Daten vom November 2018. Vor allem ein Test, um herauszufinden, wie weit mit der Belichtungszeit herunter gegangen werden muss, um gute Sternfarben zu erhalten. 100s mit der ASI 294MC Pro bei Gain 120 und f/5.5 scheinen brauchbar, 200s waren schon zu lang. Details bei Astrobin.
Data from November 2018. Primarily a test for exposure time to get proper star colors. 100s with the ASI 294MC Pro at gain 120 and f/5.5 work well, 200s were already too long. Details at Astrobin.
As a follow-up to last month’s total lunar eclipse, this image shows the comparison of the apparent moon size at U3 (end of totality) with the previous eclipse of July 2018, both observed in Cologne, Germany.
Left: Total Lunar Eclipses of 27 Jul 2018 at U3 23:13:12 CEST, distance* Cologne-Moon 406 196 km, full moon at apogee, sometimes called “Micromoon”.
Right: Total Lunar Eclipse of 21 Jan 2019 at U3 06:43:24 CET, distance* Cologne-Moon 358 064 km, full moon at perigee, nowadays called “Supermoon”, giving rise to the blatant “Super Wolf Blood Moon” nuisance.
This lunar eclipse trail shows the partially and totally eclipsed Moon over the Unesco World Heritage Cologne Cathedral, Germany, amongst ultra-bright city lights. Normally this isn’t an astronomy hot spot, and it’s hard to make out any stars beyond Mag 2 at this location. But given the geometry of the setting moon and the lunar eclipse I simply had to do this. ;-)
Composite of 68 images for the moon trail from 04h41 until 07h29 CET edited in Lightroom/Photoshop, thereof 3 for the foreground and the dawn sky at 07h29 CET, removing a bicyclist and a pedestrian. Some horizontal stray light from the street lights.
We spent a total of 4 hours at around -7 °C at the Hohenzollern Bridge, but that’s the fate of the astronomically minded.