David's Astronomy Pages Images - Session 539 (2013-02-25)

Images (S538)

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Images (S540)

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Session Notes

C/2012 L2 (LINEAR) - Comet C/2012 S1 (ISON) - Comet     Hickson 33 - Galaxy Cluster (PGC 16863 et al)   Photometric Monitoring - Variables - RX And, R CrB, U Gem, RZ LMi, FO Ori, FU Ori - U And, Z And, DY Per, GK Per attempts failed (due to wind shake)     Astrometric Monitoring - Nearby Stars - None

- Late Evening session (2.4 hrs duration).  - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature: -3.0°C, (minimum) - CCD operation -30°C (at 67% average cooling).   - main objectives of the session were to acquire images of selected project stars for ongoing photometric and astrometric analysis. Opportunity was taken to acquire images of a number of Comets and Galaxy Clusters. -

C/2012 L2 (LINEAR) - Comet

C/2012 L2 (LINEAR)  (moving through starfield in Aries) Sun Distance +1.81 AU

Annotated CCD Image (cropped) 4 x 30 sec exposure (average combine), 3x3 binning, C Filter  2013-02-25 20:03hUT (#539054-58) 12" LX200R  (at f/9.7) + ST-10XME

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C/2012 S1 (ISON) - Comet

C/2012 S1 (ISON) (moving through starfield in Gemini) Comet at 4.65 AU distance from sun

Annotated CCD Image (cropped) 5 x 90 sec exposure (average combine), 3x3 binning, C Filter  2013-02-25 19:53hUT (#539046-51) 12" LX200R  (at f/9.7) + ST-10XME

C/2012 S1 (ISON) (moving through starfield in Gemini) Comet at 5.75 AU distance from sun / i.e beyond the orbit of Jupiter

Annotated CCD Image (100% size, cropped) 5  x 180s exposure (average combine), 3x3 binning, C Filter  2012-11-11 04:22 hUT (#524411-15) 12" LX200R  (at f/9.7) + ST-10XME

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Hickson 33 - Galaxy Cluster (PGC 16863 et al)

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