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Images (S587) |
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Images (S589) |
Objects Session Notes
NGC 4725 - Spiral Galaxy (Herschel I-84) Photometric Monitoring - Variables U Gem, AC Her, DY Per, UV Per Astrometric Monitoring - Nearby Stars CN Leo
DX Cnc attempt (failed due to cloud)
- Late evening session (1.0 hrs duration) cut short when sky transparency reduced / thin clouds
- Session operated under semi-automated control, with remote monitoring from indoors computer. - Ambient Temperature: tube temperature fell to +2.0 degC (minimum) before rising to +4.0 deg by end of session as cloud developed - CCD operation -30 degC (at 76% average cooling). - Planned objectives of the session were to monitor selected variable stars & nearby stars -
NGC 4725 / Herschel I-84 (Coma Berenices) (Image taken under poor sky conditions) |
CCD Image (linear scale, 50% size) 90s exposure (single fra,e), 3x3 binning, C Filter 2015-05-13 22:51 h UT (#588051) 12" LX200R (at f/10.4) + ST-10XME |
NGC 4725 / Herschel I-84 - Earlier Image (2015-04-20) (NGC 4725 taken under good sky conditions) |
CCD Image (linear scale, 50% size) 5 x 90s exposure (average combine), 3x3 binning, C Filter 2015-04-20 23:56 h UT (#585082-88) 12" LX200R (at f/10.4) + ST-10XME [larger image, 75% size] |
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This Web Page: | CCD Images - Session 588 (2015-05-13) |
Last Updated : | 2015-05-16 |
Site Owner : | David Richards |
Home Page : | David's Astronomy Web Site |