Spend a Week with Comet 67P/Churyumov-Gerasimenko
Taken by Bob Beal on November 17, 2021 @ Washington, Utah, USA
Click photo for larger image
  Camera Used: Unavailable Unavailable
Exposure Time: Unavailable
Aperture: Unavailable
ISO: Unavailable
Date Taken: Unavailable
 
More images
Details:
I thought it would be interesting to see at a common scale the progress of the comet along its path during the past week, Nov 7-15, using images from Spaceweather's photo gallery as tiles in a mosaic. The comet is moving from right to left. Differences in its appearance are more due to the location, equipment used, and processing performed by the individual contributors than from any physical changes during the week.

This is the week the pace picked up of submissions of it to the gallery, which I attribute to Y. Aoshima's posting on Nov 7 revealing just how skinny and long its tail is; at the panorama's ~6° width the tail would extend 2/3 of the way across it (~4° long). I know it caught my interest. I also knew I lacked the processing prowess to show off the tail the way others could, but at least I got out there and got an image too.

Photos were assembled based on a "first-found, first-used" basis, one tile per person. I made no attempt at perfect stitching and certainly no blending. It's almost impossible to fully account for lens distortions, rotations, and scale differences between photos (at least with the simple tools I have), so along the seams stars may be missing or duplicated. Conveniently, the comet is headed almost due east (left), and the tail is tilted just enough to avoid overlap in each tile, making it possible to create a panorama with visual appeal.

To get oriented, the panorama has north/up and west/right (the comet is moving left/east), the field of view is ~6° wide, the bright star at its center is phi Geminorum, the Cancer/Gemini border roughly bisects vertically my tile, and Gemini's brightest star Pollux lies beyond the photo directly above the leftmost corner of G. Ventre's tile.

Here are links to the originals of each of the photos in the panorama if you wish to view them at their best quality and read any details about their acquisition:

Nov 15     E Herman
Nov 14     M. Broussard
Nov 12     B. Beal
Nov 12     M. Govoni
Nov 11     M. Jaegar
Nov 8     G. Ventre
Nov 7     Y. Aoshima
Nov 7     G. Klingersberger

Photographer's website:
No URL provided.
Comments
  You must be logged in to comment.  
 
The Northern Lights: A Magic Experience
Aurora photo tours
Support SpaceWeather.com
Home | FAQ | Contact the Webmaster
©2019 Spaceweather.com. All rights reserved.