Memory - DDR2 SDRAM - 2 GB - 667 MHz - CL5Primary InformationRAM Type : DRAM RAM Technology : DDR2 SDRAM RAM / Memory Speed : 667 MHz RAM Form Factor : N/A RAM CAS Latency ( tCL ) : CL 5 RAM / Storage Capacity : 2 GB UNSPSC CodeUNSPSC Code : 32101602
Our Hydrogen-Beta Filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas. It blocks everything but the hydrogen-beta light these faint nebulas emit, providing the contrast needed for viewing. By isolating the hydrogen-beta spectral line centered at 486.1 nm in a 12nm band-pass and blocking other wavelengths, it effectively blackens the background sky, allowing the faint nebula to become clearly defined. It increases contrast even under dark skies so you can visually capture these prized targets. Use with a moderate to large aperture telescope under clear, dark viewing conditions. Threaded to fit 1.25" and 2" eyepieces and diagonals.
When you need a portfolio book that really commands attention, Vista is a logical choice. Made of 1/8" opaque white acrylic panels with riveted aluminum hinges, this book is durable and beautiful. Compatible with all major brands of sheet protectors, mounting sheets and adhesive hinge strips. Nylon jackets (sold separately) are also available to protect your portfolio from light, dust and scratches. Expand the portfolio's capacity with standard screwpost extensions (sold separately). Lies flat when open.
