C/2022 E3 (ZTF) 2022-Aug-21 Dan Bartlett
Hi All,
Here is nearly two hours of exposure time on C/2022 E3 ZTF. Full resolution can be found here:https://astrob.in/8ssafc/0/
Observational details:
scope: RASA11 D = 279mm; fl =618mm; F# 2.2
camera: asi 2600mcP
exposure: 55 x120 sec
Seeing: 4/5
Transparency: 9/10
Observer: DEBartlett
Location: June Lake, California, USA
Image details for the single field and its inverted version:
WCS transformation ....... Linear
Projection ............... Gnomonic
Projection origin ........ [1503.997659 969.000954] px -> [RA: 16 45 08.033 Dec: +34 15 53.71]
Resolution ............... 1.670 arcsec/px
Rotation ................. -3.674 deg
Reference system ......... ICRS
Observation start time ... 2022-08-21 07:29:14 UTC
Focal distance ........... 619.39 mm
Pixel size ............... 5.01 um
Field of view ............ 1d 23' 42.5" x 53' 55.9"
Image center ............. RA: 16 45 08.032 Dec: +34 15 53.72
Image bounds:
top-left .............. RA: 16 48 22.993 Dec: +34 45 20.19
top-right ............. RA: 16 41 36.466 Dec: +34 39 54.56
bottom-left ........... RA: 16 48 37.579 Dec: +33 51 30.37
bottom-right .......... RA: 16 41 55.346 Dec: +33 46 08.18
Included also...4 Panels Showing Possible internal structure of Comet C/2022 E3 ZTF, 2022-08-21 at a distance of 2.2 AU
I've used HDRMT in PixInsight to pull out possible hidden internal structure of C/2022 E3 ZTF. This comet is still at a considerable distance from earth so I didn't expect to see much in the way of jets/outgassing. I was happily surprised to see a very different morphological internal appearance compared to my earlier HDRMT image of C/2017 K2 PanSTARRS see https://astrob.in/632wf6/0/
For those who merit the four panel HDRMT internal structure presentation, the image details of the starless images:
Resolution ............... 1.252 arcsec/px
Rotation ................. 3.794 deg (flipped)
Steps performed in PixInsight...Calibration, Debayer, star registration, Cometalignment tool for Star removal and HDRMT (selecting various scale layers highlighted on each panel)