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Epsilon Aurigae. College of San Mateo Science Center & Planetarium. Lunar eclipse 10-27-07. Imaging: Deep sky Planetary Photometry Spectroscopy Video. Equipment: Losmandy G-11 -excellent tracking. 8”SCT @f/6.3 -good signal -5 min. exp.

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Epsilon

Aurigae


College of San Mateo

Science Center & Planetarium

Lunar eclipse 10-27-07


Imaging:

Deep sky

Planetary

Photometry

Spectroscopy

Video


Equipment:

Losmandy G-11-excellent tracking.

8”SCT @f/6.3-good signal-5 min. exp.

ST7-XME CCD-SGS matched, guide chip.SBIG-SGS -1.06 A/pix x765. -Oriented E/W


Software:

TheSky 6-accurate mount control

CCDSoft-image acquisition

Maxim DL-image reduction (darks)

Iris, Vspec, IRAF-spectra processing


Calibration spectra:

Blue=mercury 4358, px. 236

Red=neon 6402, px. 332(SGS micrometer)

Exp.=Merc=180s Neon=90s(autodarks)


Imaging:

2 Stars: eps Aur & HR1544

ConnectST7

SyncSky6

Focusmanual

Calibrateguider

Testexposure


Imaging:

1st calibration spectra:red or blue.

Image 1st star: eps Aur or 1544, 5 min.

Slew/image 2nd star: same wavelength.

2nd cal. spectra:re-image both stars.

All images: x2 Dark frames: x10


Processing: IRAF

Starting point for analysis: Raw eps Aur / red. Intensity level vs. pixel number.


Processing: IRAF

Raw HR1544 / red. Standard star, used to

flux calibrate eps Aur. -Taken the same night.


Processing: IRAF

Flux calibrated epsilon Aurigae in red.

Intensity vs. wavelength.



“Epsilon Aurigae - A Spectral Investigation.” 30, 2009

Summer 2009 Citizen Sky Workshop


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