-guiding using AO-8 unit and to prepare an effective  return to imaging.  - focusing  - focusing offsets for filter  - polar alignment check - Notes 2013-11-18

GSC 3169:2228 - Star Field

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M33 - Spiral Galaxy (Pinwheel Galaxy) - 3.0 mly

M33 (Triangulum) poor transparency, stars sharp due to good seeing and use of AO-8 unit

CCD Image (Linear Brightness Scale, 75% size) 10 x 180s exposure (average combine), 3x3 binning, C Filter  Autoguided on mag 8 guide star using AO-8 2013-11-18 20:25hUT (#555079-90) 12" LX200R  (at f/10.4) + ST-10XME

Earlier Image of M33 - showing named HII regions much better sky transparency

CCD Image (Linear Brightness Scale, 75% size) 3 x 180s exposure (average combine), 3x3 binning, C Filter  2010-10-07 00:51hUT (#430334-36) 12" LX200R  (at f/9.7) + ST-10XME [Full Size Image]

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