Antlia ALP-T Dual Band 3.5nm SII&Hb 2" Filter (ALP-T-3NM-SH-2) Dessicant Tabs Enlarged hand screws allow users

Enlarged hand screws allow users to open and close the tube ring without additional tools

Size: 53mm x 57

Many color cameras build this UV/IR filter into the camera or optical window for normal color imaging

Max Payload: 7

25") Weight: 10 oz ( 283 g) Solar Warning

Antlia ALP-T Dual Band 3.5nm SII&Hb 2" Filter (ALP-T-3NM-SH-2) Dessicant Tabs Enlarged hand screws allow usersAntlia ALP T Dualband 3. 5nm SII&Hb Filter: The ALP T dual band 3. 5nm SII&Hb filter is a dual narrowband filter, which lets the deep red Sulfur II 672. 4nm and the blue Hydrogen Beta 486. 1nm lines through and is primarily engineered for color cameras to assist astrophotographers taking deep sky images with superior SNR(Signal to Noise Ratio). With an FWHM half bandwidth designed at 3. 5nm and achieving an optical density (OD) of 4. 5 on unwanted