Daytime Sighting of Jupiter

Click on graphic to see it full size.

Click on graphic to see it full size.

   This coming Friday morning, 22 November, the 19.25 days old waning gibbous Moon will be around 5-7 degrees from the planet Jupiter as both are setting in the west. This places the two within the viewing field of 7×50 binoculars as the banner graphic at the top of the page illustrates.
   Use the Moon as a guide to locate Jupiter either with or without binoculars and then use a technique called averted vision to see Jupiter. Averted vision or peripheral vision is done by looking at an object, like Jupiter, not directly but rather by turning your head slightly so that Jupiter is seen from the corner of your eye. That part of your eye is more sensitive to light, and many astronomers use this technique for seeing fainter objects. What seems to work best is to turn your head so that the object moves toward your nose. As a right-handed person I would turn my head slightly to the right while lefties would turn their head to the left. In the southern hemisphere this works best if you are upside down. (just kidding!!)

   
   
   
Caution: Objects viewed with an optical aid are further than they appear.
   Click here to go to the Qué tal in the Current Skies web site for more observing information for this month.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s