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Name plate

25cm Newtonian with German Equotrial mount


Primary Diameter255mm(=10in)
Glass Thickness30mm(=1.2in)
Primary Focal Length1261mm(=49.6in)
Primary Suspension9-point floatation
Primary CoatingsStandard Al
Polished byHosoi Kougaku
Primary MaterialCorning #7740 Pyrex®
Secondary Minor-axis Diameter65mm(=2.5in)
Polished byHosoi Kougaku
Secondary CoatingsStandard Al
Secondary MaterialCorning #7740 Pyrex®
Finder Diameter60mm(=2.36in)
Finder LensAcromat
Finder Focal Legth300mm(=12in)
Magnificationx9.4

Mountings
This telescope is mounted by Dobsonian mount for first time.(See ``Tenmon Guide'' magazine June 1987)ĄŁ
Now This is mounted by Vixen's Sensor Equotrial mount.
Telescope is appeared in ``My Telescope'' page in ``Tenmon Guide'' magazine June 1997.(Dobsonian style at that time)
Title page of this issue(87k).
This is my report appeared in p158(scanned 108k,HTML)and p159(scanned 154k,HTML) in Japanese.
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Keiichi SAKAI k.sakai@bg.wakwak.com