David's Astronomy Pages
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Images (S454) |
Images Sessions |
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Images (S456) |
Objects Session Notes
NGC 470 & NGC 474 - Spiral Galaxies (ARP 227) Photometric Monitoring - Variables - FO And, RX And, Z And, S Cyg, SS Cyg, BL Lac, CZ Ori - SZ Lyn attempt (aborted)
Astrometric Monitoring - Nearby Stars - EV Lac
- Early evening session (1.4 hrs), ending when wind and cloud developed - Session operated under semi-automated control, with remote monitoring from indoors computer. - Ambient Temperature: 2.0°C (minimum) - CCD operation -25°C (at 62% average cooling). - main objectives of the session was to acquire images of selected project stars for ongoing photometric analysis.
NGC 470 & NGC 474 /
ARP 227 (Pisces) faint circular concentric rings around NGC 474 are not visible in this image. |
Annotated CCD Image (50% size) 3 x 120sec exposure (average combine), 3x3 binning, C Filter 2011-02-12 18:58 h UT (#455036-38) 12" LX200R (at f/9.7) + ST-10XME |
NGC 470, Spiral Galaxy - detail |
CCD Image (100% size, cropped) Image details as above |
NGC 474 - detail faint circular concentric rings around NGC 474 are not visible in this image |
CCD Image (100% size, cropped) Image details as above |
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This Web Page: | Images - Session 455 (2011-02-12) |
Last Updated : | 2024-06-16 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |