Hot topics for both consumers and webmarketers on WebmasterRadio.FM
Every Wednesday, 5PM Eastern.
Focal Reducers Tips
Focal Reducers
Good focal reducers allow the astronomer to get more bang for their buck. Focal reducers essentially create a dual focal ratio scope without sacrificing image quality.
Save Tip
Comments
Tip Rating
Focal Reducer Placement
The focal reducer placement is simple. This Meade focal reducer threads onto the rear cell of any Meade mirror-lens telescope or to other Schmidt-Cassegrain telescope brands (followed by the Off-Axis Guider or T-Adapter).
Save Tip
Comments
Tip Rating
Focal Reducer
A focal reducer reduces the telescope's focal ratio by a factor depending on the reducer itself. Simultaneously, the lens system helps to flatten the field, significantly improving edge-of-field corrections. For example, an f/6.3 focal reducer allows a reduction of photographic exposure times by about 50%, while producing an actual field diameter of 1.5" at the film plane.
Save Tip
Comments
Tip Rating
UV Focal Reducer
A UV focal reducer works exactly the same way any focal reducer works on a Schmidt-Cassegrain telescope. The additional UV coating on the lens protects the lens and reduces glare.
