Comet 2013R1 Lovejoy on early morning of Nov 30, 2013


Date & Time: Nov 29 2013, from 28:06 to 28:50 JST(+0900)
Composed 15 shots with 3min. exposed
Optical: TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3)
with IDAS LPS-P2-FF light-pollution suppression filter
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Canon EOS 550D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO1600



Date & Time: Nov 29 2013, from 28:22 to 28:51 JST(+0900)
Composed 8 shots with 4min. exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with a conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Canon EOS 600D (Remodeled)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456)
Sensitivity...ISO3200
A right-hand side image has emphasized with the rotational-gradient process




Date & Time: Nov 29 2013, from 28:26 to 28:54 JST(+0900)
Composed 10 shots with 3min. exposed
Optical: AF zoom-Nikkor ED 80-200mmF2.8 (f=135mm, F4.0)
Auto-guided with TAKAHASHI EM-200 Equatorial
Digital Camera: Nikon D700
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording format...14bit CCD-RAW, converted to 16bit TIFF(2784×1848)
Device Size...DX format (24×16mm)
Sensitivity...ISO800, White Balance...Daylight


The comet 2013R1 Lovejoy in that day has positioned at about 3 degrees north of gamma Bootis. I could observe the comet at a location with dark skies, the images can show a well-proportioned dust tail stretched in northwest direction and a bluish piled ion tail in stripe-shaped clearly. The elevation of the comet is getting lower gradually, but I could detect a 4th magnitude coma with my naked eyes easily. The third image in wide angle tells us that the ion tail has a length of about 8 degrees.
  The 1st image: View angle: 1.5×2.3°
  The 2nd image: Cropped with an equivalent f=1825mm. (View angle: 0.46×0.7°)
  The 3rd image: View angle: 6.8×10.1°


2013R1 Lovejoy on early morning of Dec 1, 2013
2013R1 Lovejoy on early morning of Nov 29, 2013

Copyright(c) 2013 by Naoyuki Kurita, All rights reserved.
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