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October 16, 2008Tele Vue 90 Degree 1.25″ Diagonal DSC-0125Item No. 704-31011 TeleVue 90 Degree 1-1/4″ Diagonal DSC-0125 features 96% enchanced mirror coating and solid body construction for accuracy and safety.
See Details: What Is the All-around Best Filter for Astronomy?Question: I am new to astronomy. What is the all-around best filter? Answer: Unfortunately, there is no all-around best filter for everyone. The optimum filter depends on your telescope / equipment, seeing conditions and objects wanting to view. There are three basic categories of celestial objects that can be enhanced with filters: lunar viewing, planetary viewing and deep sky objects (faint objects like nebulae). There is no filter that will do it all. For observing the moon, the primary requirement is to reduce the light intensity and enhance contrast for easy viewing. This can be done with a Neutral Density or Polarizing filter. For planetary observing, color filters bring out the most detail because planets are naturally colorful. Different colors bring out different details of the planet you are viewing. Always remember that you want to use the darkest filter your telescope will handle. Most small telescopes up to about 5″ in aperture use the light colors. The larger the telescope, the darker your filter can be. Color filters can sometimes be used in conjunction with a Neutral Density or Polarizing filter to aid in glare reduction. The more you use your filters the more you appreciate them and their affect.
Astrogizmos Astro Gazer Observatory PortableItem No. 785-10000 Full 360 degree Rotation Easily Portable Set-Up in 30 - 45 minutes View from Horizon to Zenith Hybrid Aluminum / PVC construction. Dome and lower cylinder covered by durable vinyl covering. All material is heat-sealed. No sewn through seams - no maintenance required. Eliminates stray light. Covering is opaque, blocking all light. Protects your night vision as well as stopping light from your equipment bothering others. Protects you and your equipment from the elements. Dome closes to provide rain / snow protection. Reduced dew formation. EZ Transport! Packs into 3 Carrying Bags. Great for use in sub-divisions not allowing permanent structures. No Tools Needed. No worries about leaving that wrench at home! Absolutely no tools needed for setup and disassembly. Frame connects together with Nylon quick connect fasteners. All weight bearing parts of the structure are aluminum or stainless steel. PVC used to provide lateral support only. Cover material held in place by a Velcro and grommet system Wide viewing slot opening, extending past zenith, while the dome still protects you from stray light and wind. Levelers an integral part of the construction allowing use on rough terrain. 10′ Diameter, 8′ 10″ High Constructed of durable 13oz Vinyl laminate fabric. No Sewn seams. Completely Light Blocking Material.
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