Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2024 Nov 07 - 00:00

Uploaded

2024 Nov 10 - 20:00

Objects

C/2023 A3

Planetarium overlay

Constellation

Ophiuchus

Field centre

RA: 18^h25^m
Dec: +04°08'
Position angle: -3°07'

Field size

2°39' × 1°40'

Full filename

2023a3/2023a3_20241107_dbartlett.jpg

Target name

C/2023 A3

Title

Racing the Moonlight, Comet C/2023 A3 Tsuchinshan-ATLAS Still Shines in Ophiuchus, November 07 2024UT Notes: 1. Went for a single panel covering around 2.5 degrees in length, fearing the waxing crescent would eliminate imaging a much larger mosaic. So much easier than a mosaic! 2. Reduced the exposure time by 15 seconds keeping the mean ADU to around 1100 or less. 3. Platesolving a single panel allows for an inverted annotated view. 4. The "ruddy" color has been calibrated using SPCC and I enjoyed a little freedom overindulging in color saturation. Why not it's pretty nifty. 5. Interesting jet-like features are present and a hint of green still persists in the front of the coma. Observational Notes: scope: C14 fl729mm F/2 Camera: asi6200mcP image: 58x45sec Seeing: 4.5/5 Transparency: 9.5/10 Observer: DEBartlett Place: JuneLake California USA (Altitude +2357m) Image Info (all ): Down sampled 2x2 (CMOS = BIN 2x2) (All images processed solely using PixInsight) Projection ............... Gnomonic Projection origin ........ [2246.917529 1418.763772] px -> [RA: 18 25 28.393 Dec: +4 08 07.89] Resolution ............... 2.122 arcsec/px Rotation ................. -3.130 deg Reference system ......... ICRS Observation start time ... 2024-11-07 02:03:21 UTC Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m Focal distance ........... 730.83 mm Pixel size ............... 7.52 um Field of view ............ 2d 38' 58.0" x 1d 40' 23.3" Image center ............. RA: 18 25 28.393 Dec: +4 08 07.89 ex: +0.001006 px ey: +0.003047 px Image bounds: top-left .............. RA: 18 30 34.957 Dec: +5 02 16.86 ex: -1.186133 px ey: -1.288814 px top-right ............. RA: 18 19 59.769 Dec: +4 53 37.16 ex: +1.877338 px ey: -1.281099 px bottom-left ........... RA: 18 30 56.227 Dec: +3 22 25.75 ex: -1.627634 px ey: +0.641495 px bottom-right .......... RA: 18 20 21.959 Dec: +3 13 42.90 ex: +0.380255 px ey: +0.430766 px _._,_._,_