Astronomy on MSN2 天
Oberwerk’s binoculars is really a pair of 5-inch refractors
What if you could find binoculars big enough to qualify as small telescopes? Get ready for the BT–127XL–SD apochromatic ...
Astronomy on MSN3 个月
Finding your first astroimaging rig
Refractors range vastly in quality and price; you can do reasonably well with some doublets but will get less chromatic ...
来自MSN1 个月
Could the Seestar S50 be your first imaging telescope?
The Seestar is built around an apochromatic refractor that sports a 2-inch f/4.9 triplet lens coupled with a Sony IMX462 CMOS sensor. Together, they excel at capturing celestial objects despite ...