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M27 - Dumbell Nebula

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HERSCHELIAN REFLECTOR

Started by starsareus, 02/26/2004 11:56PM
Posted 02/26/2004 11:56PM Opening Post
CURIOUS IF ANYONE HAS EXPERIMENTED WITH ONE OF THESE AFTER READING THE ARTICLE BY THOMAS DOBBINS IN SKY AND TELESCOPE MAGAZINE MARCH 2004 ISSUE. I AM INTERESTED IN BUILDING ONE AS I HAVE NEVER TRIED ONE PERSONALLY TO SEE ITS OPTICAL EXCELLENCE AND IT CALLS FOR A 6 INCH F22.5 SPHERICAL MIRROR AND A 4 INCH FLAT ACCORDING TO THE ARTICLE, DOES ANYONE KNOW WERE TO OBTAIN THESE TYPES OF MIRRORS? I HAVE TRIED SURPLUS SHED BUT THEY HAVE NO FLATS IN THE 4 INCH SIZE AND GOD KNOWS WERE A 6 F22.5 LIES. IF ANYONE CAN HELP I REALLY APPRECIATE THE TIME.

THANKS
ANDREW