Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2025 Apr 21 - 00:00

Uploaded

2025 Apr 27 - 05:30

Objects

C/2025 F2

Full filename

2025f2/2025f2_20250421_dbartlett.jpg

Target name

C/2025 F2

Title

C/2025 F2 SWAN 2025_April_21_045819local Notes: Comet aligned w stars Integrated w median combination No rejection & Full resolution @ highly cropped. SPCC color calibrated for truest color in non inverted images. Nuclear region with lack of consentration. Imaged from 3 degrees to 10 degrees above local horizon. Observational details: Backyard setup scope: C14 D = 356mm; fl =729mm; F# 2 camera: asi 6200mcP exposure: 30 x15 sec Seeing: 4/5 Transparency: 8/10 Seeing - Moonlight Observer: DEBartlett Location: June Lake, California, USA Image Info (Cropped Closeup ): Projection ............... Gnomonic Projection origin ........ [1273.271790 970.790453] px -> [RA: 1 25 57.445 Dec: +34 53 22.15] Resolution ............... 1.070 arcsec/px Rotation ................. 36.951 deg Reference system ......... ICRS Observation start time ... 2025-04-21 11:49:30 UTC Observation end time ..... 2025-04-21 12:04:48 UTC Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2434 m Focal distance ........... 724.65 mm Pixel size ............... 3.76 um Field of view ............ 45' 24.9" x 34' 37.4" Image center ............. RA: 1 25 57.445 Dec: +34 53 22.14 ex: -0.008083 px ey: +0.007627 px Image bounds: top-left .............. RA: 1 28 16.582 Dec: +34 53 28.03 ex: -1.105999 px ey: -1.097837 px top-right ............. RA: 1 25 17.599 Dec: +35 20 50.19 ex: +0.400190 px ey: -1.698673 px bottom-left ........... RA: 1 26 36.733 Dec: +34 25 54.97 ex: -1.683461 px ey: +1.037237 px bottom-right .......... RA: 1 23 38.108 Dec: +34 53 06.78 ex: +0.033824 px ey: +0.267342 px =====================================