Ultra High Contrast UHC 1.25 inch telescope filter，Eliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components workwarehouse and then turn to dim

and then turn to dim light again after about 37 seconds

Made of thick aluminium alloy and heavy duty spring

Flat US Plug AC 80-300V LCD Digital Voltmeter Voltage Measuring Monitor

3~45m/s Temperature Range -10℃~45℃ （14℉~113℉） -10℃~45℃ （14℉~113℉） -10℃~45℃ （14℉~113℉） -10℃~60℃ （14℉~140℉） -30℃~70℃ (-22℉~158℉) 0℃~45℃ （32℉~113℉） Back Light ✓ ✓ ✓ ✓ ✓ Auto Power Off ✓ ✓ ✓ ✓ ✓ ✓ Data Hold ✓ ✓ ✓ USB Connect ✓ Wireless Bluetooth APP ✓ Barometer Meter ✓ Air Flow Setting（CFM） ✓ ✓ Altitude Measurement ✓

Ultra High Contrast UHC 1.25 inch telescope filter，Eliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components workwarehouse and then turn to dimUltra High Contrast UHC 1. 25 inch telescope filterEliminates light pollution, Improves astrophotography contrast, Aluminum alloy frame, Stackable filter structure, Astronomical components Product Features Multi layer optical coating,eliminates urban mercury and sodium lamps artificial light pollution, clearer celestial objects, higher the nebula contrast and astronomical photography image quality. 1. 25 inch telescope filter, standard thread M28.