Telescopes Canada will be closed for shipping and pick-up orders from Friday June 24th to Monday June 27th inclusive. Online orders will still be accepted as per normal and will be shipped Tuesday June 28th. Technical support will continue to be available.
NOTE: Some manufacturer back order lead times are longer than usual. Please ask us regarding specific products.
NOT suitable for visual solar observation. Only use for digital imaging with all high-end telescopes and extreme tele-lenses (lucky imaging technique). Suitable for highest magnifications and detailed imaging of individual sunspots AstroSolar PHOTO Film OD 3.8, mounted stress free in temperature compensated cell No astigmatism during winter observation or with temperature changes in summer Scope of Supply: BDSF (ASTF) Filter with apertures from 80 to 180mm (200 – 280mm not yet available) come with two sets of centering bolts in 38mm length. 3 bolts with 10mm diameter and 3 bolts with 20mm diameter, adjustable to the tube diameter of your telescope or dew cap. In addition three safety straps with glue-pads and three rubber plugs to cover the holes that are not used, mounting instructions.