Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2024 Mar 08 - 00:00

Uploaded

2024 Mar 11 - 06:12

Objects

12P Pons-Brooks

Planetarium overlay

Constellation

Andromeda

Field centre

RA: 00^h29^m
Dec: +38°42'
Position angle: +24°39'

Field size

10° × 15°

Full filename

12p/12p_20240308_dbartlett.jpg

Target name

12P Pons-Brooks

Title

Using a Samyang 135mm @ F2.4 and a full frame asi6200mcP, piggybacked on a RASA8, I had a moment between storms last night. The comet showed interesting dynamics as it hovered above the mountain ridges from light twilight till set - about 40 minutes. Was able to see some details in M31 as I continued to image after the comet set, for another 38 minutes, until M31 also set. The comet's color was quite a bit easer to notice than M31 during processing, with its bluish tail standing out. Observational details: Backyard setup scope: Rokinon = 135mm F2.4 exposure: 19 x 120 sec (comet) 38 x 120 (Starfield) Seeing: 4.5/5 Transparency 8/10 Observer: DEBartlett Place: June Lake_California USA Image Info (standard images): Projection ............... Gnomonic Projection origin ........ [1535.658691 2361.740294] px -> [RA: 0 29 37.590 Dec: +38 42 26.41] Resolution ............... 11.972 arcsec/px Rotation ................. 24.652 deg Reference system ......... ICRS Observation start time ... 2024-03-09 03:07:08 UTC Observation end time ..... 2024-03-09 04:17:44 UTC Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m Focal distance ........... 129.57 mm Pixel size ............... 7.52 um Field of view ............ 10d 12' 32.8" x 15d 41' 45.9" Image center ............. RA: 0 29 37.590 Dec: +38 42 26.39 ex: +0.078798 px ey: -0.006173 px Image bounds: top-left .............. RA: 1 12 38.060 Dec: +43 11 19.76 ex: -1.479622 px ey: -1.244630 px top-right ............. RA: 0 21 37.203 Dec: +47 51 23.60 ex: +0.503661 px ey: -1.087157 px bottom-left ........... RA: 0 35 45.553 Dec: +29 32 51.34 ex: -1.412342 px ey: +1.858413 px bottom-right .......... RA: 23 52 04.6