Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2022 May 25 - 00:00

Uploaded

2022 May 30 - 20:47

Objects

C/2021 P4 (ATLAS)

Planetarium overlay

Constellation

Camelopardalis

Field centre

RA: 05^h50^m
Dec: +56°25'
Position angle: -5°29'

Field size

1°19' × 1°45'

Full filename

2021p4/2021p4_20220525_dbartlett.jpg

Target name

C/2021 P4 (ATLAS)

Title

Imaging Telescopes Or Lenses Celestron RASA 11" Rowe-Ackermann Schmidt Astrograph 11" Imaging Cameras ZWO ASI2600MC Pro Mounts 10MICRON GM2000 HPS Software Pleiades Astrophoto, S.L. PinInsight 1.8 · AutoStakkert Autostackert! 3 Acquisition details Dates: May 25, 2022 Frames: 59x60" (59') Integration: 59' Avg. Moon age: 24.87 days Avg. Moon phase: 22.59% Basic astrometry details Astrometry.net job: 5808432 RA center: 05h50m50s.4 DEC center: +56°25'33? Pixel scale: 1.569 arcsec/pixel Orientation: 5.475 degrees Field radius: 1.102 degrees Find images in the same area Resolution: 3039x4044 Locations: June Lake California, USA, June Lake, CA, United States Data source: Backyard Description Comet C/2021 P4 will be coming closer to us and the sun over the next two months. It is not expected to brighten more than a magnitude or two, however we are talking about comets. Currently a northern/evening and circumpolar comet, however the image circumstances were fairly tough. I couldn't image the comet higher than 25 degrees with encounters with numerous coniferous trees and Mountain ridges interfering with the exposures. Coloration indicates a dusty envelope. For those who archive: Image information: WCS transformation ....... Linear Projection ............... Gnomonic Projection origin ........ [1519.500340 2022.004773] px -> [RA: 5 50 50.410 Dec: +56 25 33.63] Resolution ............... 1.569 arcsec/px Rotation ................. -5.467 deg Reference system ......... ICRS Observation start time ... 2022-05-26 04:36:12 UTC Focal distance ........... 617.97 mm Pixel size ............... 4.70 um Field of view ............ 1d 19' 27.5" x 1d 45' 44.1" Image center ............. RA: 5 50 50.410 Dec: +56 25 33.64 Image bounds: top-left .............. RA: 5 55 06.495 Dec: +57 21 42.90 top-right ............. RA: 5 45 20.964 Dec: +57 13 54.11 bottom-left ........... RA: 5 56 06.066 Dec: +55 36 20.89 bottom-right .......... RA: 5 46 46.683 Dec: +55 28 53.00 Comet C/2021 P4 ATLAS @ 11th Magnitude is Presenting a Dusty Show, Dan Bartlett