David's Astronomy Pages Images - Session 587 (2015-05-07)

Images (S586)

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Images (S588)

Objects	Session Notes
AC Her - Variable Star (RV Tauri type) HD 165029 - A0V Star HIP 81693 - Binary Star (40-Zeta Herculis, Struve 2084)     Barnard 72 - Dark Nebula     IC 4665 - Open Cluster     M94 - Spiral Galaxy     Photometric Monitoring - Variables   - R CrB, CI Cyg, S Cyg, SS Cyg, BL Lac, RZ LMi, DY Per     Astrometric Monitoring - Nearby Stars   - CN Leo	- All Night session (4.9 hrs duration) - Session operated under semi-automated control, with remote monitoring from indoors computer.   - Ambient Temperature:  tube temperature fell to -3.0°C (minimum) - CCD operation -30°C (at 65% average cooling).  - Planned objectives of the session were to monitor selected variable stars & nearby stars and to take Spectral images. -

AC Herculis - Variable Star (RV Tauri type)

AC Her (Hercules)

Approximate Colour CCD Image (cropped) Red: 3 x 5s exposure (average combine), 3x3 binning, R Filter Green: 3 x 5s exposure (average combine), 3x3 binning, V Filter Blue: 3 x 10s exposure (average combine), 3x3 binning, B Filter (Mix Ratio R:1, G:1, B:2) 2015-05-08 00:23 h UT (#586033-44) 12" LX200R  (at f/10.4) + ST-10XME [Full size]

AC Her - detail

CCD Image (cropped) 3 x 5s exposure (average combine), 3x3 binning, C Filter 2015-05-08 00:22 h UT (#586033-41) 12" LX200R  (at f/10.4) + ST-10XME

AC Her - Wider View

CCD Image (50% size) Image details as above

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HD 165029 - A0V Star

HD 165029 (Hercules)

Annotated CCD Image (50% size) 10s exposure (single frame), 3x3 binning, C Filter (Locate 2015-05-02  02:10h UT (#587158) 12" LX200R  (at f/10.4) + ST-10XME Target Locating Image for Spectra Images (below)

HD 165029 - Spectral Image

CCD Image (rotated, cropped) 5 x 10s (average combine), 2x2 binning, Half Frame, SA 200 Filter 2015-05-02  02:18h UT (#587180-86) 12" LX200R  (at f/10.4) + ST-10XME

HD 165029 - Recorded Spectral Profile

Spectral Profile Plot (RSpec) Image details as above

HD 165029 - Spectral Profile vs A0V Reference

Spectral Profile Plot (RSpec) Image details as above

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HIP 81693 - Binary Star (40-Zeta Herculis, Struve 2084)

HIP 81693 / 40-Zeta Herculis / Struve 2084 (Hercules)

CCD Image (50% size) 20s exposure (single frame), 3x3 binning, C Filter 2015-05-08 00:58 h UT (#587080) 12" LX200R  (at f/10.4) + ST-10XME

HIP 81693 / 40-Zeta Herculis / Struve 2084 - detail Components are very difficult to space. All 3 frames taken with 0.12s exposure indicate an asymmetry in the star. The frame below suggests a second star is present with an estimated spacing of 2-3 pixels from the brightest one  (equivalent to 1.5 to 2.5 arc secs) Catalog details for Struve 2084,   A: Mag +3.0, B: Mag +6.5

Composite CCD Image (3 frames with 500% insert) 0.12s exposure (3 frames, 10s apart), 2x2 binning, C Filter 2015-05-08 00:59 h UT (#587081-83) 12" LX200R  (at f/10.4) + ST-10XME

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 Barnard 72 - Dark Nebula (Snake Nebula)

Barnard 72 (Ophiuchus) (recorded under brightening sky conditions - need to repeat sometime & include use a larger FOV)

CCD Image Mosaic 3x4 (30% size) 20s exposure, 3x3 binning, C Filter 2015-05-08 02:25 h UT (#587187-98) 12" LX200R  (at f/10.4) + ST-10XME [Larger Image, 60% size]

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IC 4665 - Open Cluster

IC 4665 (Ophiuchus) Hidden Treasures catalog object 83  [ Open Star Clusters ] [ Hidden Treasures ]

CCD Image Mosaic 4x5 (25% size, cropped) 20s exposure, 3x3 binning, C Filter 2015-05-08 01:26 h UT (#587098-132) 12" LX200R  (at f/10.4) + ST-10XME [Larger Image, 50% size]

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 M94 - Spiral Galaxy

M94 (Canes Venatici)

CCD Image (Log scale, 50% size) 3 x 60s exposure (average combine), 3x3 binning, C Filter 2015-05-08 02:00 h UT (#587144-48) 12" LX200R  (at f/10.4) + ST-10XME

M94 - Detail

CCD Image (Log scale, cropped) Image details as above

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