Post by deepskydarrell on Feb 4, 2014 9:05:47 GMT -8
Hi Mark, the tables are for MacDonald Park which makes most times about 2 or 3 minutes ahead of Vancouver. The moon times for the Loon Lake gravel pit wouldn't be that far off either since that longitude isn't that far from ours. Twilight, at times, could be rather different for the gravel pit since that's almost a degree farther north.
We are right on the edge of twilight never ending in June and early July. We're about 25 nights in unending twilight whereas Bellingham is 15 and I think around Mt Vernon is 0. But that's splitting hairs of half of a degree or so. That was one nice thing about the Mt Bachelor Star party in central Oregon -- they used to have it during the Solstice and it stayed dark there for almost 4 hours in late June. A great time for chasing Scorpius.
The data for the Moon's illuminated percentage is rather new for me but useful. There is a chance of occasional error in my times since I had to transpose from the sheet, the daylight savings times from standard in my head. Plus the 24 hour clock to regular time is a bit of a pain -- even for this railroader. But for me the calendar is well worth the work since I use it all the time.
When I drive south I make a single month calendar for that location plus I record what Right Ascension is on the meridian at what hour of the night. Being a hard copy boy I don't have a phone app or machine to lean on when out in the dark so I do it (plan) the old fashioned way.
Glad you can use the calendar.
16.5 inch F 5.3 Zambuto Optics homebuilt Dobsonian