Antlia 2.5nm SII Ultra Series Filter - 2" -SII-ULTRA-2.5NM-2 Svbony Hinged ring system separates easily

Hinged ring system separates easily by loosening the over-sized metal thumbscrews

No special setup effort is needed

Pentax High-Grade Lanthanum Optics for Exceptional Image Quality

HEM27/HEM27EC

SKU: S30330 Device Function: Dual-Function Type Mount ALT-AZ Mount: Yes Equatorial Mount: Yes GoTo: Yes Payload Capacity: 44 lb Mount Head Weight (lbs): 34 Tripod Weight (lbs): 16

Antlia 2.5nm SII Ultra Series Filter - 2" -SII-ULTRA-2.5NM-2 Svbony Hinged ring system separates easilyThis very narrowband 2. 5 nm SII filter from Antlia is part of their Ultra series and comes in a 2" threaded filter cell that is designed to be screwed on to the 2" barrel of your astrophotography accessory, including a 2" filter wheel or filter drawer. Antlia 2. 5nm Ultra Series Sulfur II Filter 2" Mounted All Antlia 2. 5nm Ultra Series Filters are made with quartz glass and undergo precisely controlled coating processes to ensure optimal