Comet 2013R1 Lovejoy on early morning of Dec 7 & 8, 2013


Change for 24 hours (f=530mm prime focus)

Date & Time: (Left) Dec 6 2013, from 28:29 to 29:05 JST(+0900), 3min. ×15
(Right) Dec 7 2013, from 28:34 to 29:09 JST(+0900), 3min. ×15
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





f=1600mm prime focus (Early morning of Dec 7)

Date & Time: Dec 6 2013, from 28:38 to 29:07 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





f=200mm Telephoto (Early morning of Dec 7)

Date & Time: Dec 6 2013, from 28:28 to 29:03 JST(+0900)
Composed 12 shots with 3min. exposed
Optical: AF zoom-Nikkor ED 80-200mmF2.8 (f=200mm, F3.5)
with IDAS LPS-P1 Light-pollution suppression filter
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(4256×2832)
Device Size...FX format (36×24mm)
Sensitivity...ISO1600, White Balance...Daylight




The comet 2013R1 Lovejoy dislayed in this page has positioned at northern region of Corona Borealis in lower dawn northeast skies, I could detect the coma with visual brightness of 4th or 5th magnitude with naked eyes. The apparent size of coma has been a bit smaller than that in a week ago, but the dust tail has evolved that make the outside image looks like a well-proportioned bell-shape.
  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: 5.7×8.6°





2013R1 Lovejoy on early morning of Dec 14, 2013

2013R1 Lovejoy on early morning of Dec 1, 2013


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