kees scherer:
Comet C/2013 us10 Catalina revisited.
kees scherer:
Comet-Catalina-Ion tail movement !
kees scherer:
C/2013 us10 Catalina 21 dec 2015
kees scherer:
C/2013 US10 Catalina.
kees scherer:
Comet Lovejoy C/2014Q2 march 8
kees scherer:
Lovejoy-20150307-9min-ISO1600-Skywatcher-DSS-Photoshop-cropped-resized-web
kees scherer:
Comet C/2015 v2 Johnson Approaching.
kees scherer:
The Comet, the Surfboard and the Owl.
kees scherer:
Comet C/2015 v2 Johnson
kees scherer:
Comet C/2017 E4 Lovejoy
kees scherer:
Comet 46P/Wirtanen approaching Earth
kees scherer:
Comet 64P/Swift-Gehrels 2018-nov-30
kees scherer:
Comet 46P/Wirtanen coma diameter on 5 dec 2018
kees scherer:
Comet 46P/Wirtanen 08 december 2018
kees scherer:
Comet 46P/Wirtanen Tryptic
kees scherer:
Comet 46P/ Wirtanen 48hrs Subtle change.