Pay in 4 interest-free payments of $27.50 Learn more
Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
38cm high and 8cm deep
Sources and Suggested Reading
Infrared blocking filter restricts measurement to visual bandpass
• Archaehierax sylvestris by Ellen Mather
where has it gone
Handheld sky-quality meter Colouring and activity books 38cm high and 8cm deepAn affordable meter for measuring sky brightness for astronomers! The sky quality meter measures the brightness of the night sky in magnitudes per square arcsecond. Unprecedented sensitivity in a handheld meter! Uses Find out how good the night or site REALLY is. Compare the sky brightness at different sites quantitatively. Document the evolution of light pollution in your area. Set planetarium dome illumination to mimic the skies people are likely to
