Comet 2022E3 ZTF on Feb 11, 2023
Click on image to enlarge
Change of ion tail for 75min. (f=530mm prime focus)
| Date & Time: | Upper: Feb 11 2023, from 18:59 to 19:28 JST(+0900), 4min.×8shots |
| Lower: Feb 11 2023, from 20:15 to 20:44 JST(+0900), 4min.×8shots |
| Optical: | TAKAHASHI 16cm(6.3") epsilon (f=530mm, F3.3) |
| with IDAS LPS-D1 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI EM-200 Equatorial |
| CMOS Camera: | ZWO ASI2600MC Pro (Cooled temp.: -25°C) |
| Location: | Hitachi-oota city, Ibaraki pref. |
| Camera Settings: | Recording format...16bit FITS, converted to 16bit TIFF(6248×4176) |
| Device Size...23.5×15.7mm, Gain...100 |
Click on image to enlarge
Comet C/2022E3 ZTF & Mars
| Date & Time: | Feb 11 2023, from 20:24 to 20:32 JST(+0900) |
| Composed 3 shots with 4 minutes exposed |
| Optical: | BORG 67FL with conversion lens (f=324mm, F4.8) |
| with IDAS LPS-V4 Light-pollution suppression filter |
| Auto-guided with TAKAHASHI EM-200 Equatorial |
| Digital Camera: | Nikon D810A |
| Location: | Hitachi-oota city, Ibaraki pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(7362×4912) |
| Device Size...FX format (36×24mm) |
| Sensitivity...ISO2500, White Balance...Daylight |
This is the 6th magnitude-comet 2022E3 ZTF passed 10 days since its closest approach to the Earth.
The comet has swept south through the winter constellations and reached Taurus, just 55 arc minutes east of Mars in this day.
An ion tail of just over 1 degree is extending in the east direction.
The first group photo was taken at an interval of 75 minutes, and you can recognize that the shape of the ion tail has changed slightly.
The dust tail is widely diffused from north to northeast, and you can see that it curves greatly in the second picture.
The second image has cropped with an equivalent focal length of 350mm.
1st image: View angle: 2.05×0.90°
2nd image: View angle: 5.87×3.92°
