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ebusinesstutor
sage
Reged: 07/01/09
Posts: 468
Loc: Nanaimo, BC, Canada
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I purchased a used Siebert 36mm Observatory eyepiece for low power wide field viewing.
But the first night I could get out with it the moon was nearly full so the kinds of objects I wanted it for were not really an option.
But I really wanted to look at SOMETHING with my new eyepiece, so I turned it on the moon.
With its low power 70 degree field of view, I could see the entire moon plus some space around it. The view was crystal clear and very silvery compared to my usual low power viewing of the moon at 24mm where the magnificatio makes it yellow. I was very pleased with the level of detail I could make out even at this low power.
Then some very fast moving clouds started moving in front of the moon. I had watched this before in other eyepieces and it looked neat, but with the Siebert's wide FOV I could see the clouds around it moving as well, lit up by the moon's light. It created a real movement effect, almost like the moon was racing through the clouds.
Very surreal - I'm glad I was able to experience such a wonderful show.
The only problem? The Siebert on the moon gives you so much light that the afterimage of the moon stays on your retina for a long time afterwards!
My variable polarizing filter is 1.25" so it wouldn't fit the 2" Siebert so I definitely have to get a 2" version for it.
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Garland Coulson
Orion XT8i Dob & Celestron 80 ED on a Vixen Porta Mount Mini
Baader Hyperion 8-24mm Click Zoom & Siebert Observatory 36mm
Siebert Black Knight Binoviewers
SkyWatcher Observing Chair
Celestron Skymaster 15x70mm binos
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star drop
Guilty as Charged
Reged: 02/02/08
Posts: 16395
Loc: Snow Plop, WNY
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Just make sure you only use one eye to view the moon without a filter. Keep the other eye moon free for navigation purposes.
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Ted
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bsim
Pooh-Bah
Reged: 01/04/08
Posts: 1060
Loc: New York City
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One trick is to illuminate your surroundings with a bright white light. Since you're observing the moon, dark adaptation isn't important and works against you. Your pupils will shrink and act as a natural filter. Another benefit is the ability to discern subtle shading on the moon because you're primarily using your cones.
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ebusinesstutor
sage
Reged: 07/01/09
Posts: 468
Loc: Nanaimo, BC, Canada
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Might buy that Zhumell filter deal at Telescopes.com. Only $149 for 4 filters including the variable polarizing, UHC, Oxygen III and the Deep Sky filter.
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Garland Coulson
Orion XT8i Dob & Celestron 80 ED on a Vixen Porta Mount Mini
Baader Hyperion 8-24mm Click Zoom & Siebert Observatory 36mm
Siebert Black Knight Binoviewers
SkyWatcher Observing Chair
Celestron Skymaster 15x70mm binos
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