Hello Binoviewer Group!
One of my three binoviewers is a 2001 model of the Zeiss/Baader binoviewer, purchased from Astro-Physics. I use the TeleVue and Denkmeier II units also, also since each one offers some benefit over the other. I use the Z/B bino specifically on my AP 10" Mak-Cass. and it works really well with the generous amount of back focus that the MCT offers. of the three bino's, I feel that the Zeiss/Baader unit is optically and mechanically superior to the others. For this reason, I would like to use this binoviewer on my 20 in. f/4.3 Starmaster Dobsonian, also. The Z/B bino doesn't come to focus on the Starmaster because the telescope's back focus is too short. My TeleVue and Denkmeier II bino's work well because of their long forwardly extended nose pieces with an amplifier/corrector lens that intercepts to focus of the Dob. The Zeiss/Baader binoviewer doesn't have this forwardly extended lens and because of this can't catch the short focus of the Dob. The Z/B bino really could use such an accessory such as this extended lens mounted about 100mm forward of its prism so that it will come to focus. Does anyone know of an existing lens assembly that can be mounted in front of the Zeiss/Baader bino so that it can be used on a Dobsonian such as my 20" f/4.25 Starmaster?
Thank you, and Happy Holidays To All!
Peter Natscher
Monterey, California
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One of my three binoviewers is a 2001 model of the Zeiss/Baader binoviewer, purchased from Astro-Physics. I use the TeleVue and Denkmeier II units also, also since each one offers some benefit over the other. I use the Z/B bino specifically on my AP 10" Mak-Cass. and it works really well with the generous amount of back focus that the MCT offers. of the three bino's, I feel that the Zeiss/Baader unit is optically and mechanically superior to the others. For this reason, I would like to use this binoviewer on my 20 in. f/4.3 Starmaster Dobsonian, also. The Z/B bino doesn't come to focus on the Starmaster because the telescope's back focus is too short. My TeleVue and Denkmeier II bino's work well because of their long forwardly extended nose pieces with an amplifier/corrector lens that intercepts to focus of the Dob. The Zeiss/Baader binoviewer doesn't have this forwardly extended lens and because of this can't catch the short focus of the Dob. The Z/B bino really could use such an accessory such as this extended lens mounted about 100mm forward of its prism so that it will come to focus. Does anyone know of an existing lens assembly that can be mounted in front of the Zeiss/Baader bino so that it can be used on a Dobsonian such as my 20" f/4.25 Starmaster?
Thank you, and Happy Holidays To All!
Peter Natscher
Monterey, California
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