Thursday, April 16, 2020

Starting Soon

I should also mention that this observing program begins on Monday, 20 April 2020.  That's pretty much the first day that Jupiter and Saturn are sufficiently high in the sky (about 20 degrees elevation and rising) to get some decent data.  Saturn will still be a little low at first, but it's right there so why not?

I also made a list of eclipse events for HW Vir, which is currently my favorite EB system.  Here they are for the next week or so that I'll be able to see between 10h and 11h UTC:

S 20 Apr 2020 10:52
P 21 Apr 2020 10:41
S 22 Apr 2020 10:29
P 23 Apr 2020 10:18
S 24 Apr 2020 10:07
S 27 Apr 2020 10:57

where 'P' and 'S' are Primary eclipse and Secondary eclipse.

I'm observing between 10 and 11h UTC because that's when Saturn and Jupiter are up.  Iapetus will be in a perfect location (almost as far away from Saturn as it can be):


The reason I need Iapetus to be far away from Saturn is that 1 or 2 second exposures are required for this target.  It's a faint visual magnitude 12.  Doing that long of an exposure with Saturn in the FOV probably wouldn't hurt the CCD, but wow it would be incredibly overexposed.  So all of this data will not include Saturn, but will hopefully contain a bright reference star most of the time.  Iapetus is sufficiently far away from Saturn during most of its orbit to make this project possible.

If I get other moons in the FOV, that'll be bonus.

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