Conjunction in Progress

[mikemarotta]

13 December 2020 1815 hrs CST (UTC -6). Location = Austin., Texas 30.177276 North by -97.8044841 West. 

My goal was to sketch the present state of the Jupiter-Saturn conjunction. I calculted the Field of View and created a proportional workspace in my notebook. I already practiced viewing a ruler while viewing the sky with both eyes open.

FOV = 2.42 deg = 145.45 arc minutes. Objective = 102 mm; Focal = 660 mm; F/6.47. Ocular 32 mm

In this sketch line AC, the radius of workspace is 4.84 cm.

 

Edited January 14, 2021 by mikemarotta

[mark81]

That's a nice way to record the whole event... All you need is a nice clear sky for the next week... Not sure that will happen here..

[mikemarotta]

On the 17th, I drew this. The scale is in decimal inches for my convenience. (The mms were hard to read in the dark.)

 

Edited January 14, 2021 by mikemarotta

[mikemarotta]

This was last night, the 19th. MIllimeter scale. Different ocular, so a different FOV calculation, but still to scale.

 

[mikemarotta]

Final works. The night of maximum (or, minimum, actually) was cloudy here. My telescope pierced the haze enough to let me see bright spots. Saturn was an oval. That was it. The sky was clouded until the 24th. Here is what I had. 

Left-Right inversion in the refractor. Saturn is to the west.

Edited January 14, 2021 by mikemarotta