British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community

Mercury in IR on 26th April

Image

Expand image

About this observation
Observer
Chris Hooker
Time of observation
26/04/2020 - 08:30
Object
Mercury
Observing location
Didcot, Oxfordshire
Equipment
254 mm Newtonian
Tele Vue 5x Powermate
Baader IR-pass filter (685 nm)
ZWO ASI174MM mono camera
Exposure
0.4 ms
Tags

Mercury imaged fairly early in the morning before the Sun's heat disturbed the local seeing too severely. There was no breeze, so a small region of interest could be selected, allowing nearly 500,000 frames to be captured in about 40 minutes of observation. Images processed by frame selection in software showed the main features, but the images shown above are the result of a mix of software and manual frame selection. The raw data was processed initially using PIPP then Autostakkert! to produce stacks with various percentages of frames. These were analysed using Registax, and the final frame selection was from the 12 videos that were consistently identified by Registax as giving the best-quality stacks. The result is noticeably better than the software-only version.

Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please contact the webmaster.