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    Johann von Hesse's Avatar
    Johann von Hesse is offline Bright Giants
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    Default Siebert Optics and Mt. Wilson Observatory



    It looks like Siebert Optics has jumped into a market not offered by the other eyepiece makers. Mount Wilson observatory is using a Siebert Optics 80mm 4" eyepiece in their 60" Cass. He has also made a large 70mm 4.3" eyepiece for the Carnegie Institution of Washington in 2010 for their 6.5 meter or ( 234") Magellan. He just finished up an order for a 90mm 4" to be used at the Weyerhaeuser Centralia Research Center in WA state. The pics show the 80mm eyepiece that is being used at the Mt. Wilson observatory in their 60" Cass. The other photo shows the new 90mm 4" that was made for the 24" Cass. at the Weyerhaeuser Centralia Research Center in WA state.
    Looks like Harry Sieberts innovatived eyepiece designs have came a long way. If his Observatory series eyepieces are good enough for the above stated Observatories, than I'll be looking at getting more of his 2" ones for my Siebert Optics 2" bino-viewer.
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    WWPierre's Avatar
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    Default

    My Siebert 30mm Ultra is my favorite EP. Harry Siebert is truly a talented optical engineer and technician. The surprising thing is that this impressive output is from what is essentially a "cottage" industry.
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5;
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    127 Mak/go-to EQ5; Burgess 127f8 refractor; Sky-Watcher 5" F/5 collapsible dob; 90mm Mak/motorized EQ2; Royal Astro 76/910-GEM; Meade 60x700 refractor/alt/az; Zhumell 25x100 Coin Ops; GalilleoScope. Celestron 8mm-24mm zoom; lots of fixed EPs,some good, some..not so much. A small collection of surveying instruments; a forest of tripods; Canon Rebel Xti. Confirmed gadget junkie; Custodian of the Magnetic North Pole (Send $1.00 to Pierre each time you use a compass.)
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