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°
