Is it possible to image Polaris from sg ?

[PETER LOO]

It is at least theoretically possible since it is 2.08 deg in Altitude during transit, ie. when Local sidereal time (LST) = Star's Right Ascension (RA)

[cytan299]

Hi Peter,

I would think it's possible as long as there's nothing blocking the view, like a big boat

Here's my back of the envelope argument: 2 deg is the size of 2 pinkies held at arms length, and refraction at the horizon near the Equator gives you another 1/2 deg so, you have about 2.5 deg above the horizon to view Polaris. And for comparison, the Sun is 1/2 deg, and we've all seen the Sun setting at the horizon at the beach, so I conclude that it *is* definitely possible.

cytan

[PETER LOO]

I get what you meant, thanks for info.

[PETER LOO]

Simplified diagrams for better visualizations