I'm looking for a used Meade 45 degree Erecting Prism for my ETX.
Please contact me at HP: 9619 2273 if you have one to offer.
Looking for a used Meade 45 degreee Erecting Prism
ooh.. so the image will be upright?? so is there any 90 degrees prism??? most probably i would like to get one after i bought a scope...VinSnr wrote:well, the angle of the diagonal is 45 degrees instead of the normal 90 degrees. And it gives a correct orientation image, instead of a left-right inverse image.IceAngel wrote:sorry to ask... wat do a 45 degree Erecting prism do??
Normally people use this for daytime observation.
*~Stars AND Clear Sky always~*
Leslie
*Owner of Antares 93mm Achromat Refractor*
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor*
-25.03.06-
Leslie
*Owner of Antares 93mm Achromat Refractor*
-10.11.03-
*Owner of Takahashi SKY 90 Fluorite Doublet Apochromat Refractor*
-25.03.06-
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weixing
- Super Moderator
- Posts: 4708
- Joined: Wed Oct 01, 2003 12:22 am
- Favourite scope: Vixen R200SS & Celestron 6" F5 Achro Refractor
- Location: (Tampines) Earth of Solar System in Orion Arm of Milky Way Galaxy in Local Group Galaxies Cluster
Hi,
If you use your scope for Astronomical purpose only (remember in space there is no up or down, right or left), don't use a prism diagonal... you will get more light loss than a mirror diagonal, unless you have other terrestrial "targets".. he he... ;P
If you use your scope for Astronomical purpose only (remember in space there is no up or down, right or left), don't use a prism diagonal... you will get more light loss than a mirror diagonal, unless you have other terrestrial "targets".. he he... ;P
Yang Weixing
"The universe is composed mainly of hydrogen and ignorance."
"The universe is composed mainly of hydrogen and ignorance."