Each Alstar 2 inch O III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O III emission lines
Not only useful at light polluted sites; the contrast is also increased at dark sky sites; can be used with all 2 inch eyepieces; Filter made from high grade glass with dichroic interference and antireflection coatings
Completely blocks virtually all other visible wavelengths of light so views of nebulas are optimized; Increases contrast through selective filtration Anti reflection coated to prevent glaring and ghosting
All-Weather Protection: Rugged EVA shell + waterproof lining resists impacts and moisture; Zippered seals keep filters dust-free during telescope adventures
7-Filter Expandable Storage: Flexible dividers fit up to 7 circular 86mm filters; Customizable compartments secure thicker astronomy filters
Alstar 2-Inch 80MM Telescope Eyepiece Extension Tube Adapter - Bundle with - 8 Piece Eyepiece & Filter Accessory Kit
SAR 363
-9%
Alstar 2-Inch 35MM Telescope Eyepiece Extension Tube Adapter - Bundle with - 8 Piece Eyepiece & Filter Accessory Kit
SAR 319
-14%
Alstar 2-Inch 50MM Telescope Eyepiece Extension Tube Adapter - Bundle with - 2" Telescope Moon Filter Kit
SAR 398
-17%
Alstar 2-Inch 50MM Telescope Eyepiece Extension Tube Adapter - Bundle with - Alignment 1.25" Laser Collimator 2" Adaptor
SAR 239
