British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Chris Hooker
Image search

Mercury in infrared, June 29th


Expand image

About this observation
Chris Hooker
Time of observation
29/06/2018 - 17:00
Observing location
Didcot, Oxfordshire
25 cm Newtonian
TeleVue x3 Barlow
Baader IR-pass filter (685 nm)
ZWO ASI120MM-S camera
2.3 msec
Like This Image

Excellent conditions for a change for a late-afternoon observation of Mercury. Minimal jet-stream and unusually good local seeing yielded a higher than normal percentage of acceptable frames: around 1.5% compared with 0.3% or so in the last few sessions. The quadrant of Mercury visible here has no prominent bright impact features. Kuiper is now a bright patch on the limb, highly foreshortened, and will soon rotate out of view altogether. The markings on the disc are fairly subtle tonal variations, which would not have been reliably seen in poorer conditions. However, the good seeing resulted in larger stack sizes and thus better image quality. The agreement between the verification images confirms that the markings are genuine, and there is a good match with a blurred Messenger image.

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.