Environmental variables: The current and future bioclimatic variable data (according to a 2.5-arc-minute grid), elevation data (again, to a 2.5 arc-minute
grid) and soil data (to a 0.5 arc-minute
grid) were used for modelling, comprising the environmental layer input for SDM.
The same applies to vision; the density of our rod and cone cells limits our acuity to about 1 arc-minute
(Campbell and Green 1965), which translates to about 300 dots per inch at a 12-inch viewing distance.
Since the apparent diameter of Venus is nearly 1 arc-minute
, and apparent diameter of the Sun is 32 arc-minute
, hence the planet Venus appears to be only 1/32 of the Sun's apparent diameter.
* The ability to be combined with precision reducers to provide system backlash < 1 arc-minute
Max torque up to 7300 in-lb and positional accuracy better than 1 arc-minute
can be achieved, The FHA Series is available in four frame sizes, ranging from 128 to 230mm in diameter, and 78 to 127mm in length.
"We're likely to get very important microwave background observations on the degree, arc-minute
, and arc-second scales," says David N.
Its magnitude of 11.1 is tempered by a modest surface brightness of magnitude 14 per square arc-minute
. At 166x I see a diffuse cloud elongated 2:1.
* Availability with input speeds of up to 6,000 RPM with 15 integer ratios from 3 to 100 and circumferential backlash as low as 1 arc-minute
Rated torque up to 1730 in-lb and positional accuracy better than 1 arc-minute
can be achieved.
Rated torques up to 1730 in-lb and positional accuracy better than 1 arc-minute
can be achieved.
This group fits quite easily into something as little as a 12 arc-minute
field of view.
Unlike the planets, which all appear smaller than 1 arc-minute
across, the Moon can easily fill the entire field of view of your telescope and camera.