Even the single 120 second subs showed more of the "tail" than I have witnessed to date. I even think I'm seeing a "bowing" of the anti-sun tail away from the direction of cometary travel. There also seems to be a slight eccentricity to the coma, shortened on the forward directed side. All could be my imagination, your guess is as good as mine. I've included the 85 stacked frames of comet "only" full scale image, which initiall made my jaw dropped when fist view on the computer screen once the integration routine completed. Observational details: Backyard setup scope: C14 D = 356mm; fl =729mm; F# 2 camera: asi 2600mcP exposure: 85 x120 sec Seeing: 5/5 Transparency: 9/10 Observer: DEBartlett Projection ............... Gnomonic Projection origin ........ [1308.491379 1079.931945] px -> [RA: 17 11 31.614 Dec: +80 14 50.65] Resolution ............... 1.921 arcsec/px Rotation ................. -1.153 deg Reference system ......... ICRS Observation start time ... 2023-07-11 07:21:10 UTC Observation end time ..... 2023-07-11 07:23:10 UTC Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m Focal distance ........... 729.00 mm Pixel size ............... 6.79 um Field of view ............ 1d 23' 47.0" x 1d 9' 9.1" Image center ............. RA: 17 11 31.613 Dec: +80 14 50.65 ex: -0.000078 px ey: -0.000043 px Image bounds: top-left .............. RA: 17 28 43.211 Dec: +80 48 41.66 ex: -0.000818 px ey: -0.002259 px top-right ............. RA: 16 53 48.156 Dec: +80 46 55.63 ex: +0.000056 px ey: -0.002163 px bottom-left ........... RA: 17 27 20.233 Dec: +79 39 41.19 ex: -0.002631 px ey: +0.001363 px bottom-right .......... RA: 16 56 16.305 Dec: +79 38 06.99 ex: +0.000989 px ey: +0.001743 px |
Page last updated: Thu 21 Dec 19:46:22 GMT 2023