New Apogee Binos
Posted 14 June 2004 - 09:04 AM
It looks like they are finally moving away from the straight thru viewing giant binos. Went right by 45 degree to 90 degrees.
Posted 14 June 2004 - 10:49 AM
Her only comment, "NOT another pair of binoculars."
More emphasis on the "not" than can be translated into text.
Posted 16 June 2004 - 06:53 PM
Posted 17 June 2004 - 07:19 AM
Posted 17 June 2004 - 07:45 AM
Posted 18 June 2004 - 03:25 AM
I've seen a few of these binoculars that have 45° and 90° eyepieces. What strikes me is that it might make more sense to buy one that accepts standard 1.25" eyepieces in helical focusers than to be tied to a manufacturer's limited range of options. The big ones in the 80-100mm range should effectively be paired wide-field refractors anyway, or as near as makes no difference.
Posted 18 June 2004 - 07:27 AM
Posted 18 June 2004 - 09:09 AM
The 100 mm Miyauchi binoculars do have barrels sligthly larger than 1.25". The Miyauchi eyepieces have o-rings that fit grooves cut into the barrel sides. This prevents the eyepieces from sliding out when the binoculars are elevated. Additionally the eyepiece construction is such that the field lens are very close to the barrel ends. This design is such so that focus can be reached. I have tried numerous conventional eyepieces thinking that if focus could be reached I could buy additional eyepieces to make pairs. Well most cannot even come close to coming to focus, just cannot focus in enough to get there. The old Meade Research Grade Series and the Orion Explorer orthos will work if you unscrew the lower barrel and drop the eyepieces in, but then you cannot fish them out easily.
One other consideration is the fact that these binoculars have built in stops at the bottom of the eyepiece receptacle barrel; so even if a wide field eyepiece would come to focus, it's field size would be governed by the smaller binocular field stop then it's own wide angle field stop.
I can't speak to the geometry in respect to reaching focus and field stops with the Oberwerk BT-100.
Posted 18 June 2004 - 09:39 AM
I have tried over a dozen different 1.25" eyepieces in the BT100. No problems reaching focus with any of them. The straight thru focuser holds eyepieces very snug and securely. I haven't found a one yet that would be able to slide out, even if the BT100 were pointed straight up.
Posted 18 June 2004 - 10:14 AM
Besides widefield visual, I intend to use it as a web cam guidescope as well, where I could easily find an alignment star through one eye-piece and the other eye-piece for webcam.
Posted 18 June 2004 - 12:12 PM
Posted 30 June 2004 - 06:12 AM
Posted 01 July 2004 - 12:55 AM
Posted 20 July 2004 - 04:48 AM
Up to now I have not received any notification e-mail from Kendrick Astro Instruments.