I bought two of these for solar eclipse / transit watching with my children and have seen the transit of mercury from a professional observatory in Georgia (Europe). When the oil ran out in the generators, the telescopes were closed down and I got the only transit picture from the national observatory of Abastumani! In Turkey, I was invited to view a £6000 hydrogen alpha telescope as the eclipse started - look! There are four sunspots!! No I said, looking at my £40 cardboard telescope, there are 6 sunspots - there were indeed - sometimes simplicity in the optical pathway leads to clearer images. Every year for over a decade I instructed my Science and Society class in the Kilkenny Baha'i Summer School to observe the sun with their own eyes - through this marvelous little wonder that is a small but very accurate lens / mirror and a projection telescope that folds to a pizza box. Its traveled the world and just captured a Mercury Transit 11/11/19. Brilliant.
The parts you mention should work fine to connect the UFC between the diagonal body and the 2" barrel. However, due to the threads, the end position of the UFC cannot be adjusted to your preferation, it might stop at an unfavourable position. We are thinking about developing an Camera-sided UFC adapter with S58 dovetail receptor. This would allow exact positioning to your needs. However it will take months before this product may come to the market.
Answer by: Baader Web Team (Admin) on Mar 31, 2020 9:55:00 AM
I have a Celestron 1100 Edge HD, will this Binoviewer work with that? And if so, what accessories will I need?
I also have a 70mm SolarMax III. Will I be able to use it with that? Again what accessories will I need?
Its hard to answer this question in general. Yes, the MaxBright II Binoviewer will work with an Celestron 11" EdgeHD. But there are many ways to adapt it. Most (if not all) customers will use a Binoviewer on a SC telescope in combination with a star diagonal. There are many different star diagonals available (or even our Baader FlipMirror II) and many possible ways to adapt it. We recommend that you look at our extensive 24-page manual, which illustrates many possible adaptation options and required adapters: https://www.baader-planetarium.com/en/downloads/dl/file/id/1614/product/4317/manual_baader_maxbrightr_ii_binoviewer.pdf
Unfortunately we don't sell the SolarMax III and don't know its thread sizes and most of all the available backfocus (but we strongly assume that it is very much too small). So we cant comment here on required accessories or functionality.
Answer by: Baader Web Team (Admin) on Apr 2, 2020 2:29:00 PM
You state that this filter can be used down to f/2.8. Since I already have one of these filters I wonder if it will be possible to use it with a RASA 8" f/2 that I just bought? What problem may occur and do I really need the ultrafast filter?
There will be significantly less signal arriving at the chip area. The exposure times will then be up to 10 times longer - but still so short that it can only be quantified by comparing the signal strength/exposure times with and without filters. A set of real high speed filters will be inevitable. And it is not just a matter of shifting wavelengths. The filter has to be constructed differently from the coating layer arrangement to avoid strong vignetting.
Answer by: Baader Web Team (Admin) on Apr 2, 2020 10:04:00 AM
Our company exists now for more than 50 years. In this time, more than 15.000 Baader Planetariums (the first patented product of our company) help all over the world to give students an understanding of astronomical correlations. In our own manufactory, more than 500 observatory domes have been produced and delivered turnkey-ready. Instruments and telescope accessories from "Baader" are known for their high qualities by many astronomers and universities. We consider it our duty and obligation, not only to sell telescopes, but an indivdually selected telescope system, that brings you a lifetime of joy.