DobSTUFF - A 17.5" Telescope

17.5" f4.8 Newtonian for Jim in Alameda, CA..:

This 17.5" f4.8 Newtonian is a remake for Jim in Alameda California. The telescope sits on an equatorial table that Jim uses as his "ground board". Jim asked that I leave the wood of the telescope "unfinished" so he can apply a custom color himself.

The telescope was completed in September 2009.

The scope is set up and ready to use. Notice the equatorial table.

Diameter of primary:	17.5" -- f4.8
Mirror cell:	18-point flotation
Length of struts	77.75"
Dimensions of rocker box:	13"x24.5"x26"
Weight of rocker box:	29.5#
Weight of "mirror box" w/mirror:	45# (48# with mirror cover)
Height of "mirror box":	12"
Inside diameter of OTA:	19.5"
Diameter of altitude Bearings:	23"

17front

The front ring with the traditional straight vane spider, Antares 2-speed 2" crayford focuser and filter holder.

A pair of 12Vdc fans help cool the 17.5" mirror. The mirror is held with an 18-point flotation mirror cell. The mirror is held onto the cell with silicone.

Here's a good view of the focuser, spider and filter-holder.

Detail of the rocker box. The altitude bearings are 23" in diameter.

I always include a custom made mirror cover with make-over and complete telescopes.

Here's the 17.5" in Jim's car. Easy transport.

For more information about your requirements:
--Dennis Steele
--Tel: 650-315-6578 (anytime)
--Email: densteele@dobstuff.com

More of my photos here.