I own a since (about) year 2005 a Baader/Zeiss binocular viewer (there is no catalog label on the case, I think it is a Marl IV, physically it is identical to Mark V). I have now a 1.25x glass corrector and would buy a 1.7x one. I see on a datasheet paper regarding Mark V that the corrector has a "factor 1.70x - can be installed before the Baader 90 degree prism diagonal for 2x". I did not know that the corrector could be installed in another way (where, how?). It means that my 1.25x, that is in fact mounted in-between the bino and the 90° diagonal, provides a 2x factor?
Thank you, best regards
Pietro Menga
The glasspath corrector works similar to a Barlow (although the optical details are different), and its magnification factor depends on the distance to the eyepiece (see e.g. https://www.baader-planetarium.com/en/blog/barlow-lenses-their-magnification-factors-and-working-distances/ ). So, if you place a GPC farther away, its magnification changes. They are designed for a specific distance, but work quite well in different distances, too.
For such applications, they can be mounted between two T-2-threads of many T-2-adapters (e.g. between two T-2-extension tubes), their collar is then clamped between the two parts.
Answer by: Baader Web Team (Admin) on Mar 18, 2024 11:06:00 AM
There may be a slight decrease in eye relief with the Hyperions when used with an extension, but it is barely noticeable - the eyepiece can still be used comfortably with glasses.
Answer by: Baader Web Team (Admin) on Mar 14, 2024 9:14:00 AM
A conventional Barlow lens will not do the job, you will need a telecentric system. Here the explanation https://www.baader-planetarium.com/en/blog/the-benefits-of-telecentric-systems/
We have no 1,5x telecentric. The only way to reach f/30 is step down the aperture. Please note that by all means you need an DERF filter in front of your telescope when attaching an Halpha filter! Or the telescope and the filter will be damaged servely.
Answer by: Baader Web Team (Admin) on Mar 7, 2024 10:20:00 AM
Hello, I have a Canon Rebel t7 with an EF 75-300mm f/4-5.6 III lens. I want to photograph the next solar eclipse, and was wondering if this filter will work. I live in south-eastern Michigan so I'll experience around a 90% eclipse. Thank you!
The filter is perfect for your needs! For buying our filters in the US please contact any dealer that sells our products or our distributor www.alpineastro.com.
Answer by: Baader Web Team (Admin) on Mar 5, 2024 4:33:00 PM