Spectrum of 2009P1 Garradd on early morning of Jan 29, 2012

Optical image

(white box represents slit position for spectrum imaging)

Date & Time:	Jan 28 2012, from 28:08 to 28:15 JST(+0900)
	Composed 2 shots with 3 minutes exposed
Optical:	Meade 25cm(10") Schmidt Cassegrain (f=2500mm, F10.0)
	with SBIG DSS7 Spectrometer
	Auto-guided with Meade LX200 Equatorial & Pictor 201 XT
Cooled CCD Camera:	SBIG ST-402ME (Cooling Temp.: -25 deg.C)
Location:	Ooizumi, Hokuto city, Yamanashi pref.

Spectle image & Intensity distribution

Date & Time:	Jan 28 2012, from 27:59 to 28:04 JST(+0900)
	Composed 2 shots with 5 minutes exposed
Optical:	Meade 25cm(10") Schmidt Cassegrain (f=2500mm, F10.0)
	with SBIG DSS7 spectrometer (slit width: 0.05mm)
	Auto-guided with Meade LX200 Equatorial & Pictor 201 XT
Cooled CCD Camera:	SBIG ST-402ME (Cooling Temp.: -25 deg.C)
Location:	Ooizumi, Hokuto city, Yamanashi pref.

This page shows you a spectrum image and its wavelength dependence of intensity of the comet 2009P1 Garradd positioned in the constellation of Hercules.
Same as other many comets, coma of the comet has emission bands of carbon molecular (C₂, C₃) called "swan band", moreover lines of the cyan (CN), the radical of ammonia (NH₂), and so on.
(emission lines with * are spectles of Earth atmosphere or light pollution)

Honda-Mrkos-Pajdusakova on early morning of Oct 4, 2011

Garradd on May 12, 2012

		Copyright(c) 2012 by Naoyuki Kurita, All rights reserved.
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